Post on 03-Apr-2023
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CRUISE. REPORTHUDSON' 91-020
Atlantic GeoscienceCentre
For Citation:
"SALEM, Hilmi S. and STAFF OF SCIENTISTS AND ENGINEERS, 1991. Multidisciplinary research cruise on the
continental margin of the offshore area of south-eastern Canada - the Grand Banks (down to depths of 6 km
≈ 20,000 ft), including geophysical, petrophysical, geological, geochemical, geotechnical, and pathymetric
studies (sonar scanning, dredging, coring, laboratory measurements, etc.). Atlantic Geoscience Centre
[Environmental Marine Subdivision (environmental, engineering, geology, geotechnology, climatology, and
palaeoclimate studies’), Basin Analysis Subdivision (hydrocarbons, petrophysics, sedimentology, stratigraphy,
and geochemistry), Regional Reconnaissance Studies Subdivision (geophysics and geodynamics), and Program
Support Subdivision (cruise equipments and facilities)], Dalhousie University, Geological Survey of Canada,
Ocean Drilling Program (ODP); Cruise Report: Hudson (CR) 91-020, Bedford Institute of Oceanography,
Dartmouth, Nova Scotia, Canada, 173 pp. (Technical Expedition Report)." URL: http://wmsmir.cits.rncan.gc.ca/
index.html/pub/geott/MarineGeoscienceData/Seismic_Reflection_Scanned/Stations/Expedition%
20Reports/91020_expedition_report.pdf
Dates:
Master:
CRUISE REPORT HUDSON 91-02011 June 1991 - 4 July 1991, BIO to St Johns
Captain L.A. Strum
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Senior Scientist: D.J.W. Piper, A.G.C.
SecondScientist: P.J. Mudie, A.G.C.
Responsibleagency: Atlantic GeoscienceCentre
CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . .Cruise summaryScientific highlightsScientific staffSummaryof technical problems and recommendations
Log of operations . . . . .Daily summaryDetailed narrative
Details of operationsand preliminary results . . . . . . . .Navigation
Routine navigationComputer networking and navigationShips clock
CoringAGC Long coring facilityGravity coring and box coringCHATS/PALCore processingSummaryof results of coringEstimatesof core top lossesfrom physical propertiesMicropaleontologyGeochemistry
Seismic reflection profilingMethodsSE881 Digital Seismic Data LoggerSummaryof results
Lance10tpiezometric studiesMethod
. Summaryof resultsDredgingDebris flows of the Albatross corridorThermal characterof St Pierre Slope sediments
Data tables and plots . . . . . . . . . .Summaryresults of thermal probe stationsSummaryLancelot resultsSummarycore logsShipboardgeochemistrydataSummaryof shipboarddata
Table 7. Composite sample listTable 8. Core samples
33567991020202020212222242427303436394747474950505455606476
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Table 9. Grab samplesTable 10. Water samplesTable II. Dredge samplesTable 12. Box core samplesTable 13. Start/endof paper recordsTable 14. Start/endof tapes
Summary track plots
Tables in text1. SUmmaryof CHATS and PAL on each core 252. Estimatesof core-top loss from physical propertiesdata 353. Estimatesof core-top loss from geochemicaldata 464. Summary of Lancelot deployments 525. Summary of thermal probe deployments 726. Summary of other data from thermal probe stations 77
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INTRODUCTION
CRUISE SUMMARY
This was a multidisciplinary earth sciencecruise on the continental
margin off southeasternCanada, supportingcomponentsof the GSC Mapping,
Energy and Environment programs. Detailed studieswere carried out on a debris
flow south of the Albatross well site (following up reconnaissancework in
1988) and around the epicentreof the 1929 Grand Banks earthquake(following
up the 1990 detailedsidescansurvey). More reconnaisancelevel studieswere
carried out on the Grand Banks margin. This was the first AGC Hudson cruise to
experiencethe new overtime restrictions.
Scientific objectives of the cruise were:
1. To carry out regional mapping of the deep water margin off the Grand Banks.
2. To assessthe importanceof gas hydrateson the continentalslope and in
Flemish Pass, and the potential loss of gas through the upper slope.
3. To obtain core-top samples for dinoflagellatedistributions and transfer
functions.
4. To understandthe sedimentologicalbehaviourof the Albatross debris flow.
5. To make measurementsof in-situ pore pressurein various deep water
sediments.
6. To dredge volcanic rock samplesfrom the Fogo Seamounts.
7. To obtain stratigraphiccores on outer Flemish Cap and on the Grand Banks
margin.
8. To carry out seismic surveys to support potential ODP sites on the Fogo
Seamounts.
9. To test modifications to the AGC long coring system.
10. To calibrate and test the fluid backedboomer.
Cruise results keyed to the above objectives
(numbers keyed to objectives above)
1. Substantialnew bathymetric and 3.5 kHz coverageon deep water margin off
the Grand Banks; some seismic lines, particularly in Titanic area, on St
Pierre slope and near the Narwhal well. Considerablenew groundtruth for
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previous acousticdata on St Pierre Slope and near the Titanic wreck. Work
hamperedby bad weather.
2. Significant amounts of methanedo not appear to be leaking from the upper
slope. Gas sampledon St Pierre Slope; thermal probe measurementswill be used
to assesshydrate stability. Proposedshallow hydrates in Flemish Pass shown
to be sand.
3. Six box cores, 5 van Veen grabs and more than 20 poorer quality gravity
cores obtainedfor dinoflagellatedistribution data base.
4. 7 piston cores (number reducedby overtime restrictions) and substantial
seismic coveragesshows that Albatross debris flow consistsof several flows
which pass downslope into erodedterrain, probably from the related turbidity
current.
5. Lancelot probe highly successful.Demonstratedupward flow of fluid near
pockmark site on St Pierre Slope. Hard bottom preventedLancelot penetration
at Titanic site; but core samplesobtainedto study consolidationhistory.
6. Volcaniclasticbrecciawith relatively fresh clasts of trachyte, rhyolite
and basalt dredgedfrom northwesternFogo Seamount.
7. Stratigraphiccores obtainedon slide north of the Titanic and east of
Flemish Cap. Weather preventedtaking core·on SWGrandBanks margin. This part
of program cut back due to overtime restrictions.
8. Seismic on potential ODP sites not obtainedbecauseof bad weather. Dredged
?Cretaceoussandstonefrom ridge south of Flemish Cap. Dredgedvolcaniclastic
breccia from one Fogo Seamount.
9. CHATS and PAL logging systems for corer motion highly successful.Some
tweaking of orifices and other testing carried out on piston corer.
10. Fluid backedboomer calibratedand testedwith loose spring.
Data collected included:
1200 kmof 40 cu inch sleeve gun seismics
·500 kID Huntec DTS seismics
3.5 kHz and 12 kHz profiles throughoutentire cruise.
12 piston cores, most with CHATS and PAL logging
7 box cores (one failed)
5 dredgehauls (3 successful)
4
3 camerastations
9 heat flow/conductivity stations (MUN heat flow probe)
6 Lancelot deploymentsfor pore pressureand consolidation
23 gravity cores and 9 van Veen grabs (of which 60% successful)
SCIENTIFIC HIGHLIGHTS
Multiple debris flows were distinguishedin the Albatross debris flow
corridor; downslope thesepassedinto zones of erodedseabed.
The Lancelot piezometricdevice detecteda zone of excesspore pressure
and probably upward flow of fluid associatedwith pockmarks on the St Pierre
Slope
Sedimentswithin one metre of the seabednear the Titanic wreck are
highly overconsolidated,probably as a result of non-depositionand
diagenesis.
Nearsurfaceoverconsolidationwas measuredat severalbox core sites on
the continentalslope and could be visually related to biologic activity
The detailedbehaviourof the wire, core head and piston during coring
was monitored at 1/100 secondsampling rate.
No evidencewas found for significant releaseof gas from hydrateson the
upper slope.
Acoustic bright spots in Flemish Passpreviously interpretedas due to
gas hydratesappear to result from coarsenear-surfacesands.
A recent turbidite from Titanic valley contains resedimentedorganic
fragments including beetlesthat may provide information on late Pleistocene
refugia on the outer Grand Banks.
Volcaniclasticbrecciacontaining trachyte, basaltand rhyolite was
recoveredfrom the Fogo Seamounts.
Si02 distribution, magnetic susceptibilityand shearstrengthwere used
to estimatecore top loss in piston cores as ranging from 0.5 to 2 m.
Surficial red mud on the central ScotianRise may representdepositsof
the 1929 Grand Banks turbidity current transportedas a nepheloidlayer.
Eight successfulheat flow and conductivity measurementswere made near
the epicentreof the 1929 Grand Banks earthquake.
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SCIENTIFIC STAFF
David Piper
PetaMudie
Ray Cranston
Harold Christian
Lubomir Jansa
Martin Morrison
JacqueBerry
Dave Heffler
Bill MacKinnon
Iris Hardy
Bob Murphy
Roy Sparkes
JesseNielsen
Don Locke
Marty Uyesugi
Bob Fitzgerald
Richard Morykot
Hilmi Salem
Dave Pass
Andy McThenia
Michelle Lund
AGC
AGC
AGC
AGC
AGC
MUN
Dal
AGC
AGC
AGC
AGC
AGC
AGC
AGC
Seastar
AGC
AGC
AGC
AGC
U. Virginia
McGill U.
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SUMMARY OF TECHNICAL PROBLEMS AND RECOMMENDED IMPROVEMENTS
The cruise program was modified before sailing by removing some piston
coring that could be done only with substantialovertime for the deck crew.
Otherwise, with the cooperationof the Captain, we were able to work around
the new overtime restrictions. This was possibleonly becauseour program was
multidisciplinary and thereforerelatively flexible.
This cruise was successfulbecauseof the customarywilling support and
cooperationof Capt. Strum and the ship's officers and crew. In particular,
precisestationkeeping and the hard work of the deck crew contributedgreatly
to the scientific program. As usual, the EngineeringDept. were willing to
help with equipment repair-andmodification. Staff were impressedby the food
and the cheerful stewardservice.
Ships or BIG problems
- The air conditioner in the Computer room leaks when there is a port list.
The air conditioning did not work efficiently at the beginning of the cruise.
This may have contributedto the collapseof the colour video displays.*
- Crutch for Grove crane should be movedaft so that Pengo wire is well clear
of core head.
- Navigation display in the GP lab is small and hard to read. There are
insufficient monitors on board.**
- Senior scientist'scabin. Note comments madein 1990: lack of filing
cabinet, dangerousbookcase,size of bookcases,obstructingfixed table.*
- It would give more flexibility in assigningcabins if ALL staff cabins on
the upper deck could be used either as male or as female cabins (particularly
since one of the two currently designatedas female is terrible).
- The steps from the GP lab to the geochemlab are worn and slippery, and
dangerouswhen carrying cores down to the cold room.
- When the A-frame is turned on, the water pump for compressorsturns off.
- Drawers in the GP lab are in terrible shapeand need refurbishing.
- Deckheadin port forward area of GP lab leaks a fine white dust, apparently
insulation, which is deleteriousto computersand other lab equipmentand may
causegeochemicalcontamination.
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AGC problems
- Log books should contain sweep chart for 3.5 kHz profiler on half second
sweep and instructions on reprogrammingannotator. The headingmarked "speed"
should read "log".*
Dredging block needs a load pin.
Various problems,withSE880 and piston coring describedin separatereports
by Heffler and MacKinnon.
- The number and reliability of shipboardPC's is inadequate:particularly, a
laser printer is essential, ideally linked to the network.
- The computerprovided for FINS would not run the .software (although it would
run on other computers). In the new overtime regime, FINS must be working
before corning to sea.
- AGC should considercarefully whether to continue to be involved at all in
ISAH, or whether to go the GPS - PC route that Heffler startedto develop,
which appearsmuch more rapid and robust.
* - suggestionmade in 1990; ** - suggestionmade in 1988 and 1990.
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DAILY SUMMARYDays162 Tu11
163 W12
164 Th13
165 F14166 Sa15
167 Su16
168 M 17
169 Tu18170 W 19
171 Th 20
172 F21
173 Sa 22
174 Su 23175 M 24
176 Tu 25177 W 26178 Th 27
179 Fr 28
180 Sa 29
181 Su 30
182 Mo 1
183 Tu 2
184 W 3
185 Th4
LOG OF OPERATIONS
ProgramDepart BIO. Huntec calibration in Bedford Basin. Huntec deepwater boomer test in Emerald Basin.Steam to shelf break. Gravity core 001 (wash out), Van Veen 002on upper slope on Albatross transect. Piston core 003 west ofAlbatross area, camerastations004, 005 (pinger failure).Night seismic acrossAlbatross debris flow systemat 3000 m.Box core 006, piston core 007 on levee E of debris flow. Nightseismic down the easternvalley of the Albatross system.Piston core 008 in easternvalley. Medical evacuation.Night seismic down end of easternvalley. Piston core 009 inerosionalzone beyond downslope limit of recent debris flows.Van Veen 010. Night seismic zig-zag acrosseasternvalley.Gravity core 011 on levee, piston core 012 on "snout". Nightseismic zig-zag up easternvalley.Piston core 013 on levee, 014 on debris flow at 3500 m ineasternvalley. Camera station 015 on debris flow.Steam to St Pierre Slope.Night seismic in SAR zone 1. 3 heat flow probe stations.Transectfor gas on upper slope (020-026). Night seismic.Lance10t (027), box core (028) and piston core (029) onundisturbedhigh .at 1400 m in SAR zone 1. Then seismic.Heat flow probe (030-032). Lance10t in pockmarkedzone (033).Transectfor gas on upper slope (034-038). Night seismic.Heat flow probe (039) at site 028. Lance10t (041) and pistoncore (040) in debris flow, gravity core (042) in adjacent .channel. Lance10t on upper slope (043). Night seismic.Box core (044). Heat flow probe (045-047). Lance10t (048).Narwhal transect. Box core 049 at Narwhal site. Upper slopegravity cores and Van Veen grabs (050-055). Seismic on upperslope and around Narwhal site.Central Grand Banks margin. No work due to bad weatherand SAR.Survey Fogo Seamount29. Dredge 056, no recovery.Bathy survey SE of Fogo Seamount29. Dredges 057, 058 at FogoSeamount29.Piston core 059 on slide north of Titanic site. Gravity cores060, 061 near Titanic. Visit from Keldysh. Night seismic.Piston core 062, Lance10t 063 near Titanic site, gravity cores064, 065 in vicinity. Night seismic.Grab 067, 068, box core 069 off SW Grand Banks. Steam toFlemish Cap.Dredges (070, 071) and Van Veen (072- wash out) at Srivastavasite. Van Veen wash out at 400 m (073). Then steamedto outerFlemish Pass, ran seismics.Outer Flemish Cap. Piston core 074, box cores 075, 076; vanVeens 077, 078. Steamedto Flemish Pass.Seismic, then piston core 079 at gas hydrate site. Steam toDowning Basin.Fluid backedboomer test (failed). Steam to St Johns.
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test seismic line at about 2300 Z. Ran
output, probably becauseof loose
at Wend ofknots from62 55 W62 48 W62 45 W
Rather low power
DETAILED NARRATIVETUESDAY 11 JUNE JD 162Fire and boat drill immediately on leaving BIOSteamedto deepestpart of Bedford Basin. Drift and deploy Huntec DTS system.Carry out calibration tests on fluid backedboomer. Unusual power loss ondeepesttest (later judged to be becausebolt holding spring in place hadworked loose). Then waited for launch with replacementseamanand put Simpkinashore. DepartedBedford Basin at 1800 Z.Steamedat full speedto Emerald Basin. (Deck crew occupiedsecuringstoresand gear).Slow and deployedHuntecHuntec seismic line at 4A: 43 53.1Nto B: 43 53.1 Nto C: 43 ,52.5 NWind abeam, some sea.spring.
WEDNESDAY 12 JUNE JD 163RecoveredHuntec at 0100Z.Steamedat full speedtoD: 42 52 N 62 48.5 WThen ran south on echosounderto 430 mto take gravity core 001. Some delaybecausemeter not connectedto block.Core washedout 5 emplug of sediment. Only silt recoveredon outside ofbarrel. AttemptedVan Veen grab 002 near same site. Good recovery, but no gas.During these stations, BIONAV failed and had to be restarted.Sample positionsbasedon Trimble GPS.At 0720Z, steamedwith 3.5 kHz and 12 kHz towards 42 07 N 63 05Wand then ontowards core site at 42 50 N 63 21W. In order to reduce problems with spraywhile rigging, ran somewhatnorth of original site and chose new site on basisof 3.5 kHz at:41 55.5 63 22.57Core 003, 50 ft. Heffler logging calibration poor, so no detailed record.Excellent !WC with new heavier trigger weight corer. 33 ft penetration,about10 m イ・」ッセ・イケL with stiff mud and cobble in lower part. Considerableproblemswith getting out of barrel.Then attemptedcamerastation 004 at core site. Cameraworking on deck, but onbottom the pinger did not switch off when on the bottom. Put on bottom 4times, then recovered.Tried again at 1715 ADT, after Locke checkedcamerafor problems. Wind got upand had problems holding station. Experiencedsame problems with pinger: puton bottom only twice. On recovery, compasstrip lost (swinging violently andline parted).Then steamedto 3mi W of core site and at about 2130 ADT deployed40 cu insleeveairgun, SE and NSRF eels. (Huntec not usedbecause(1) not ready and(2) weathernot very good).
to62 27.0 W
in time to arrive on core station 006 at 0745.
THURSDAY 13 JUNE JD 164Ran seismic line at 5 knotspoint E 42 07.0 NRecoveredgear at E
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Core 006 42 10.21 N 62 35.55 Wbox core: about 30 cm recovery. Overconso1idatedolive-grey mud. Successfulgeochem, geotechsampling.Then run to the west towards:42 09.74 62 37.8Core 007. 50 ft piston core. Heffler split piston did not split, and logs didnot trip correctly. 28 ft penetrationbut only 5m recovery, with somedisturbancein top section.Ran 3.5 line through core site to east to cross major valley while core wasbeing dismantled. This line with the wind, which is increasingto 35 knots.Then returnedto easternvalley of debris flow and deployedairgun and eels at1730 ADT to run the following lines:F 42 11'N 62 39 Wto 42 5.2'N 62 36.1'W
FRIDAY JUNE 14th JD 165continue seismic linesG 42 OO'N 62 32 WH 41 50'N 62 21'WI 41 40'N 62 13'WJ 41 27'N 62 OO'Wthen turned and ran back to core site at41 28.3 N 62 00.95 WCore 008, 50 ft piston core on debris flow. TWC recoveredmostly sand, PCrecoveredsand over stiff mud. Mud in core catcherhad shearstrengthof 16kPa. Corer snappedoff at top of bottom barrel, Heffler lower half of splitpiston lost.Weather throughout the late night and day poor: winds of 35 kn.At 1400, steamedtowards Halifax for medical evacuation.Returnedto core siteby 2200 ADT.
SATURDAY JUNE 15th JD 166Three miles north of core site, deployedseismic gear (airgun, SE and NSRFeels)Towed seismic gear at 5 knots through the' following points:41 13.5 N 61 51 W41 00 N 61 41.3 W40 45 N 61 34.5 Wthen turned towards40 45 N 62 00 WNSRF eel digitally recordedRecoveredgear and ran to core site.40 ft piston core 00941 00.93 N 61 42.95 Wwhen core completed, steamedat 10 knots to point LL 41 01.0 N 61 37.0 WM 41 05.0 N 61 38.0 Wto Van Veen grab site at 41 04.2 N 61 44.3 Wtook Van Veen grab 010.
SUNDAY JUNE 16th JD167Steamedto 2 mi before start of seismic line, deployedairgun, SE and NSRF
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eels and ran the following seismic lines at 5 knots.Excellent weather. NSRF and SE 100 ft digitally recorded.A: 41 14.2 61 45.3B: 41 11.2 61 55.0C: 41 12.5 61 55.8D: 41 14.5 61 50.2more seismic lines were then designatedbroke off seismic to return to core site near point D at 0745 ADT.Took gravity core 011 using half inch wire at:41 16.76 N 61 51.40 WThen took 40 ft piston core 012 at:41 l6.42N 61 48.63 WWhen completed, steamedto point 2 miles from L and deployed seismic gearincluding Huntec DTS. Ran the following lines at 5 knots. Excellent weather.NSRF, SE 100 ft and SE 25 ft digitally recorded.L 41 29.1 61 58.0M 41 28.3 62 00.945
MONDAY JUNE 17th, JD 168continuedseismic under excellentweatherconditionsN 41 27.0 62 06.3o 41 36.0 62 05.3P 41 32.2 62 11.0Q 41 32.65 62 15.04R 41 36.6 62 15.5S 41 41.1 62 10.0T 41 47.6 62 16.1U 41 43.4 62 23.5V 41 53.2 62 18.0W 41 48.5 62 30.0continuedon a short distancebeyond W, then recoveredgear at 0700 ADT.Core 13, 50 ft piston core at:41 49.63 62 19.91 approx.then core 14, 40 ft piston core at:41 47.29 62 21.01 approx.then camerastation 015 at the same site as core 14. In fact, stationwasabout 1 mi Wof core 14. Took 8 shots, then pinger failed. Shackleweight was17 cm long, 12 cmwide.
TUESDAY JUNE 18th, JD 169Steameddirectly to St Pierre Slope, running 12 kHz and 3.5 kHz. Engine testsat 1030 ADT. Beautiful weather.
WEDNESDAY JUNE 19th, JD 170Deployed seismic gear (Huntec, airgun, SE and NSRF eels) atA: 44 55.0 55 49.6and ran the following lines at 5 knots. Airgun recordedon ORE system.B: 44 50.57 55 45.0C: 44 49.40 55 42.4D: 44 45.32 55 37.34E: 44 43.72 55 35.82F: 44 42.0 55 34.75
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G: 44 43.0 55 32..0make a slow turn to stbd and resume line atH: 44 42.45 55 32.45I: 44 45.17 55 35.30J: 44 42.0 55 33.65K: 44 39.5 55 33.07L: 44 38.0 55 33.48M: 44 42.0 55 40.0broke off seismic and ran to first thermal probe station:Before the first station only, the probe was held 30 m off the seafloor for 10minutes. It was then lowered into the bottom and remainedthere for 20minutes. It was then brought up and lowered again immediately into the bottom,so that there was a total of three lowerings at each station. It was towedbetweenstationsat an appropriatespeed (3 knots).TPl-2 44 50.30 55 44.72 approx 525 mTPl-3 44 49.52 55 42.20 approx 600 mWhen TPl-3 was completed, recovered.Redeployedafter lunch at the following two stationsTPl-4 44 47.40 55 39.65 approx 690 mTPl-5 44 46.75 55 38.96 approx 800 mran out of battery at beginning of TPl-5, which was not completed.Recoveredthermal probe. Data quality good.Take a gravity core (hydrographicwire) at point N:N: 44 45.05 55 38.12Took a seriesof gravity cores 021 to 026 along line B to A at sites startingat about 500m, with each site approximately50 m shallower.B: 44 50.57 55 45.0A: 44 55.05549.6
THURSDAY JUNE 20th, JD 171Weather continuing good.After end of coring profile, ran to W to streamseismic gear. Then ran thefollowing seismic lines with Huntec, 40 cu in airgun, SE and NSRF eels:W 44 52.0 55 51.0V 44 51.695 55 46.125U 44 50.0 55 39.5T 44 47.5 55 44.0S 44 47.0 55 42.0R 44 46.65 55 36.0made a slow turn to stbd and come onto lineQ 44 46.4 55 35.5P 44 45.85 55 37.23o 44 45.6 55 37.84N 44 45.05 55 38.12M 44 42.0 55 40.0AA 44 39.0 55 45.0BB 44 35.5 55 41.5recoveredgear at 0700 in order to be at Lancelot site by 0800at 44 41.0 55 31.3 1325 mStn 027: Lancelot. Lance10twas left in the bottom for an hour. Excellentdata.then at the same site, took a box'core (core 028)
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then at the same site, took a 50 ft piston core (core 029)When piston core completed, ran to one mile north of point A and deployedHuntec, airgun, SE and NSRF eels for the following seismic lines at 5 knots.For line A-B and beginning of B-C, Huntec digitally recorded: thereaftertheairguns were digitally recorded.A 44 44.0 55 31.3B 44 41.0 55 31.3C 44 31.0 55 31.3D 44 33.0 55 48.0E 44 35.0 5548.0F 44 35.0 55 30.0
FRIDAY JUNE 21st, JD 172continuedseismic profilingturn to stbd to come back through F and continue to GG 44 40.0 55 40.0H 44 48.25 55 50.01I 44 48.70 55 44.45J 44 48.90 55 35.90made a slow turn to port to come to point KK 44 49.0 55 36.68KK 44 46.695 55 37.103L 44 45.0 55 37.44made a turn at L to come to point MM 44 46.51 55 36.0N 44 46.62 55 38.0Broke off seismic in order to arrive at site TP2-5 by 0800. The thermal probewas used at this site and at sites TP2-6 and TP2-7, with slow towing inbetweensites.TP2-5 44 46.75 55 38.96TP2-6 44 46.68 55 37.84TP2-7 44 45.60 55 37.84On site TP2-7, too much wire was put out and the probe got twisted, breakingthe main electical connector. Probe recoveredbefore TP2-7 was completed.Steamedto station LAN-3 for Lancelot deployment, via points U and VU 44 46.0 55 37.42V 44 47.0 55 37.28LAN-3 44 47.45 55 41.73 (exact site confirmed by sounder)Lancelot stayed in the bottom for one hour; two drags at time of watch change.Only partially useabledata.When Lancelot completed, steamedto start of gravity core line atX 44 50.19 55 58.69ran line from X through Y and on upslopeY 44 51.9 55 58.7
) Five gravity cores taken, at approximately500m, 450 m,at point Y (420 m), at370 mand at 320 m (samples34-38). Water bottle also taken at point Y (sample36).
SATURDAY JUNE 22nd, JD 173When coring completed, steamedto a point 2 mi Wof A, deployed seismic gear(Huntec, airgun, SE and NSRF eels) and ran the following lines at 5 knots:A 44 50.68 55 54.20
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B 44 50.7 55 50.0C 44 51.0 55 43.0D 44 51.0 55 42.0E 44 49.3 55 40.4F 44 47.32 55 43.3G 44 44.90 55 45.91make a slow turn to port and come on to HH 44 44.2 55 45.09S 44 46.93 55 38.0T 44 46.835 55 36.0make a slow turn to come to point QQ 44 46.40 55 36.0R 44 46.52 55 38.0make a slow turn to come to point 0o 44 46.82 55 38.0P 44 46.715 55 36.0then turn to come to point II 44 46.0 55 37.6J 44 47.0 55 37.47make a slow turn to come to point KK 44 47.0 55 36.9L 44 46.0 55 37.08M 44 45.0 55 35.0N 44 42.0 55 29.0broke off line shortly after M to come to thermal probe stationby 0800thermal probe station TP4-1 (039)TP4-1 44 41.00 55 31.51 (approx 1300 m)50 ft piston core (040), followed by Lance10t deployment (041), both at thesame site.
44 45.05 55 38.12 (approx 1000 m)In order to trigger the loggers on the piston corer, the corer was lowered tonear the bottom, then brought up 100 m, then finally put in the bottom.Logging successful.Then moved 5 cablesNW to take gravity core 042 in channel.Then steamedat full speedto secondLance10t deploymentatY 44 51.9 55 58.7 . (approx 420 m)When Lance10t recovered, came 1.5 mi W of Lance10t site and streamedHuntec,airgun, SE and NSRF eels, and ran at 5 knots back through the Lance10t siteand then to .A 44 52.0 55 50.0B 44 46.0 55 50.0C 44 42.5 55 51.5D 44 44.0 55 44.5then make slow turn onto EE 44 43.6 55 44.5F 44 40.0 55 47.5G 44 36.0 55 47.0H 44 30.0 55 47.0I 44 30.0 55 30.0Huntec turned off betweenH and I becausevery difficult to track overhyperbolic bottom.Brought in gear at I and ran to box core site 044 at 0800
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(approx 1635 m)(approx 1645 m)
speedtoand continue throughto
044 44 31.86 55 38.83When box core secured, run at fullA 44 35.4 55 45.0TP5-2 44 36.845 55 43.125B 44 37.5 55 42.0turn and return to Thermal Probe station TP5-l045 TP5-l 44 37.325 55 42.725 (approx 1635 m., exact positionto be confirmed by sounder)continue with thermal probe stationsat046 TP5-2 44 36.845 55 43.125047 TP5-3 44 36.225 55 43.925(both finally picked by sounder).Recoveredthermal probe at 1630. Only 045 had good data.Then steamedat full speedto Lance10t stationLAN-5048 LAN-5 44 29.060 55 52.795 (approx. 2440 m)Lance10t somewhatdamagedin debris flow. Sample of sedimentadhering to probewas taken.
MONDAY 24th JUNE, JD 175When Lance10t secured, steamedat full speedtowards point A. 2 miles before Aslowed to deploy Huntec, airgun, SE and NSRF eels. Then ran seismic line A toB to C at 5 knots.A 44 38.2 54 39.0B 44 21.5 53 50.0C 44 17.22 53 41.4then retrieved gear and came to a box core station 049 at or near049 44 18.36 53 44.29When box core completed, steamedat full speedtowards
44 30.0 53 42.5when the 500 mcontour was reached, stoppedas advisedby GP lab and took agravity core (050). Continuedalong the line taking gravity cores atapproximately50 m depth intervals as advisedby GP lab. Last two samples(054, 055) were Van Veen grabs.When gravity coring completed, steamedto a point A, deployed seismic gear(Huntec, airgun, SE and NSRF eels) and run the following lines at 5 knotsA 44 26.58 53 37.50B 44 27.43 53 42.44C 44 28.64 53 49.10D 44 21.02 53 41.22E 44 15.0 53 46.82F 44 16.73 53 50.35Brought in seismic gear betweeenE and F at 1045 ADT.
TUESDAY 25th JUNE, JD 176When gear retrieved, steamedat full speedto X.GP lab maintained3.5 kHz and 12 kHz watch.X 43 16.7 52 06.8During the night the wind got up to 45-50 knots, and remainedat 35-40 knotsall day Tuesdayand until Wednesdaynoon.No work possiblenear X, so decided to steam towards northwesternFogoSeamount.At 1400 ADT, broke off to SAR (yacht Chapter II, on westernvalley of
16
LaurentianFan). SAR later called off, returnedto working zone about 0200 ADTWednesday.
51 57.851 47.0
WEDNESDAY 26th JUNE, JD 177SurveyednorthwesternFogo Seamountfor dredging sites. By afternoon, weatherhad moderated.Attempted dredge site 056 at
42 10.042 52 53.444pulling dredge off to SEGot severalgood tugs on dredge and pinger record suggestedrock outcrop. Weaklink broke and no sample other than foram ooze from outside of dredge wasrecovered.Evening and overnight: weathermoderatedfurther. Ran the following lines at12 knots to look for further dredging sites. The GP lab maintainedthe 12 kHzand 3.5 kHz sounders.to A 41 56.7B 41 54.7
continuedto
51 55.752 00.052 57.2
knots and52 58.4653 01.4353 03.66
at52 58.67
THURSDAY 27th JUNE, JD 178continue toC 41 48.3D 42 09.0E 42 10.0then reducedspeedto 5F 42 12.94G 42 17.55H 42 09.925Dredge site 057 started
42 13.24Dredge up to NWSeveral good tugs, eventually dredge locked on bottom. When recovered,nosample, except for somewhite, brown and yellowish sediments(the latter?Cretaceous).?Was it dredgedthrough a boulder field at the base of a cliff.Dredge site 058 startednear
42 09.9 53 04.2Dredge up to ENE
After dredge 058 recovered, steamedthe following lines at full speed. GP labmaintaineda 3.5 kHz and 12 kHz watch.A 41 56.8 52 50.0B 41 40.2 52 20.0
FRIDAY 28th JUNE, JD 179continued toC 41 24.0 51 24.0D 41 25.9 51 11.6E 41 35.0 51 00.0F 41 45.7 50 06.0then reducedspeedto 8 knots and ran toG 41 50.0 50 05.0Selectedpiston core site 059. Good 5 mpiston core, bottoming in sand.Following the piston core, lost navigation display on bridge and then BIONAV.After some delays, steamedat 10 knots to
17
41 45.57
gravity core 060Small trace of very fineThen visit from Akademicuntil 2100 ADT061
41 44.7 49 57.73sand, green, almost sortedsilt. Washed out.Keldysh. Lost BIONAV. Delayed secondgravity core
49 57.02
SATURDAY JUNE 29th, JD 180When gravity core completed, steamed1 mi to ENE and streamedseismic gear torun the following lines at 5 knotsA 41 44.7 49 57.73B 4139.0 50 02.2C 41 41.8 50 08.8D 41 42.0 50 17.4E 41 47.0 50 18.0F 41 46.0 49 55.0Broke off a few miles after E to retrieve gear in time to arrive at core siteat A at 0820. Overnight weatherpoor and many BIONAV problems.piston core 062 41 44.7 49 57.73followed by Lance10t (063) at same site.When Lancelot completed, steamedat 8 knots to gravity core site 064,approximately: 41 43.0 N 50 04.5 W
SUNDAY JUNE 30th, JD 181When gravity core completed, steamedat full speedto
41 52.0 N 49 58.5 Wthen reducedto 8 knots and steamedtowards
41 50.0 N 49 52.0 WGravity core 065 near here.Heavy swell, strong winds. Corer washedout. Trace foram ooze.Deployed seismic after gravity core and run at 5 knots towards:
42 20.0 N 50 20.0 WRecover gear after about 2.5 hours in moderateseas, so as to arrive atgravity core site 066 by 0545 at 400 mwater depth near:
42 46'N .50 07 WNo recovery, so repeatedwith van Veen (067) and got fine gravel.Then steamedat full speedto grab site at 400-450 m water depth near:Grab 068 43 20.8 49 17.9 WExact site picked on basis of bathymetry.Then steamedat full speedtowards
43 17.2 49 02.5Box core site 069 chosenbefore this position on the basis of sounderrecord.Then steamedat full speedfor the rest of Sunday to
45 48'N 45 10'W
MONDAY JULY 1st, JD 182then turned to run to
45 56.4 45 15Then carried out further bathymetric surveying to locate dredge sites.Dredge 070 on northwest side of ridge; dredge 071 on southeastside. Bothrecoveredvast quantitiesof erratics and very small amounts of 1ithifiedcoarsesandstone.Pinger battery failed on seconddredge, probably due tobroken wire when bouncedon bottom.
18
After dredging, attemptedVan Veen grab 072 on crest of ridge and recoveredonly a few pebbles.When completed, steamedat full speedto
46 30.0 44 38.5then reducedspeedto 8 knots and ran towards
46 31.2 44 36.9took grab sample 073 between450 and 400 mwater depthThen continuedsteamingto:
46 55.0 44 12.0
TUESDAY JULY 2nd, JD 183Ran seismic gear (including Huntec) at 5 knots towards
47 04.0 43 15.0Brought in seismic gear at 0845, steamedon to core site 074 at:
47 01.65 43 30.3Hard looking bottom, so used a 40 ft barrel.When recovered, continued3.5 kHz line to:
46 53.5 4315.0then turned back to take box core 075 at:
46 58.27 43 23.91Recoveredone large boulder that damagedthe box. In coming away from thissite it becameapparentthat it. was locatedon the side of a valley.Steamedback to the site of core 074 and took a successfulbox core (076).Then deployedHuntec and ran back to the end of the morning seismic line,recording on the SE880.Then steamedto van Veen site 077
, ) 46 59.14 43 45.95(Note that this is near a 25 mdeep iceberg scour)Successfulrecovery of gravelly mud.Then steamedto Van Veen grab site at 385 m (078)
47 02.0 44 00.0Successfulrecovery of gravelly mud.Broke off this work at 1900 ADT
wセdnesday JULY 3rd, JD 184Steamedto point A at full speed. Deployed seismic gear including Huntec 1mile before A and ran the following lines at 5 knots:A 47 30.0 N 46 30.0 WB 47 34.0 46 35.0C 47 33.0 46 29.0D 47 30.0 46 34.0and then a further line towards B.Huntec recordedon SE880. Found shallow enhancedreflection apparentlycorrespondingto that on GLORIA. Took 50 ft piston core (059) near B at 0830.Hit hard bottom, polishedcutter, stripped teeth off catcher, which were found50 cm downcore. No trace of gas.Got underway at 1015 ADT, maintainedwatch to shelf edge.
THURSDAY JULY 4th, JD 185Steamedto 47 00 N 50 32 WDeployed only Huntec with fluid backedboomer, to run seismic line at 5 knotsto: 47 06.2N 51 00.0 W
19
Coil failed immediately on turning on. Test abandoned.Cable greasedandHuntec recovered.Steamedto St Johns.
DETAILS OF OPERATIONS AND PRELIMINARY RESULTS
NAVIGATION
Routine navigation
The BIONAV integratednavigation systemwas used during this cruise, with
the Trimble GPS and Loran-C receiver as the main source of input. The Magnavox
GPS T-Set was used independentlyto provide additional navigation. Signals for
Loran-C were acquiredon the 5930 chain. Good GPS fixes were available on a 24
hour basis. However, the criteria usedby BIONAV to acceptGPS positioning
continue to be very restrictive: as in 1990 this was at times a problem when
carrying out precisestationwork, when good GPS fixes would be rejectedand
the systemwould jump back and forth. As recommendedin 1990, there should be
an option in BIONAV to change the criteria for acceptanceof GPS.
All positions were output by BIONAV at one minute intervals and received
into the Vax computerby a logging program. Further data processing, ie.
editing and plotting was carrioedout using the SHIPAC geophysicalprocessing
and display software.
Final cruise data were backedup to a TK50 cartridge to be loaded on the
shore Vax at BIO where navigation and bathymetrycan be transferredto the
inhouse CYBER, and then into the multiparameterdatabasewhere it will be
available for plotting.
Computer Networking and Navigation [DEH]
This is the first cruise on which the shipboardVAX was set up as a file
server on the new ethernetwiring on the ship. It implementedNFS protocol
and I brought 2 PC computerswith ethernetboard and PC-NFS software. I was
able to send files to and from the VAX and PC's. It was very slow, requiring
about 15 secondsto merely do a directory listing of a small subdirectoryon
the VAX. File transfersrequiredmore that 5 minutes for a 1 Mbyte file.
20
Telnet software was not implementedon the VAX so a PC could not be used
to log on to the VAX, merely to mount a VAX subdirectoryas a drive on the PC.
DOS had accessto this drive but PCTOOLS (version 6.0) would crash if it tried
to read a file.
I had hoped to distribute navigationdata that the VAX was acquiring in
real time from the BIONAV computer. However, doing this preventedthe SHIPAC
system from logging BIONAV data on the VAX. Since this was the only BIONAV
log, I could not distribute navigation data on NFS. This may have been the
result of my complete ignoranceof VAX's.
Late in the cruise, when BIONAV was acting up, I patchedthe NMEA
output of the Trimble lOX GPS set through the twisted pair wiring to two
locations. This was the same feed (I think) which sent data from the GPS to
theBIONAV. Sending this data serially to other PC computersdid not
interfere with BIONAV.
This cruise representeda slow start to a rational computer network on
the Hudson. We have the wiring and many PC computershave Ethernet
interfaces. A suitable network protocol should be defined and a file server
installed so we can all transfer files and shareprinters (including a laser
printer please). Such a configurationmust be very robust as most cruises do
not carry the sort of network guru who keeps these systemsrunning ashore. A
shipboardsystem should also be well and simply documented. There is not time
on a short cruise for a long learning curve. The shipboardsystem should be
compatiblewith systemsashoreat BIO.
Ship's Clock [DEH]
The ship's masterclock designwhich I basedon an AT computerwas
installed in a new rugged, rack-mountableindustrial grade '386 made by ICS.
This operatedwithout problem, sending time to the displays in four labs. It
is also used to drive the airgun firing computer (not used on this cruise).
Jim Wilson, ship's tech, interfacedthis clock to his soundermarking
distribution system. This is one more step to returning all scientific data
logging to a single time standard.
21
CORING
AGC Long coring facility [WMcK]
The piston core used on 91-020 was the AGC large piston corer which
consistedof the following components:
1. Core cradle
2. Corehead(weight - 3000lbs or 1360kg, Big Red)
3. Core barrels
i) 1 barrel 6 1/4" OD, 4 1/4" ID, locatedat corehead
if) remaining barrels 5" 00, 4 1/4" ID
4. Couplings
5. Cutter
6. Catcher
7. CAB liner, 4.140" OD, 3.90" ID
8. Pilot core consistingof:
i) one way valve
ii) lead weights, 6 @50 lbs each
iii) 29" barrel and coupling to hold weights
iv) 60" (1.5 meter) long barrel, 5" OD, 4 1/4" ID
v) cutter
vi) catcher
9. 3/4" wire cable on Pengo winch ( approx 5500 meters)
10. 1/2" pilot core cable, length - length of piston core + 15 feet
11. Monorail and trolley transport system
12. Processcontainer
The coring systemused on 91-020 is basically the same system that has
been used at AGC since 1988. However someimprovementshave beenmade and
were testedon this cruise.
The pilot core was revisedwith a new one wayvalve and incorporatedinto
a special coupling that connectsdirectly onto the core barrel. This
arrangementis much more robust thus reducing the possibility of damage to the
valve. In addition, the throat area of the valve was increasedby about 150%
of previous designs. This allows for easierpassageof water through the
valve during the coring processthus resulting in more core retention.
The processcontainerwas improved with reroutedhydraulic piping and a
22
new hydraulic systemand was testedon this cruise. A double pump arrangement
operatingon a common shaft was connectedto the existing 10 hp motor which
allows for more flow to the hydraulic winches and increasesthe pull up speed
during recovery of the piston core barrelsby a factor of two. In previous
operationsexcessoil flow was dumpedback to the reservoir through a relief
valve which resultedin an excessivehigh pitch noise and a high temperature
buildup of the hydraulic oil. Due to the improvementsof the new system this
condition no longer exists and the end result is a much more tolerable work
environment. Finally the processcontainerwas also rewired and a new
electrical distribution centre was installedwhich includes a new 440/120 v
transformer, severalnew 120 v electrical outlets and lights.
The piston coring systemoperatedwell and retrieved reasonablesamples
in some rather difficult sediments. Relative small core recovery in some
casesindicates that problems still exist, however much of this can be
attributed to the nature of the sedimentsand excessivecable movementduring
the coring process.During testing on this cruise correlationbetweenliner
damageand orifice size in the split piston becameevident. Analysis of corer
performancereveals that the best size orifice on the split piston
(noninstrumentedversion) is 7/64th diameter. On the instrumentedsplit
piston (PAL), it appearsthat the orifice screw is best left out thus giving
an effective size of 1/4" diameter. However with respectto PAL, more testing
is requiredbefore coming to a definitive conclusion.
It becameevident that significant problems 。 イ セ occurring due to cable
reboundafter the releaseof the coreheadfrom the trip arm during the coring
process. The excessivemovement of the cable causesthe split piston to also
move and producesa low pressurearea inside the CAB liner which results in
liner damageand core disturbance. Further study is required to determine the
actual movementsof the various componentsand the timing of events of the
piston corer during the coring process. This study will be initiated using
data collected from CHATS and PAL which are describedin this report.
Gravity and box coring
Gravity coring was carried out from the foredeck using 1/2 inch wire and
the same corer as used as a pilot corer for piston coring.
Box coring used the standardAGC box corer with a tilt pinger.
23
CHATS!PAL - Core Head Accelerationand Tilt System! Piston AccelerationLogger
[DEH]
The Core Head Accelerationand Tilt System (CHATS) and the Piston
AccelerationLogger (PAL) were used on all of the piston cores. Significant
refinementsin their software were also accomplished. The ultimate purposeof
CHATS is to measurethe physical propertiesof the sedimentsby making the
piston corer double as a "free fall penetrometer". Initially the objective is
to understandthe motions of all parts of the corer system so we can refine
both the corer and the operatingprocedures. CHATS (and PAL) will enable us
to measurethe successof any modifications.
CHATS is an instrumentwhich is bolted in a cavity on the core head and
logs data internally as the corer is penetratingthe sediment. A spare CHATS
is clamped to the wire about 50 m above the trip arm to measurethe motions of
the wire causedby reboundwhen the 2500 kg corer is released. CHATS measures
water depth, vertical accelerationand tilt of the core head (or wire). PAL
is a companion instrumentwhich fits inside the piston of the corer. Due to
the limited space, it does not measuretilts (they are assumedto be the same
as those of the core head). We used a split piston to reduce the sediment
disturbanceduring pullout. Both halves of the split piston have a PAL.
This should enableus to accuratelydetermine the instant the piston splits.
Both CHATS and PAL log data at 100 scansper second. The data capacity
is 3 minutes in CHATS and 6 minutes in PAL. It is essentialto trigger the
data loggers just before the corer trips. Since no electrical cables are
possible to the corer system, all of the loggers must independentlysensethe
trip instant. This was the major technical hurdle to cross on this cruise.
Sensingthe violent accelerationswhen the corer trips was difficult due to
uncertaincalibrationsof the accelerometersand due to the high "noise" level
causedby wave induced and other motions of the wire.
In the later half of the cruise a "down-up-down" triggering method was
adopted. In this mode, CHATS uses its pressuregauge to
1) Wait for a presetdepth (about 500 m less than the water depth)
2) Track its maximum depth.
3) Wait for the depth to be 64 m less than this depth maximum (becausewe
winched back)
4) Wait for the maximum to reoccur
24
5) Warm up for 1 minute
and then begins logging. We would stop the winch when the core was 100 m
above the seafloor and rewind 100 mof wire. Then we payed out wire until the
corer tripped. This is a simple method of sendinga signal to all four data
loggers without an electromechanicalcable. The method worked well and only
added about 5 minutes to the coring operation.
Statisticsfor entire cruise
12 cores, 48 possible, 41 actual deployments
1 loss due to pipe breakage,spare available
1 leak and damage, repairedwith spares
2 mysterious failures, no damage
15 early or late triggers
1 worked but at slower data rate
21 good data
Cores 59 and 62 gave particularity good data. On core 62 the ship motion
induced 6 m vertical motions of the corer when it was near the seafloor in
almost 4000 m of water. Hard copies of the data are not practical at sea so
the final analysis of the data is difficult. The initial views of the data
suggestthat accuratemotions of all parts of the corer systemcan be
estimated. Among the many variableswill can be determinedare:
The instant the piston splits
The pressuresin the core barrel below the piston
The reboundof the wire as a function of time
The forces on the piston
The speedof the corer during free fall and the decelerationduring
penetration
The vertical motions of corer, before trip, inducedby surfacewaves.
The tilt of the corer after penetration
25
Table 1. Summaryof CHATS and PAL on each piston core.
dateJune
Station CHATS 1Head
CHATS 2Wire
Lower PAL Upper PAL
12 3 Still waiting on all 4 due to bad pressurecalibration.They logged data at 1 scanper second.
acc drift . noisy . acc followed goodat end accelerations depth
Automatic accelerometercalibration and noise measurementimplemented.
13 4 triggerearly
leaked anddamaged
triggeredearly
triggeredearly
Further refinementsto the trigger algorithm
14 8 trig earlyleaked alittle
not used lost good
15
16
17
17
20
9
12
13
14
29
not used
leak testonly (ok)
good
good
trig early
trig early not used not used
trig late not used not used
trig late not used not used
good not used not used
trig late no response trig earlyat end.
Down-up-down triggering
22
28
29
2
3
40
59
62
74
79
good
good
good
good
good
good
good
good
good
good
26
no tripl/snoisy depth
good
good
good
good
good
failed 11?no damage
good
good
accidentlyset to 10 / s
As a further contribution to understandingthe dynamics of a massive
object lowered on a deep seawire, CHATS was used to measurethe ship motions
simultaneouslywith the wire motions measuredby LANCELOT. Lance10t station
63 was carried out within hours of piston core station 62. On station 62,
CHATS measuredvertical motions of the core wire of at least 6 m peak to peak.
LANCELOT contains an accelerometerand data logger very similar to those in
CHATS. It logs data at 1 scanper secondso it can store data for over 6
hours continuously. Hence, unlike CHATS, it measureswire motion (at a
sufficiently high sample rate for wave periods) during the entire lowering and
return to the surface. CHATS was securedto the deck near the sheaveblock
for LANCELOT and logged data at the same rate and time as LANCELOT. This data
set should be a good measurementof the responseof wire motions as a function
of length. This should be a valuable check of plannedcomputermodels to
determine the effects of wire responseon piston corer performance.
Core processing[HC, IH]
All cores (Table 7) were processedon board. Processingincluded
photographyand sedimentologicaldescriptionof the split core, physical and
acousticproperty measurements,gas detection, and a variety of subsamp1ing
for various land-basedpost-cruisemeasurements. Processingfollowed standard
proceduresbriefly describedbelow, in addition to those procedures
establishedin the Atlantic GeoscienceCentre (AGC) sampling manual (GSC Open
File Report #1044 and as per Figure 1).
As soon as each core was on deck, a plastic bag was sealedover the
bottom of the core barrel for a minimum of five minutes with a temperature
averagingfrom 3 セッ 7 ·C. The bag was connectedto an Industrial Scientific
SP200 "gas sniffer" and the contentsof the bag sampledfor % Oxygen, ppm H2S,
and % LEL (Lower Explosive Limit). After this, the sediment temperaturewas
measuredand a sample taken for land-basedlaboratory gas analysis. Vane
shearstrength in core cutter sampleswas measuredwith a Pi1con Vane.
Push cores taken within box cores were processedin the same wayas
gravity cores and piston cores, but in more detail. Pi1con vane profiles were
conductedon each box core as it arrived on deck to give an accurate
measurementof undrainedshearstrengthbefore serious disturbancewas
incurred by subsamp1ingprocedures.
27
AGC Curation Gravity / Piston CoresCSS Hudson 91020Sampling Schedule
Shear Vaneevery 10 cm
Porewatersampleevery 10 cm
DensityScm and every10 cm
x
[XI. Velocity every10cm
(§) Palynology 15ml
O C/N Ratiosevery 10cm
セgイ。ゥョsゥコ・
....L
セ
:IJCD-CD'""CD:::JoCD(J)CDgo:::J
Ocm _
tTOP
WorkingCoreHalf
@)
IMagneticSusceptibiltyevery S cm
Foraminifera andpollen
Figure 1: Sampling figure for section core processing
, )
Whole round cores were occasionallysubsampledfor future
consolidation/permeabilitytesting, wherein 20 cm was cut out of the core at
selectedintervals. These subsampleswere noted in the log, waxed in beeswax
and maintainedin refridgerationfor safekeeping.Magnetic susceptibility
using the AGC SapphireSystemwas carried out at 5 cm intervals on all whole
round sectionsbefore they were subsampledor split. AGC long cores and
gravity cores were cut into 1.5 m sectionsand storedvertically prior to
splitting. Cores were storedrefrigeratedfor up to 1 day before splitting,
description, measurement,and further subsampling.
Sectionsof cores were processedin the CSS Hudson General Purpose (GP)
laboratory one at a time (Figure 2). The core liner was split using the AGC
Duits core splitter into an archive and working half (the sample was parted
using a stainlesssteel wire saw or, in the case of very soft sediment, an
electro-osmoticspatula). The treatmentand sampling intervals of core halves
differed according to geoscientific requirements.
Where acousticvelocity measurementswere required, the velocity
measurementsand bulk density subsamplingwere done at the same location every
10 cm on the working half. The archive half was photographedat 20 cm
intervals downcore againsta Munsell Color Chart, Kodak grey scale and color
control patch, and was then testedfor vane shearstrengthat 10 cm intervals.
A visual core descriptionwas madefor the most part on the archive half.
Whenvelocity measurementswere not required, vane shear testswere carried
out on the working half. Shells were removedwhere found and some cores were
subsampledfor gravel, organic material, clay mineralogy, grain size,
Atterberg Limits, pore water analysis, carbon/nitrogenratios and
microfossils.
Bulk density samplesconsistedof 1 oz. bottles filled to the top.
Compressionalvelocity measurementswere made using the Dalhousie/AGC digital
velocimeter. Undrained shearstrengthwas measuredusing the AGC motorized
miniature vane device with a rotation of SOD/min. The test was carried out to
post-peakrotation; remouldedtestswere performedon selectedintervals by
reinsertingthe vane into the core after it had been completelyhomogenized
with a spatula. This procedurewas comparedto the previous techniquewhereby
the test was allowed to run on until significant softeninghad occurred. The
previous techniqueshould not be used in future due to the fact that the peak
29
test inevitably producessmall voids within the core, which do not contribute
resistanceduring subsequentremouldedruns.
Removedsectionsof core were replacedwith foam to prevent settlementof
remaining material. Working and archive halves were then wrapped in plastic
food wrap onboard, baggedin heavy 4 ml plastic sleeving, labelled, and stored
in "D" tubes in the refrigeratedcompartmentat 4° C. Over a 23 day period,
more than 10 long cores (Table 8), 34 gravity cores (Table 8) and 5 boxcores
(Table 12) recoveredmore than 90 metres of sediment.
All subsamplinginterval information was enteredinto the Field Inventory
SubsamplingSystem (FINSS). This packageprinted labels for subsamplesand
summary sheetsof core sectionsat sampled intervals.
Summaryof results of coring [DJWP]
Albatross slope and rise001. Gravity core, upper slope.Minor recovery that washedout. Traces coarsesilt on cutter.This lithology probably typical of upper slope at this depth.
002. Van Veen grab, upper slope.Good recovery.
003. Piston core. S. of Phil Hill area.Acoustically dark GLORIA areawest of Albatross debris flow. 10 mstratigraphiccore. Velocity run.Normal Holocene over brick-red horizons. Major sticky brick-red unit may befine-grained turbidite. Overlies stiff homogenousgrey mud with dropstonesandshells ?debris flow.
006. Box core. Levee immediately east of Albatross debris flow.Brown over olive grey mud. Well consolidated(?biologic effect).
007. Piston core. Levee immediately eastof Albatross debris flow, near 88-010-24.Problemswith split piston.Piston core has olive grey mud sequenceunconformablyoverlying moreconsolidatedmud with a beautiful set of stiff blocks, within a red mudmatrix. Some stiff blocks up to 45 kPa, and foram rich.
008. Piston core. Centre of debris flow in valley.TWC has sand at surface and three other sand or silt beds interbeddedwithforam ooze. Sands are sharp top and base (?A div.). Sand over 2 m of stiff mudin PC. Mud appearshighly disturbed, in part sucked in. No geotech.measurementsmade.
30
Whole Core
AGe Curation
CSS Hudson91020 SampleFlow
セ Work!D.9 _ )Archive .
+
Cruise Sheets*Correct Fix, WDLengths
*Gas test top/bottom core
Cut into 1.5 m lengthsMetre tape/line/recap/waxLabel both sides
+*Magnetic Susceptibility i セ
+
* Consolidation testcap/wax/store salt water
+
*SUBSAMPLINGDensity/water contentPalynologyOrganics/ IsotopesGas/PorewaterForaminifera
I*Shear Vane
Double wrap/ Plastic sleevingD-tubesHudson Cold locker
+*Velocity I
* PhotographedDescribed
Split W/A halves on splittingセ line Wire/hot wax; plastic wrap
.---------, .....------
* Data entered into FINSS
Figure 2
009. Piston core into probably erodedseabed (originally interpretedasdebris flow).Well stratified sequenceof muds and thin silts.!WC has surface red mud over foram ooze and lower down a red mud inter-bioturbatedwith foram ooze. Mud at baseof !WC.Microfault at 780 cm: extra shearvane data around it.
010. Van Veen grab. Surface 2-4 cm of red clay over foram ooze. Both sampled.
011. !WC only. Bottom interpretedas possibledebris flow, but probably erodedstratified seabed.Foram ooze over grey mud.
012. Piston core into interpreteddistal end of main debris flow. 22 ftpenetration.Mud turbidites interbeddedwith hemipelagicsediment. At leasttwo unconformities identified from abrupt increasesin shearstrength. Debrisflow with Meguma clastsbelow 4.3 m, highly compacted.
013. Piston core on low levee E of main debris flow. Shows the 14 ka brick redhorizon, and near base, thick medium sandbed over two red mud units.
014. Piston core in main debris flow. Holocene olive grey mud over two sandbeds.
015. Camerastation at same site as main debris flow. 8 shots before trip wiretangled.
St Pierre slone016-019. Heat flow probe stations.
020. Gravity core in debris flow at 1000 m.
021-026. Series of gravity cores on upper slope in SAR zone 1, from 500 to 300) m. Silty green structure1essmuds, abundantsiliceous organismsand fecal
pellets.
Stations027-029 were all at the same area, and equivalent to 90-015-002 andHMG1-1.027. Lance10tprobe. Showed some・セ」・ウウ pore pressure.028. Box core, 35 cm. Common Ma1danid burrows, very irregular and spatiallyinhomogenoussedimentstrength.029. Piston core. Somegas expansion. Cutter damagedby pebble.Note: digital Huntec run through the site.
030-032. Heat flow probe stations.
033.Lance1otprobe at site with abundantpockmarks at crest of valley side onSAR. Probe draggedtwice. Does not appear to have excesspore pressure.
034-038. Series of gravity cores on upper slope passingthrough 86-034-001, inwater depths of 505 to 320 m.
'039. Heat flow probe at same site as box core 028.
32
040. Piston core on low ridge in "debris flow" beside channel in SAR area 1.Olive grey mud overlying slabs of different muddy lithologies, with one clearblock at about 40 cm. Rests on mottled brown mud at about 2m. Gas expansioncracks in lower part of core.
041. Lance10tat same site as 040. Successful.Some excesspore pressure.
042. Gravity core in channell km NW of 040. Contains 50 cm olive grey mud?unconformablyover stiff grey mud. 4 grain size samplestaken of mud. No sandvisible at unconformity.
043. Lancelot at same site as 036 and 86-034-001on upper slope. Successful.
044. Box core on ?in situ high on southernSt Pierre Slope. Only 200 mwide,but pinger record suggestscore was on in situ butte. Core contains a 30 cmmud clast conglomerateover soft olive-grey mud.
045-047. Heat flow probes in SAR zone 3. Computer problem on 046; no data atall on 047.
048. Lancelot on debris flow (of Alvin dive and core 6) in lower St PierreValley.
SouthwestGrand Banks margin049. Box core at Narwhal site.
050-055. Upper slope transectNE of the Narwhal site. 050-052 gravity cores;053 water sample, 054-055 Van Veen grabs.
056, 057. Dredges on Fogo Seamount29. No rock sample recovered.
058. Successfuldredge on Fogo Seamount29.
Titanic area059. Piston core on slide north of Titanic area.
060-063. Series of stationsbetweenTitanic Valley and Titanic wreck.060. Gravity core. Washed out: trace of silty sand.061. Gravity core. Foram ooze over fine sand over grey mud over brown 38 KPamud over stiff grey mud.
062. Piston core just west of Titanic wreck.
063. Lancelot at site 062. Fell over. No success.
064. Gravity core in "debris flow" facies of SAR survey NW of Titanic valley.Washed out, trace of silty sand. Sounderrecord is diffusive.
065. Gravity core washedout. Trace foram ooze and gravel.
SoutheastGrand Banks margin066. Gravity core washedout.
33
)
067. Van Veen at same site, gravel < 2 cm.068. Van Veen. Gravel.069. Box core at about 1200 m. Successfulmud. Looked on sounder like a mudfilled valley ?over a debris flow.
Submarineridge south of Flemish Cap070. Dredge, with many erratics and rare lithified coarsesandstone.071. Dredge, with many erratics and rare lithified coarsesandstone.072. Van Veen from crest. Recoveredonly gravel.
Easternflank of Flemish Cap073. Van Veen at 400 m. Recoveredgravel.074. Piston core. Long stratigraphicrecord of silty gravelly mud. Shells.075. Box core. On side of valley. Recoveredone boulder.076. Box core at site of 074. Successful.Abundant spongesat surface.077. Van Veen at limit of iceberg scouring. Successfulrecovery of gravellymud.078. Van Veen at 385 m. Successfulrecovery of gravelly mud.
Flemish Pass079. Piston core into shallow reflective bottom on GLORIA and Huntec. Sounderrecord shows 20 ft penetration.Mud at surface. Hit sand the strippedcatcher,then 2 m mud, then more sand that eventually stoppedit and washedout about 3m. Note CHATS record. coring disturbancebelow 127 cm.
Estimatesof Coring Losses from physical propertiesdata [HC]
Several approacheswere used to identify zones where coring did not
recover sediment. The physical propertieswere used to compare the trigger
weight cores to the piston cores. In most cases, there was sufficient overlap
to match up profiles of magnetic susceptibility, undrainedshearstrengthand
velocity. Less reliance was placed on strengthand velocity due to- the
likelihood of some remoulding in the uppermostfew metres due to piston
effects. Table 2 summarizesthe findings of this exercise.
Note that peak-to-remouldedvane strengthdrop was minimal to nonexistent
in PC 008, clearly indicating that it was completely remoulded. Given the
damage to the liner and deformationstructuresin the core, it is likely that
the remoulding occurredduring sampling and is not an in situ signature. The
uppermostmetre in nearly all piston cores were affectedby sampling, as
comparedto the trigger weight cores. In severalcases, strengthsin the
piston core have clearly been lowered to the remouldedvalues (PC 009, top 40
34
cm; PC 014, top 2 m or more). The large pressurespikes developingbeneaththe
piston in responseto wire motions during the sampling processmeasuredwith
CHATS/PALS are easily capableof causing this degreeof disturbance.
Table 2. Estimatesof core-top loss from physical propertiesdata
Core Number Length Missedby Piston Core
(m)
Criterion Used ConfidenceLevel1 - Low, 10- High
PC-03
PC-07
PC-08
PC-09
PC-12
PC-13
PC-14
PC-29
PC-40
PC-59
PC-62
PC-74
PC-79
0.30 Su 2
0.93 Su, MS 8
>0.60 NO MATCH 8
0.05 Su, MS 10
0.12 Su, MS 7
>2.00 NO MATCH 7
0.20 Vp 5
>0.90 NO MATCH 8
>1. 70 NO MATCH 6
0 Su, MS 10
0.45 Su, MS, compressed 5
35
MICROPALEONTOLOGY [PJM]
The primary goal in micropaleontologyfor this cruise was to collect
samplesof recent sedimentswhich can be shown (through Pb210 , Cs137 or C-14
ages and pollen stratigraphy) to representdepositionduring the past 50 years
or less. These samplesare required for accuratecalibration of modern
dinoflagellate, coccolith and diatom floras, and modern foraminiferal formas IイセセヲGagainst recent (50-year) records of sea surface temperature,salinity, sea ice
and biological productivity. The dinoflagellatedate will form part of North
Atlantic proxy-climate data basebeing compiled by an international team セ/'J
/'headedby A. de Vesnal (GEOTOP, UQAM) , P.J. Mudie (AGC) , L.E. Edwards (USGS,t...."
Reston) and J. Guiot (U. m。イウ・ゥセセセセセfイHIdセ foram and coccolith ,data will
be studied inI- joint progran?with/. ォ _ e B L L B G Z セ ォ ォ Z ウ オ Z Z Z Z Z Z サ ュ Z j n M I N Diatom data will be
studied in a collaborativeprogram with John Andrews and K. Williams, INSTAAR./·
Visual descriptionswere made of all shipboardcores in order to identify ------
suitableb'iostratigraphicsectionsfor late Quaternarypaleoclimatestudies,k
and to obtain better understandingof depositionalenvironmentsdominatedby
gravity flow deposits: debris flows, turbidity currents.
High quality data were obtainedfrom 6 box cores and 5 Van Veen grabs
(Fig. 3) from mid-slope areaswith apparentlyconformablecover of hemipelagic
mud as seenon 3.5 kH4 records. One other box core and 3 Van Veen grabs failed
to recover mud on Flemish Cap, apparentlybecauseof the prevalenceof large
ice-raftedclasts (coarsegravel- to boulder-si4ematerial was retrieved).,
Each box core was subsampledwith 5 pushcores(35-40 cm long). Bulk samples
were taken of surfacesediment (0-2 cm) and of one or two deeper layers that
will be used. to extract forams and shell fragments for radiocarbonages.
Palynological sampleswere taken at 5-10 cm intervals in these cores, at the
same levels as samples taken for C:N and stable isotopes in pore water
(Cranston& McThenia).
The box cores all recoveredin-situ living benthos on undisturbedseabed
surfaces,and they provided a standardfor assessingpresenceof loss of the
surface layer in gravity cores. Fourteengravity cores were recovered(Fig. 3)
in which the late Holocene surface layer was retained. These core tops will
also be used for the proxy-climate data base. Comparisonof losses in gravity,
!WC and LCF piston cores will be made using palynological, geotechnicaland
36
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geochemicaldata, and it is planned to publish a short paper with Christian &
Cranstonto document the need for careful seabedjcoretopsampling in proxy-
climatic data studies.
About 60 metres of core were described,using the Munsell colour codes
for freshly cut surfaces;visual characteristicsof sedimentaryand biological
structures;amount and size of gravel; and microscopeexaminationof
foraminifers, diatoms and other biosiliceous microfossils. Eight LCFjgravity
cores have been identified as warranting detailedstudy, as outlined below.
In the Albatross debris flow area, dinoflagellateand pollen-spore
assemblageswill be comparedin pairs of levee-channelcores from the slope
(91020-013, -014) and rise (91020-011, 012). This study will look at (A)
possible sorting of fine grained organics in levee vs channelmuds; (B) "down-
slope" sorting vs pelagic rain of palynomorphs; (C) the provenanceand ages of
red mud beds, e.g. Gulf of St. Lawrence 1929 earthquakevs older Scotian Slope
red muds vs Wisconsinanice-rafteddebris of multiple sources.
In the St. Pierre Bank and Narwhal study areas, gravity cores 91020-034&
053 recovered>1 m of olive greenmuds with abundantdiatoms, fish scalesand
pollen. These cores indicate high organic sediment influx from both
hemipelagicand fluvial sources.Abundant shells will be used to compare
distal, oceanic and estuaricpalynofacieson a transectfrom Cabot Strait to
the Laurentianfan.
In the Titanic wreck area, gravity core 91020-061 recovereda sequenceof
Holocene muddy foram ooze overlying sandy mud with abundantcold water forams,
well-roundedquartz sand and plant fragments (wood, marsh peat and rare moss
leaves). An attempt will be made to determine the age and origin of the mixed
pelagic-terrigenousdeposit, i.e. a late Wisconsinanf1uvio-glacial sediment
vs a younger debris flow incorporatingglacial stagesediment from valleys on
the edge of the Grand Banks.
LCF core 91020-074 from the northeastslope of Flemish Cap recovered
about 7 m of brown or grey carbonatemuds with foraminifers, ·interbeddedwith
clastic sandy-gravellymuds and shell fragments. This appearsto be a sequence
of hemipelagicHolocene interglacial and mid-Wisconsinanglacial sediments
with ice-rafteddebris. The core may provide an important paleoecologicallink
betweenthe pelagic sedimentcores from Orphan Knoll and the Newfoundland
Seamounts,and shallow water cores from the NewfoundlandShelf.
38
GEOCHEMISTRY PROGRAM [REC]
OBJECTIVES
Objective 1
Significant amounts of methanehydrate (frozen methane-watermixture) may
exist in the marine sedimentcolumn. If global warming becomessignificant,
and oceanwaters warm by a few tenths of a degreeCelsius, thesemetastable
methanedepositscould decompose,releasingup to 180 L of methane (at
standardtemperatureand pressure)per litre of hydrate. The major
geochemicalobjective was to evaluatewhether excessmethaneexists in the
upper metre of the sedimentcolumn in 300 to 500 mof water, where the bottom
temperatureis 4 to 5 degreesCelsius. At 4 deg C, methanehydrate is stable
at depths greater than 380 m, while at 5 deg C, methanehydrate is stableat
depths greater than 420 m.
Since oceanwarming by eddy diffusion could warm the upper 500 mof the
oceanover the next century, the stability zone down to 500 m was targeted.
It is feasible to predict that methanehydrate could occur in sedimentsin
water depths greater than 500 m, however the increasedpressurewould allow
hydrate formation deeper in the sedimentcolumn in zones which would be
affected less by warmer surface oceanwater over the next century. Diffusion
of heat into the sedimentcould warm the upper 10 m of the sedimentcolumn,
thus hydratesat greatersedimentdepths would not be affected. It was
calculatedthat if 'hydrate quantities' of methaneoccur in the upper 10 m of
the sediment, we would be able to detect this amount with 1 m gravity cores,
or even grab samples, since the excessgas would constantlybe diffusing
through the sedimentcolumn.
Methane occurs in marine sedimentsas a result of biogenic production in
anoxic sediments,and at greaterdepths, as a result of thermogenic
hydrocarbonformation. Hydrate formation requires a large amount of methane,
equivalent to about 10% organic carbon (dry weight) being convertedto methane
and 'frozen' as a hydrate. As a result, it is ·ratherunlikely that coastal
sedimentsin the study area could produce enoughbiogenic methane to form
hydratesover large areas. If biogenic hydratesare present, they would
probably occur where the methaneaccumulatedin a trap, e.g. migration along a
permeablepathway until the pathway was terminated. It is possible that
39
thermogenicgas seepscould supply sufficient methane to form hydrates in the
region, again migrating along pathwaysof less resistanceuntil trapped, or
until hydrate stability conditions are encountered.
A variety of gravity core/grabsample transectswere planned, over water
depths of 300 to 500m, along the edge of the Scotian Shelf and Grand Banks.
Sampling resolutionWas set at 50 m intervals, as it was calculatedthat the
large amounts of gas required for hydrateswould be detectedover a 25 mzone,
where bottom slopes are 50 to 100 mper kilometre.
Objective 2
To provide shipboardchemical data to estimategravity and piston core
top losses. This is done by comparing depth profiles from box, trigger and
piston cores for various chemical parametersaffectedby reactions that are
taking place in the sedimentcolumn. If the profiles overlap without having
to shift the depth axis on the piston core results, it can be concludedthat
less than 10 cm of sedimentwas lost off the piston core. If the piston core
profile has to be offset by 100 cm, for example, for more than one chemical
parameter, it is quite probable that at least 100 cm Waslost off the top of
the core.
Objective 3
To determinediageneticprocessesin Holocene/Pleistocenesedimentsalong
the slope off the ScotianShelf and the Grand Banks. In estimating the
mechanismfor global carbon cycling in ocean sedimentsand its relationship to
the greenhouseeffect, it is important to understandthe balancebetween
organic carbon flux to the sea floor and the flux of oxidants into the sea
floor. Since methane is often found in marine sediments,and it is a very
effective greenhousegas, it is important to understandthe distribution of
carbon, oxidants and methanein various environments,and to evaluate the
presentday diageneticreactions that are producing and consuming the methane.
40
METHODS
Hydrate Transects
Gravity core or grab sampleswere taken at 50 m intervals over the depth
range of 300 to 500 m. As soon as the samplerwas recovered, a digital
thermometerwas used to record the sediment temperature. At the 400 m
station, a Knudsenbottle, fitted with 3 reversing thermometerswas used to
collect the water temperatureand a water sample from 20 m off the seabottom.
These temperaturestendedto be about 0.2 deg C higher than the mud
temperature;this is due to the fact that the water temperaturesbetween50
and 250 mwere very cold (1.5 to 2.5 deg C along the S. Grand Banks), causing
the core to cool during recovery. A hand-heldmethanegas meter (Industrial
Scientific HMX 271) was used to check for excessamounts of methane in the
sedimentsample. The meter has a detectionlimit of 1000 ppmv methane in air
and was calibratedwith a 1% methanestandard. Approximately 200 ml sediment
sampleswere sealedin 'mason' jars fitted with septumsfor headspacegas
analysesat the Coal ReseachLab in Sydney.
Subsamplesof sedimentwere collected for pore water and solid phase
analyses(see below). A hand-heldrefractometerwas used to determinepore
water salinity, since melting hydratesreleasesalt-freewater, thus reducing
the salinity.
SedimentRedox Potential and pH Analyses
Split core sectionswere taken to the geochemistrylab where eH and pH
electrodeswere inserted1 cm into the sediment, at intervals of 5 to 50 cm.
The redox potential (uncorrectedeH) measuredwith calomel and platinum
electrodeswas displayedon a digital meter. The electrodeswere calibrated
with Zobel solution. The sedimentpH was measuredusing a Ross electrode,
standardizedwith pH 7 buffer.
SedimentSubsamplingand Pore Water Collection
Approximately 40 ml portions of wet sedimentwere removed from the split
core and placed in 50 ml centrifuge tubes. Pore water was extractedby
centrifuging the sampleswith either one of 2 table-top centrifuges (IEC-HN-S;
lEC-Clinical). Gimboles were not used as the' centrifugeshad solid shafts
which allowed centrifuging under most sea conditions. Pore water recovery was
41
often limited to less than 0.5 ml, however this was enough for sulfate, silica
and ammonia analyses. The pore water was decantedinto a syringe and filtered
through 0.45 um Gelman Acrodisc filters. After shipboardanalyses, the
residual pore water was acidified to pH 2 and stored in scintillation vials at
4 deg C. The centrifuge tubes containing sedimentwere storedat 4 deg C for
subsequentgeochemicalanalysesat BIO. If gas cracks (gaps in the sediment)
appearedin cappedcores before being split, sampleswere sealedin 'mason'
jars for alkane gas analyses.
Dissolved Sulfate Analyses
A 50 uL portion of pore water was placed in a 15 ml test tube, to which
50 uL of 300 roM barium chloride solution was added. The sulfate combineswith
the barium to form a fine cloud of barium sulfate precipitate. This was then
diluted with 4 ml of de-ionizedwater and the turbidity of the solution was
measuredusing a hand-heldSpectronicMini 20 analyzer fitted with a
nephelometerattachment(manufacturedby Milton Roy Inc.). The turbidity
meter was calibratedwith standardseawaterand bottom water collectedduring
the hydrate transects. The precisionand accuracyof the method is +/- 10%.
Sample storageis not a problem. Some sampleswere re-centrifugedand re-
analyzeddays later and very similar resultswere achieved. The Mini-20
detectorwas very reliable if warmed up for a few minutes before analyses,and
if it was turned off betweensamples, to avoid pegging the meter needle.
Dissolved Silica Analyses
Dissolvedsilica was determinedusing the OceanDrilling Program
colorimetric technique. One hundredmicrolitres of pore water was added to
ammoniummolybdate along with an acidic reducing agent to form a blue
silicomolybdatecomplex. The color density was determinedat 812 nm using the
same baseunit for sulfate analyses;a hand-heldSpectronicMini-20 detector
fitted with a colorimeter attachment. The method was standarizedwith sodium
silicate; the accuracyand precision is +/- 10%. Sampleswere re-analyzed
after storageand the results were very good. If the samplesare storedcold
and in the dark, minimal biodegradationwill occur. Dilute standardswere
stable for at least 2 weeks.
42
Dissolved Ammonia Analyses
Dissolved ammonia wasmeasuredby colorimetric absorbanceof the oxidized
nitrogen complex in a ferricyanide solution after the method use by ODP.
Absorbancewas measuredat 640 nm with the Mini 20 colorimeter, standardized
with ammonium chloride. 'The precisionand accuracyof the methods is +/- 10%.
Stored samplesand dilute standardsappearedto retain their concentrations
very well over periods of up to 2 weeks.
ChemetricsAnalyses
A new approachto pore water analyseswas implemented, using evacuated
ampoules (ChemetricsInc., Calverton, VA) containingpre-mixed reagentsthat
are required to react with a sample to produce a colorimetric endpoint, which
is visually comparedto standardsin sealedampoules. Semiquantitative
analysesfor silica, sulfide and ammonia were comparedto standardmethods.
RESULTS
Hydrate Transects
The gravity core lengths tended to decreasefrom 1.5 m at 500 mwater
depth to 0.3 m at 300 mwater depth. In some cases,grab sampleshad to be
taken in the shallower water, as the sandy sedimentcould not be recoveredby
the corer. No excessmethanewas detectedin any of the hydrate transect
samples. Pore water results indicate that all samplescontaineddissolved
sulfate, indicating that very little methanewas present, since sulfate and
methanedo not co-exist in pore waters. It is concludedthat excessamounts
of methaneand/or shallow gas hydratesare not a widespreadphenomenain this
region, although that does not rule out further studies, using piston cores in
water depths up to 1000 m, or looking for potential anomaliesbasedon
examinationof seismic records. In this region, the natural stratigraphy
could easily mask bottom simulating reflector (BSR) occurrences. In addition,
the sea floor at these depths is often very hard, again making it difficult to
see hydrate reflectors near the sediment/waterinterface.
43
Core Top Losses
Geochemicalprofiles were determinedin box, trigger and piston cores in
an effort to overlay the plots and estimatecore top losses. Since silica
tends to increasedramaticallywith depth in the upper 50 cm of the sediment
column, this can be a good indication of core top loss. Ammonia also tends to
increasewith depth, however the point where it begins to increaseis,
variable, thus the plots for trigger and piston cores have to overlap. Often,
it appearsthat the amount lost off the piston corer was greater than the
length of the gravity corer. Dissolved sulfate tends to decreasewith depth.
However the upper meter or so is often not depleted, and thus unless an
overlap can be seeri, this method can only give a minimum core loss estimate.
The solid sedimentresults for pH and pE are often noisy and of little use in
predicting core loss, however the pE tends to increasetowards the surface,
and some use was madeof this data.
Table 3 contains approximatecore top lossesusing geochemicalestimates.
Results suggestthat from 10 to 180 cm was lost off piston core tops, while 10
to 80 cm was lost off gravity cores. These estimatescan be taken as minimum
core top losses; and clearly have to be comparedto geotechnical,
stratigraphicand paleontologicalevidenceof core top loss.
Core Analyses
Sulfate Results
The concentrationof sulfate tends to decreasedowncore as reducing
conditions occur, since sulfate becomesthe dominant oxidant for organic
matter after oxygen and dissolvednitrate is consumedin the upper sediment
column. The depth where the sulfate concentrationreacheszero is indicative
of the organic carbon flux to the seafloor, since a higher flux tends to use
oxidants at a faster rate. For example, in Halifax Harbour, the organic flux
is relatively high (5 % organic carbon, 200 cm/ka sedimentationrate) and the
sulfate decreasesto 0 mM at 50 to 100 cm in the sedimentcolumn. In coastal
areaswith sedimentationrates on the order of 20 cm/ka, the organic flux is
less (1 % organic carbon) and the sulfate decreasesto 0 mM between1 and 5 m
downcore, dependingon the actual carbon content and sedimentationrate. In
pelagic environments, the organic flux is low (0.05 % organic carbon, 0.5
44
cm/ka sedimentationrate) and sulfate is observedto reach backgroundvalues
at depths of tens to hundredof meters in the sedimentcolumn.
Piston cores in the St. Pierre areahad sulfate gradients that suggest
sedimentationrates on the order of 100 cm/ka, basedon sulfate gradients,
while the ScotianSlope rates were at least an order of magnitude lower.
Ammonia Results
We had a limited amount of weighed reagents, thus not all sampleswere
analyzedfor ammonia. Milligram quantitiesof phenol and sodium nitroprusside
had to be weighed out on land. It is possible that the solid reagentscould
be taken to sea and the approximateamount selected (a few grains) to make
the daily solutions. Good ammoniaresults are imperative as they begin to
reflect the organic flux to the sedimentcolumn at shallower depths than does
the sulfate data. Estimatesof sedimentationrates using ammonia gradients
suggestthat the Scotian Slope areahas rates on the order of 10 cm/ka, St.
Pierre rates are on the order of 100 cm/ka; while the southernGrand Banks
slope has a sedimentationrate on the order of 10 cm/ka. Flemish Pass results
suggesta sedimentationrate on the order of 50 cm/ka.
Chernetries Analysis Method
The resultswere reasonable,with the advantagethat the method is very
inexpensive ($4 per determination),and fast (less than 0.5 minutes per sample
comparedto 2 minutes for the standardcolorimetric methods); there is no need
for a trained analyst; and the samplevolume for ammonia and sulfide was only
20 uL. The downside is that the detectionlimit for ammonia and sulfide is
poor; the volume required for silica is 0.5 to 1 ml of pore water; and the
results are semi-quantitative. The real value of the approachis to quickly
test samples for concentrationrangeswhen deciding which samplesmust be
analyzedmore accurately, and what concentrationrangeswould be expected. A
variety of other chemical speciescan be measuredusing this system, including
iron and manganese.
45
Table 3. Estimatesof core top loss from geochemicaldata
Core Water Trigger Core Piston Core
depth Esti Core Recovery Estim. Core Recovery
(m) Loss Recov. Efficiency Loss Recov. Efficiency
(cm) (m) (X) (cm) (m) (X)
003 2730 >40 1.9 100 >60 9.9 100
007 2650 >80 1.6 80 >180 4.3 50
009 4070 >20 1.8 90 >50 10.0 ?
011 4310 >20 1.3 90
012 4340 >10 0.6 70 >40 4,8 50
013 3450 >20 2.0 100 >100 7.4, 50
014 3530 >10 1.6 80 >50 2.7 70
029 1330 >10 0.5 ? >80 7.5 60
040 1060 >10 1.4 80 >130 6.8 60
059 3621 >10 1.4 100 >10 4.5 50
074 972 >50 1.6 100 >200 7,8 80
079 1143 >20 0.5 30 >100 2.0 30
46
SEISMIC REFLECTION PROFILING
Methods
Seismic lines were run at about 5 knots. The standardAGC seismic
equipmentused consistedof:
Seismic Engineeringhydrophone100 ft.
N.S.R.F. Mark Sa hydrophone18 ft.
Texas Instrumentssleeve gun 40 cu/in.
Rix compressorsBI 44 and J-196.
Hydrophone amplifiers.
Time varying gain amplifiers.
Kron-hite filters
LSR 1811 graphic recorders.
AGC clock and firing box.
Racal 4 channel tape recorder.
Huntec small fish with standardand fluid backedboomers
The sleeve gun data were displayedat 1 or 2 sec. sweep dependingon
water depth and penetration,with a firing rate of between2 and 6 seconds.
SE88l·Digital Seismic Data Logger [DEH]
Under the Digital Initiative program, AGC has recently acquired2
high speeddigital data loggers for seismicsand side scan. These units,
GeoAcousticsSE880, had initial hardware and software problems. One unit has
been recently upgradedby the company and this was the first opportunity to
test the SE881 on an AGC cruise. (It had been used in a near-shoresetting on
a PGC cruise to the FraserDelta.)
The unit performedwell with not a single one of the hardware or
software faults that plagued the early versions. We experimentedwith
different fixed gain amplifiers betweenour single channel seismic streamers
and the SE881 which required a +/- 2 volts peak to peak signal. In deep
water, with a 40 cu in sleevegun, we used 66 db gain. A small amount of the
data was dumpedto the VAX and analyzedon a PC. It appearedthat this gain
level was too high and was later dropped to 50 db. Appropriate playback
hardware and software were not available, nor was the interfacebetweenthe
SE881 and an EPC recorder.
The operator interface is not particularly friendly but the. unit was
47
set up for operationby the watchkeeprs. We have produceda list of necessary
and desirable improvementswhich should be pursuedwith the company. Among
these are:
1) One software error which prohibits certain settingsof delay and window
length.
2) Show saturationin red with low signals in blue.
3) Restorecolour map reversalafter a systemrestart. (All other
parametersare properly restored.)
4) The ability to write EOF's on tape, either under operator interventionor
every hour. Otherwise, the data files from a long line will be
inconveniently large (350 Mbytes per 8 hours). If the system is stopped
and restartedto do this the slow tape transportwill cause the" loss of
15 minutes or more data.
5) A '''scope''mode of screendisplay. This would show the signals on the
screenin an oscilloscopemode insteadof a line scan recorder format.
All of the display selectionssuch as gain, TVG, rectification, window
size, number of channelswould apply. Obviously colour mapping is not
required. On set up, one would set no enhancements,no gain and could
easily view if the input levels were appropriate. Then the systemwould
be switchedback to line scan mode. It may be necessaryto switch to
'scopemode periodically to check gains and this would erasethe data on
the screen. It should not however interfere with hardcopyoutput.
6) Copy a piece of the tape to the disk and then do playbacks for disk.
This should make it much faster to choosegains, filters, .. as rewinding
(and especiallyskipping files) takes so long on the Exabyte.
7) On playback, we should be able to pause the tape reading to give time to
adjust parameters.
8) We need a set of amplifiers with known gain, low frequency roll off and
adjustableantialias filters. These should be coupled to the SE881 in
such a way that gain settingscan be stored in the trace headers.
48
Summaryof results
Slope and rise south of Albatross: Detailed patternof strike and dip lines
that correlatewith previous seismic and show both down channel changesin
debris flows and the cross-channelcharacteristics.
St Pierre Slope: selectedlines including Huntec to provide seismic
correlationbetweenexisting SAR airgun lines and NSRF sparker surveys; and to
run down major drainagesystemson the upper slope.
Narwhal area: strike line to tie 85-001 profile off Whale Bank to the Narwhal
site survey. Zig-zag patternof lines on upper slope above Narwhal site
survey.
Titanic area: seismic lines to better define the westernmargin of the slide;
and the Titanic valley systemupstreamfrom the wreck. 3.5 kHz lines run also
to help groundtruth SAR imagery.
Flemish Cap: Huntec and airgun dip line run out on SE spur of the Cap. Huntec
shows buried horizons with iceberg scour.
Flemish Pass: Huntec and airgun run in vicinity of GLORIA bright spots in
order to locate coring site.
49
LANCELOT PIEZOMETRIC STUDIES
Method
Lancelot-II is a prototype piezometricpenetrometerjointly developedby
AGC and PGC that was designedto emplacea porous element in the seabedby a
distanceof up to 3.3 m. The instrumentmeasuresthe excesspore water
pressuregeneratedby rapid penetration(undrainedfailure) as a function of
time throughout the period that it is in situ; nominally I hour. Lancelot also
measurespitch and roll, as well as vertical acceleration.The first
deploymentat LAN-I had an additional channel recording the absoluteor
hydrostaticpressure,but this was dropped from later deploymentsas it
provided no critical information and the sensorwas required in CHATS. The
tool has an extendedmemory capacityover its predecessor,Lancelot-I, which
was successfullyused at two sites in 4.5 km of water at the BermudaRise
during Hudson 89034. It is now capableof logging data at I Hz for up to 6
hours per deployment. The electronicspackagefor this prototype was
constructedonboard from spareparts of the CHATS system.
The excesspore pressuregeneratedby forcing a probe 3.3 m into the
seabedis only a tiny fraction of the total hydrostaticpressurein the water
column, which requires that the sensorbe of the differential type, measuring
pressurerelative to the hydrostaticpressureacting above the seabed.A high
sensitivity Validyne DP9-34 differential pressuretransducerwas used for this
purpose.. Two shipboardcalibrations indicated a very high degree of zero
stability and an ability to resolve changesin pressureas small as 1 rom of
water head. In future, a lower sensivltivity but high capacity transducer
diaphragmwill be used to better define pore pressurespikes during
penetration. Initial excesspore pressuresranged from 20 to 50 kPa and can be
related to the sediment type and stresshistory. Undisturbedconsolidation
subsampleswere taken from adjacentpiston cores to support this calibration
effort.
Lancelot was basically designedto do two things: to record the entire
pore pressuredecay curve or consolidationresponsefollowing insertion of the
tip, as well as to sensethe in situ equilibrium pore pressureonce
consolidationwas complete. It was estimatedthat I hour would be sufficient
for equalizationto occur in most sediments,an assumptionthat was shown to
be valid for all but very fine-grainedsediments.The excesspore pressure
50
I )
decay curve yields valuable data on the in situ rate of consolidation
following undrainedfailure, which when related to compressibilitydeduced
from adjacentlab consolidationtest specimens,allows a direct calculationof
the coeffiecient of permeability, in turn thereby completely defining the
capacity for pore fluid migration as a function of stressand porosity for any
given sediment type. These parametersare of critical importance in modelling
the shearand consolidationbehaviourof debris flows as well as the formation
of unusual erosive seabedfeaturessuch as pock marks, wherein presumeably
fluids/gasesare emergent.
Lab permeability tests are plannedon the same consolidationspecimensas
used to identify the compressibilityand stresshistory for the Lancelot sites
in order to calibrate the prediction of permeability achievedfrom the
Lancelot decay curves.
51
Table 4. Summary of Lancelot deployments
station Water Depth Geology uo i t so ch Su.vane Su.lance
(m) kPa sec cm2/sec kPa kPa
27 1329 gassy, pock 2.5 0.075 210 9.82X10-3 10 NA
33 689 pockmarked 2.0 0.066 162 1.27Xl0-2 11 8-16" " " " 200 1.03X10-2 " 4-7" " " " 175 1.18X10-2 " 4-7
41 1020 gassydebris 3.0 0.090 60 3.44x10-2 16 18-36) flow
43 413 ? 0.5 0.015 28 7.37x10-2 10 6-12
48 2379 debris flow 6.7 0.237 NA NA NA NA
63 3696 olc undist. NA NA NA NA NA NA
uo = in situ equilibrium excesspore water pressuret so = time for 50 % excesspore water pressuredissipationch = horizontal coefficient of consolidationi = hydraulic gradient causing fluid movementSu vane = minivane undrainedshearstrengthSuo lance = predictedundrainedstrength from Lancelot installation
•
i = U o10.1 * Z
Su.lance = u,X
where Z = depth of porous elementbeneathseabed(pock marks would result if i = 1meaning that the sediment is insuspensiondue to upward seepageforces)
where r = radius of porous element on tip= 0.25 cm
where X = 3 or 6 (bounds range of Su fornormally consolidatedclay)
Table 4. Summaryof Lancelot deployments (continued)
Station 27
Station 33
Station 41
Station 43
Station 48
Station 63
Achieved maximum penetration(3.3 m), mud up to base of weightstand. Decay curve superb quality; equilibrium pore pressureinexceSsof hydrostatic indicating upward flow in situ. Expandedplot of pre-insertionaccelerationsand differential porepressureshow that the system is capableof recordingwaveeffects in real-time even at great depth.
Achieved maximum penetration,but probe partially pulled out 3times. Initial decay curve excellentquality; indicateshydrostaticpore pressuresprobably prevail. Other decay curvesillustrate the effect of partial remoulding of the sedimentwherein height of pore pressurespike is attenuated(correspondingto a reduction in undrainedshearstrengthfrompeak to remoulded); equilibrium pore pressureregime markedlychangeddue to collapseof sedimentfabric.
Achieved maximum penetration;very good station-keeping.Equilibrium pore pressureincreasing, probably due to settlingof Lancelot as a result of consolidationbeneaththe weightstand. The very rapid pore pressuredissipationfollowinginsertion suggeststhat this is possiblewithin the period thetool was in the bottom. Tentative assessmentof in situequilibrium pore pressureis slightly in excessof hydrostatic.
Achieved maximum penetration;extremely rapid pore pressuredecay to a hydrostaticvalue is indicative of silt; no excessequilibrium pore pressures,indicating that pore fluids are notmoving. Again, consolidationbeneathweight standaffects long-term pore pressureregime, even 3.3 m below.
Differential pressuretransducerrecalibratedshowedinsignificant zero drift, no span changeeven though previousdeploymentshad exceededtransducercapacity. Weight standstoppedpenetrating0.5 m from maximum; gravelly sandwith clayon strengthmember suggestshard bottom. Tip slightly bent;lifting shacklebent suggestingdifficult pullout. Porepressureis immediately on negative side after insertion,indicating dense sedimentattempting to increasevolume duringshear (sand or fine gravel). Equilibrium pore pressureinexcessof hydrostatic suggestingupward flow (relict of shearin densematerial?)
Lancelot refusal at minimum penetration, fell over on side;seconddrop had same result. Hard bottom.
53
Summaryof Lancelot results
The instrument is capableof measuring,the parametersit was designed
for, namely the pore pressureresponseduring consolidationaround the tip
following shear insertion, and if left for the appropriatelength of time, the
in situ equilibrium pore pressure.Previous work has demonstratedthat
predictionsof permeability from the Lancelot decay curves compare favorably
to laboratorypermeability tests. The tool can operate in any water depth,
given stable station-keepingand is limited only by the stiffness of the
sediment itself. The instrumenthas performedexceptionallywell in various
sediment types and further developmentis recommended.
Equilibrium pore pressuresin excessof hydrostatichave been shown to
exist at Stations 27, 41, and possibly 48 which suggestthat pore fluids are
moving upward, making the overlying sedimentsmore bouyant. No hydraulic
gradient gradientsapproaching1 were measured,which would indicate a highly
unstableor "quick" condition in situ wherein the gravitational forces exerted
by the surficial sedimentsis balancedby the upward seepageforces. Erosion
would occur rapidly in such a zone, resulting in an open vent or pock mark.
54
DREDGING [LFJ]
Introduction
The dredging operationfor Hudson 91020 cruise was plannedfor two
locations; a) the Fogo Seamounts,and b) a deeply submergedridge south of
Flemish Cap. In the original plan 3 days were reservedfor the dredging
operations,with an additional day for seismic work around the Fogo s・。ュッオョエセN
Purposeof the dredging
Fogo Seamounts
The Fogo Seamountsrepresentone of the most poorly known geologic
features locatedon the SouthwesternGrand Banks slope and rise. The
bathymetricchart of the Newfoundlandmargin, map 802-A, 1990 edition, shows
only two seamountspresent,with tops shallower than 4000 and 3000m
respectively. In contrastAGC bathymetricand seismic data show the presence
of severalgroups of seamounts.
The seamountsfrom regional geologic interpretationwere thought to be
formed by igneous rocks, which constructedsubmarinevolcanoes.Thevolcanoes
. are locatednear or over a zone interpretedto representa transcurrentfault
zone formed during separationof the North American and African continental
plates as continentalplates drifted apart, giving rise to the North Atlantic
oceanbasin. The age of the volcanoes is unknown, as is their composition.
Two theorieswere proposedfor the.origin of Fogo Seamounts.According to
the first one, all seamountsoccuring along this tectonic zone are of similar
age, which if verified ,would confirm that the seamountsare a product of
continentalplate readjustmentduring final separationof North American and
Europeancontinentalplates. Such readjustmentis known to occur during the
middle Cretaceous.Another hypothesesproposedis that the seamountsare a
trace of a leaky transform fault. In the latter case the age of the seamounts
should progressivelydecreaseeastward.
Only a few transformmargins are known, where tectonics is associated
with volcanic activity. Considerablegeophysical information has been
accumulatedon the southernGrand Banks margin about its geology and deeper
crustal structure. For this reasonthe Fogo Seamountswere suggestedto the
OceanDrilling Project as an area for more intensive study of a volcanic
55
transformmargin. A drilling proposalwas submittedto ODP in this respectby
Tucholke and Jansa.
Thus the dredging operationhad as an additional goal to provide a site
survey, comprising both seismic and bathymetricdata over the seamounts,and
initial information regarding seamountcomposition for better planning of the
proposeddrilling operation.
Submergedridge south of Flemish Cap
The ridge was discoveredduring a reflection seismic survey of Grand
Banks margin. The water depth to the ridge has been estimatedto be about 3812
m, with the ridge protruding about O.8sec (two -way travel time) above the
sea-bottom.It was speculatedby S.Srivastavafrom seismic data compilation
that the ridge trends approximatelyNE and might be of similar origin to the
serpentiniteridge sampledwest of Galicia Bank. Since the areaoff Flemish
Cap is an other area proposedby scientistsfrom Canada, France and England
for studiesof continentall oceancrust transition, with the proposal
submitted to ODP, it was timely to attempt to obtain samples from the ridge to
determine its composition. During planning of the cruise one day of dredging
at the ridge site was substitutedinto the cruise program in place of a third
day at the Fogo Seamounts.
Results
Fogo Seamounts
Site survey of the area including transectsacross the seamountsprovided
additional information about shape, height and distribution of seamountsin
the surveyedarea. From the 3 days plannedfor dredging and seismic operation,
one day was lost for SAR and a simultaneousstorm.
During the one and a half days available three dredgeswere accomplished.
Dredge 056:
The first dredge due to the time and weather limitation was selectedon a
smaller seamountat 42 10.314 N, 52 54.l4W. The dredge was located on the
northern side of the seamountat a water depth of 4575m and dredging was
terminatedat about 3660m. The dredge came to the surfaceoverturnedand empty
resulting from an early break of the weak-link.
56
Dredge 057:
The dredge was locatedat 42 10.15N and 52 51.23. A steepslope of a
seamountbetween2180-1960 fathoms was selected.The dredge came up empty,
with surfaceof the dredge smearedwith brownish and yellowish silty mud,
similar to that sampled in cores on the Grand Banks slope. The yellowish silty
mud has not beenpreviously observed, and as showedby the third dredge the
mud most probably representedhighly alteredvolcanic rock.
Dredge 058:
The dredge was located on the southernside of a seamountlocatedat 42
9.547N and 53 3.77lW. Water depth at the dredge site was approximately4538 m.
Fifty kg of rock fragments were recoveredwhich consistedof cemented
volcaniclasticgravel, possibly one fragment of basaltpillow lava and a
variety of erratics. The volcaniclasticsappear to form beds of 20 -30 cm in
thickness. The upper surfaceof the rock fragments is coatedby a severalmm
thick Fe/Mn crust, which in placeshad 。 セ エ 。 」 ィ ・ 、 calcitic worm tubes. The layer
immediately underlying the Fe/Mn crust, up to 10 cm thick, is weatheredwith
the rock more fragile and yellowish colored. The similarity in thicknessand
texture of volcaniclasticsblocks suggestthat they all representfragments of
a single broken bed.
The preliminary, on board analysesof the volcanic material suggeststhat
it is gravel-sizedvolaniclasticswhich form an apron around the volcano. The
volcanics are sand to gravel size, subrounded to angular in shape, light grey,
minor pinkish and/or medium dark grey, and cementedby zeolites and calcite.
Some are vesicular, with vesiculesfilled by zeolites. Freshvolcanic glass is
rare. A few larger clasts observed(up to 4 cm in size) resemblepumice of
basalticmaterial. The volcaniclasticmaterial seems to be dominatedby
fragments of trachyte, with minor amounts of rhyolite and basalt. A more
detaileddescriptionawaits laboratory studieswhich will include REE and
isotope studies to learn about the magma source. At this stage it is uncertain
if enough fresh glass is presentfor absoluteage determination.
The dredging operationat Fogo Seamountsis consideredto fulfil in part
the initial expectations.A short cruise fully devoted to the study of Fogo
Seamountsshould be consideredfor 1992-1993year.
57
.\
Ridge at the southernside of Flemish Cap:
The ridge was locatedquickly and effectively, after steamingfor 1/2
hour parallel with the seismic line provided by Srivastava.However, a quick
bathymetric survey showed that the ridge is differently oriented than
indicatedby Srivastava, thus requiring further bathymetric survey of the
ridge. This delayed the begining of dredgingby more than 1 hour.
Dredge 070:
Location 45 55.07N and 45 15.463 W, on WNW side of the ridge. Dredging
startedat 1646 fathoms. The dredge recoveredabout 100 kg of rocks.The
preliminary analysesshowed that except for two small fragments, all rocks
were erratics. The two fragments of yellowish weathering, poorly sorted,
poorly cementedsandstone,with one side thickly coatedby Fe/Mn crust are
consideredto representin situ rock. Since cementedsandstoneon the shelf
are no younger than early Tertiary-late Cretaceous,it is assumedthat the
sandstonecovering the slope of the ridge is of a similar age.
Dredge 071:
Location: 45 52.486N and 45 12.574 W. The dredge site is located on the
oppositeside of the ridge from dredge 070, to test the hypothesisthat the
ridge may representa tilted block of continentalbasement.
Dredging operationwas prematurelyaborteddue to the malfunction of a
pinger. The dredge came up overturned,but containedabout 250 kg of erratics.
One fragment, about 2 cm in size, of a sandstonesimilar to that dredgedby
dredge 070 was found betweenrock clasts
Most erraticshad the basal part of the cobblesburied not deeper than
severalcm below the sediment/waterinterface. The overturneddredge plowed
like a sled over the surfaceof the sedimentand picked up scatterederratics.
Since the dredging was prematurelyterminatedthe compositionof rocks on the
southeasternslope remains uncertain, although the single sandstoneclast
suggeststhat it may be similar to the northwest side.
Any conclusionsdrawn from the dredging of the deep ridge off Flemish Cap
is speculative,due to minimal evidenceobtained. Probably most valuable
58
. J
information obtained is from survey of the dredging sites. According to this
survey the ridge is NE orientedand representcontinuationof the ridge 46N-
45W protruding southwardfrom Flemish Cap. If the sedimentdredgedat site 070
proves to be in situ, that would strongly suggestthat the ridge represents
continentalbasementblock rotatedas result of a rift tectonics in this area.
However, more accurateinterpretationof the material has to await shore based
study.
Comment ondredging operation.
The ship's personnelunder the leadershipof captainL.A. Strum skilfully
masteredthe dredge operation. R.Murphy, AGC was instrumental in guiding the
dredge during dredging operationand in overseeingthe whole processof
getting the dredge ready for the operation.
Shortcomings
I was surprisedto find out after ship left for the cruise, that there is
no load-pin for dredge-blocktension-meter.This oversight decreasedour
ability to guide the dredge during dredging operation and contributedto the
lower successof the dredging operation. It is reccomendedthat the load-pin
be obtainedand a tension read-outdisplay be provided for the operator in the
forward laboratory.
59
DEBRIS FLOWS IN THE ALBATROSS CORRIDOR [JAB]
Objectives:
Debris flow depositson continentalslopeshave been found to be of increasing
importancewithin the slope/riseaccretionprocessbut few studieshas been conducted
on their sedimentologicalnature and down slope changes.No detailedstudieshave been
made of the sedimentologyof debris flows on the formerly glaciatedsoutheastCanadian
margin.
Previous SeaMARC data. show a near-surfacedebris flow complex on the Scotian
slope close to the Albatross well site, that feeds into a channel systemwhich was
delimited using GLORIA and 3.5kHz data. The primary objectives of the six days spent
on the Scotianmargin were to map a single channelwithin this systemusing 3.5kHz,
airgun seismic and Huntec to allow a quantitativestudy of the debris flow and to see
morphological changesboth down and across the channel. The coring program was to core
both levee and debris flow sites in order to link the morphology and sedimentary
processesdown its length. The secondobjective was to ground truth the GLORIA data;
to see its correlation to the surface and subsurfacesediment facies, and in
particular to find the origin of the acousticbright areaswhich have been previously
assumedto be a direct indicator of the most recent debris flow. This ground truthing
of the data has now been found to be essentialbefore firm interpretationsof GLORIA
can be made, due to the systemssubsurfacepenetrationand the realisationin recent
years of the complex interactionof low (1 - 12 kHz) frequency soundwithin the upper
20m of the sedimentcolumn. Thus two cores with correspondingcamerastationswere
plannedwithin the two prominent acoustic facies seenon GLORIA.
Results:
Sevenpiston cores, one box core, one gravity core and one van-veengrab.were
taken within the area, giving a total length of core of 53.7m. The locations of these
are shown on fig. 4 along with a limited interpretationof the GLORIA mosaic and the
seismic lines run. A total of 1500 km of seismic were run in the area. Weather
conditions permitted the use of the Huntec only on days 167 and 168. Three camera
stationswere performedyielding a total of fourteen shots. The velocimeterwas run on
all the cores as was the complete suite of physical propertiesavailable on board.
60
Discussion:
The seismic data of the 163/164 was primarily used to locate the channel and to
enable a down channel line to be run on subsequentnights. This down channel line
shows the existenceof at least two previous debris flows occupying the same channel
system thus showing a complex flow history within the channel. Towards the end of the
down channel section there was erosion seen in the seismic data which in the lower
reachesof the channel exposedan older debris flow. This led to some confusion in
interpreting the 3.5kHz data. Once this erosionwas confirmed by coring, the survey
moved on to a detailed survey of the channel, which will provide details of the
volume, morphology of the debris flow and also the form of the existing channel system
down which it flowed. This will also allow the extent of the erosion to be estimated.
This erosion increasesdown slope and at the lower limits of the flow has caused
substantialerosionmaking identification of the terminationpoint difficult.
The two cores which will be primarily used for ground truth GLORIA are shown on
(figure 5). Core 003 showed layers of interbeddedsilty mud with little sandpresent,
correspondingwell with initial interpretationof the dark facies as not having a
debris flow origin. The camerastation at this site failed and another stationwas
performedbut although this did not correspondexactly to the cored station it
remainedwithin the correct GLORIA facies. The secondcore 014 (see fig 5) was taken
within an acousticallybright area and was found to contain numeroussand laminae and
sand filled burrows within the trigger core which are the probablecauseof high
backscatterin the bright area. A camerastationwas successfullyperformedhere. The
initial assumptionof the bright acoustic facies on GLORIA representingdebris flows
was proved to be wrong from the evidenceof this core and the others taken within the
area. The more likely situation is that the bright areasrepresentonly near surface
sandwhich may have been depositedby the large erosionalevent seenon the lower
slope, which mayor may not be related to the debris flow.
61
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62
Figure 5: Core descriptionsemphasisinggrain size distribution from the Albatross
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63
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EVALUATION OF THE THERMAL NATURE OF ST. PIERRE SLOPE SEDIMENTS [MLM]
Objectives
The primary objectiveof the St. Pierre slope (Fig. 6) thermal study is to establish
the nature of the local sedimentarytemperaturegradient. This data is required to
betterconstrainthe gas hydratestability zone along the St. Pierre slope. To this end
a marine thermal probe belonging to Memorial University was used to measure both
subseafloortemperaturesand thermal conductivity.
Methods
The "Marine Thermal Probe HFl60l" (Fig. 7) belonging to Memorial University is an
in situ violin- or Bullard-typeheat-flowprobe. It is capableof successivelymeasuring
the temperatureand thermal conductivity of marine sediments. For the St. Pierre slope
study the probe was configured for a 5 mpenetrationwith thermistors locatedat 0.35 m
intervals.
Thermistorsare temperaturesensitiveresistors. Accuracy is limited to about +/-
2 mK. As the ambient temperatureof a thermistordecreases,its internal resistance(R)
increases. Resistancesare calculated for each thermistor by passing a current (i)
through each thermistor and measuringthe voltage (V) required to maintain a constant
current. Basically, resistance(R), voltage (V), and current (i) are related by the
expression,
R-V/i.
The thermal probe is an autonomous, cable lowered device. The thermistors are
strungwithin a thin stainlesssteel sensortube supportedby a large diameterstrength
member. The instrumentpack, computerand computerbatteriesare housedin an aluminum
cannistermade pressuretight at 1 atm. A secondcannistercontainsa 28 V rechargable
batterywhich supplies the power for the sensorstring and for the thermal pulse. Both
cannistersare supportedwithin a stainlesssteel instrumenthousingmountedat the top
of the strengthmember.
The probe is capableof multiple lowerings and was "pogo-sticked" from station to
station. To achieve statisticalreliability, each stationwas penetratedthree times.
The systemwas preprogrammedfor a sequenceof ッ ー ・ イ 。 エ ゥ ッ ョ ウ セ Interogationof an internal
motion sensor informs the probe computer
64
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Figure 6 Geomorphologyof St.Pierre slope. Location of 90015SARsidescansonar zonesZI and Z2 are shown.
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Figure 7
MARINE THERMAL PROBE HF1601
1 ELECTRONICSCYLINDER2 BATTERY CYLINDER3 HYDROPHONE4 MAIN MANIFOLD5 SECONDARY MANIFOLD6 sセnsor TUBE7 STRENGTH MEMBER8 STABILIZERFINS9 TAPEREDCYLINDER CAPS10 SHACKLE POINT11 INSTRUMENT HOUSING
bb
that the probehas penetratedthe sedimentsand is stationary. Once stationary,voltages
are recorded at 15 sec intervals by the computer. The initial nine (9) minutes of
recording is devoted to thermal gradient measurememt. At the end of the nine minute
interval a heat pulse is generated along the thermistor string and the thermal
conductivity, via decay of the heat built-up within the sensorstring, of the sediments
is measuredover a period of nine (9) minutes.
'Results
Data is recorded·in hexadecimal format and must be processedon shore using a
calibration curve for the thermistor string. Immediately following the cruise,
processingwill begin at Memorial University.
67
LINEATIONS
MACRO-FAILURESMICRO-FAILURE5l セ r ア e G
RIOC,E'5
HEAT FLOW STN
POCKMARKS
[[[[] ScouRED
e-I UNDISTUR&D
i セ セ セ i
i セ i
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FIGURE セ G Z Preliminaryintrepetationof 90015 SAR sidescan sonar data.Locationsof heat flow stations are shown with triangles.
OG
,,
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, .
• 0
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セ Pockmarks セ Thin rotationalslump
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セ MajordeMs Rows
."ONセ 3.5kHz sub-bottompro61e
® PistonC0f9
• In-situgeotechnicalmeasurement
o Heat-HowstaUon
FIGURE q: Geomorphology of flute zone showing location of pistoncores, in-situ geotechnical measurements and heat-flow stations.
STATIONS EVALUATED:
A total of ten (10) stations on the St. Pierre slope (Figs. 8 and 9) were probedover a 3.5 day period. Water depths varied from 530 to 1600 m. Seismic profiles atthermal probe locations are shown in Figs. 10-17 following p. 78.
TP1 90020-016Objectives: SAR-Zl-6302-04:31 (Fig. 10). Undisturbedsedimentsat 540 mwater depth.Sporadic pockmarks occur in vicinity. Strong surface reflector underlain by 5 macoustically transparentsediment. Below 5 m sedimentpoorly stratified to chaotic.Results: Data recorded, processingin progress.Technical problems: NoneOther data at same location: Core 84003-13 appears to penetratesame surface unit.91020 seismics1702048-1702052. Multichannel seismics 3420945 is 0.75' N of TP1.
TP2 90020-017Objectives: SAR-Zl-600l-04:58 / SAR-Zl-5403-ll:43 (Fig. 11). Undisturbedsedimentsat580 m water depth. Some pockmarks in vicinity, some minor scouring. Strong surfacereflector underlainby moderately-stratifiedsediment.Results: Data recorded, processingin progress.Technical problems: NoneOther data at same location: Cores 84003-14 and 84003-16. 91020 seismics 1700258.Multichannel seismics3410235 and 3421010 are 0.75' Sand1.5' N of TP2.
TP3 90020-018Objectives: SAR-Zl-6002-6:20 / SAR-Zl-5503-l3:05 (Fig. 12). Undisturbed, pockmarkedslope shoulder at about 670 mwater depth. Sedimentshere are very well stratified.Upper unit, approx. 10 m thick, shows a relative acoustic transparency.Results: Data recorded, processingin progress.Technical problems: Autonomoussystemshutdownafter completionof TP3, possibly duringmove to next station. Probewas recoveredand restarted. Insufficient time was left inthe day to complete stationwhich was delayeduntil following day.Other data at same location: Same facies examinedby GeotechnicalModule 900l5-HMG2,90020-LAN3, Core 90015-09. 91020 seismics 1700333. Multichannel seismics 3430010 is1.0' S of TP3.
TP4 90020-030Objectives: SAR-Zl-6002-06:43/ SAR-Zl-5503-l3:35 (Fig. 13). Disturbed zone at about800 m. Bordered on three sides by thin rotational slumps, zone may serve as a runoutchannel. Approximately 100 m deeper than TP3. Surface unit penetratedat TP3,approximately10 m thick, is completely removed at TP4.Results: Data recorded, processingin progress.Technical problems: NoneOther dataat same location: 91020 seismics1700342and 1710547. Multichannel seismics343015 is 0.5' S of TP4.
TPS 90020-031Objectives: SAR-Zl-5202-20:30 (Fig. 14). Deep (in excessof 30 mof sedimentremoved)erosional (slide?) scar. Slope is very steep (>10°) so should be relatively free ofdisturbedsurficial sediment. Water depth is 800 m.Results: Data recorded, processingin progress.Technical problems: None
68
)
Other dataat same location: 91020 seismics1710557, 1721046and 1730319. Multichannelseismics 3430020 is 0.5' S of TP5.
TP6 90020-032Objectives: SAR-Z1-6003-07:27(Fig. 15). Disturbedzone at the baseof slopepenetratedby TP3 and TP4, water depth 940 m.Results: Data recorded, processingin progress.Technical problems: During extraction from first lowering, excesswire caught on theinstrumentbody are strongly twisted the manifold connecting the sensorstring to theinstrumentpack. During the secondlowering, water leaked into the sensorstring andshorted-out the thermistors. The twisting also damaged the wiring connectirig thethermistor string to the electronics. No damage was suffered by the electronicsthemselves. Probe was recoveredand repaired.Other dataat same location: 91020 seismics1700357and 1710644. Multichannel seismics3430020 is 0.5' N of TP6.
TP7 90020-039Objectives: Undisturbedsedimentsat 1360 m water depth (Fig. 16). Surfacecorrelatesto deepersedimentat about SAR-Zl-00:30. Upper unit is acoustically transparentwitha prominentsurfacereflector. Deeperreflectorsare good. Station is upslopeof a zoneaffectedby small-scaleslumping.Results: Data recorded, processingin progress.Technical problems: Hydrophonenot functioning. Instument operational.Other data at same location: Core 90015-2, 90020-LAN2, GeotechnicalModule 900l5-HMGl(runs through disturbedzone onto undisturbed, upslope sediments), SeaMARK 171-18:30.91020 seismics1711846.
TP8 90020-045Objectives: SAR-Z3-7302-02:57(Fig. 17). Disturbed sedimentsat 1600 m water depth.Results: Data recorded, processingin progress.Technical problems: Hydrophonenot functioning. Instument operational.Other dataat same location: GeotechnicalModule 900l5-HMG4 in same surficial material.91020 seismics1741316.
TP9 90020-046Objectives: SAR-Z3-7302-02:34Results: No data recorded.Technical problems: Instrumentapparentlyshutdownbeforepenetration,no datarecorded.Becausehydrophonewas not working, the systemshutdownwas not observeduntil the probewas recovered.
TPIO 90020-047Objectives: SAR-Z3-7302-02:13Results: No data recorded.Technical problems: This station followed TP9. Instrument remained shutdown, no datarecorded.
69
)
TABLE 5: Summaryof thermal probe stationson the St. Pierre slope.
HEAT FLOW CRUISE SITE WATER LATITUDE LONGITUDE SAR REFSSTATION REFERENCE DEPTH (m) CRUISE 90015
LOCATION (NORTH) (WEST)
TPl 91020-016 1 535 44 50.250 55 44.721 6302-04:30
2 543 44 50.297 55 44.900
3 537 44 50.337 55 45.071
TP2 91020-017 1 580 44 49.580 55 42.230 6001-04:57
2 580 44 49.583 55 42.186 5403-11:41
3 581 44 49.592 55 42.176
TP3 91020-018 1 670 44 47.406 55 39.668 6002-06:20
2 670 44 47.416 55 39.632 5503-13:05
3 670 44 47.396 55 39.672
TP4 91020-030 1 778 44 46.748 55 38.959 6002-06:43
2 778 44 46.755 55 38.955
3 778 44 46.737 55 38.956
TP5 91020-031 1 800 44 46.665 55 37.835 5202-20:30
2 805 44 46.680 55 37.836
3 798 44 46.713 55 37.803
TP6 91020-032 1 942 44 45.585 55 37.842 I 6003-07,27 I2 943 44 45.592 55 37.828
TP7 91020-039 1 1331 44 41.010 55 31.477 Adjacent
2 1360 44 40.982 55 31.500 to
3 1358 44 40.99 55 31.51 5202-00:30
TP8 91020-045 1 1600 44 37.46 55 42.28 7302-02:57
2 1604 44 37.46 55 42.26
3 1604 44 37.424 55 42.198
70
THERMAL PROBE DAY LOG:
JULIAN DAY: 170 (July 19)
CSS HUDSON 91020
RUN: NUM-1
11:15:0011:50:5412:04:0012:14:30
12:15:1912:35:30
12:38:3912:58:09
12:59:3713:18:29
13:25:20
14:20:0014:21:1514:28:0014:35:30
14:36:0014:56:54
_l14:58:2015:17:45
15:19:2515:39:53
15:49:2615:53:27
Probe systemsturned on.Probe in water.Begin equalizationat 505 mEnd equalization
TPl-l 91020-016-1at 535 m 44 50.250N 5544.721WPenetrationExtraction
TPl-2 91020-016-2at 543 m 44 50.297N 55 44.900WPenetrationExtraction
TPl-3 91020-016-3at 537 m 44 50.337N 55 45.071WPenetrationExtraction
Retrieve to 45 mdepth, tow to 91020-017.
Arrive on Station 91020-017Begin lowering probe from tow depth.Begin equalizationat 540 m.End equalization.
TP2-1 91020-017-1at 580 m 44 49.580N 55 42.230WPenetrationExtraction
TP2-2 91020-017-2at 580 m 44 49.583N 55 42.186WPenetration
-Extraction
TP2-3 91020-017-3at 581 m 44 49.592N 55 42.176WPenetrationExtraction
Recover thermal probe to surface.Probe systemsshutdown.
End of Run NOM-I: saved to HEATNOMl.DAT.
JULIAN DAY: 170 (July 19) RUN: NOM-2
16:26:0016:32:4116:46:4516:56:23
Probe systemsturned on.Probe in water.Begin equalizationat 640m.End equalization.
71
16:57:1117:17:54
17:19:0417:39:50
17 :.41: 5018:02:58
18:10:47
18:20:0018:22:0418:38:56
18:55:00due too
TP3-1 91020-018-1at 670 m 44 47.406N 55 39.668WPenetrationExtraction
TP3-2 91020-018-2at 670 m 44 47.416N 55 39.632WPenetrationExtraction
TP3-3 91020-018-3at 670 m 44 47.396N 55 39.672WPenetrationExtraction
Retrieve to 45 m depth, tow to 91020-019.
Arrive on Station 91020-019.Begin lowering probe from tow depth.Hydrophone ceasedtransmission.Recover probe.
Probe on deck. Systemswere shutdownwhile probe was autonomous,possiblyexcessivemotion during station move.
End of RUN NUH-2: saved to HEATNUH2.DAT.
JULIAN DAY: 172 (July 21) RUN: NUM-3
11:30:0511:35:0511:48:3512:01:00
12:02:0012:22:48
12:25:3712:46:43
12:51:??13:13:35
13:25:30
13:54:0013:55:0014:04:3014:15:12
Probe systemsturned on.Probe in water.Begin equalizationat 733 mEnd equalization
TP4-1 91020-030-1at 778 m 44 46,748N 55 38.959WPenetrationExtraction
TP4-2 91020-030-2at 778 m 44 46.755N 55 38.955WPenetrationExtraction
TP4-3 .91020-030-3at 778 m 44 46.737N 55 38.956WPenetrationExtraction
Retrieve to 70 m depth, tow to 91020-031.
Arrive on Station 91020-031Begin lowering probe from tow depth.Begin equalizationat 755 mEnd equalization
72
14:16:1714:37:08
14:38:0914:59:30
15:12:1015:32:50
15:44:07
16:09:0016:27:2916:22:1016:47:33
16:28:2716:47:33
16:50:2117:10:15
??:??:??17:30:00
TPS-1 91020-031-1at 800 m 44 46.66SN. 55 37.835WPenetrationExtraction
TP5-2 91020-031-2at 805 m 44 46.680N 55 37.836WPenetrationExtraction
TP5-3 ·91020-031-3at 798 m 44 46.713N 5537.803WPenetrationExtraction
Retrieve to 50 m depth, tow to 91020-032.
Arrive on Station 91020-032Begin lowering probe from tow depth.Begin equalizationat 895 mEnd equalization
TP6-1 91020-032-1at 942 m 44 45.585N 55 37.842WPenetrationExtraction
TP6-2 91020-032-2at 943 m 44 45.592N 55 37.828WPenetrationExtraction
Hydrophone transmissionstopped. Abort station.Probe systemsshutdown.Recover thermal probe to surface.
End of Run NUM- 3: savedto HEATNUM3. DAT .
JULIAN DAY: 173 (July 22) RUN: NUM.;.4
11:00:0011:24:0011:55:3912:06:10
12:07:2012:26:25
12:28:5812:49:17
12:50:21
Probe systemsturned on.Probe in water.Begin equalizationat 1285 mEnd equalization
TP7-1 91020-039-1at 1331 mPenetrationExtraction
TP7-2 91020-039-2at 1360 mPenetrationExtraction
TP7-3 91020-039-3at 1358 mPenetration
73
44 41.010N
44 40.982N
44 40.99N
55 31.477W
55 31.500W
55 31.51W
13:11:20
13:30:0613:40:11
Extraction
Recover thermal probe to surface.Probe systemsshutdown.
End of Run NUH-4: saved to HEATNUH4.DAT.
JULIAN DAY: 174 (July 23) RUN: NUH-5
13:16:0013:48:1414:21:2814:30:00
14:30:5514:50:22
14:51:3015:10:45
15:13:3015:33:34
Probe systemsturned on.Probe in water.Begin equalizationat 1555 mEnd equalization
TP8-1 91020-045-1at 1600 mPenetrationExtraction
TP8-2 91020-045-2at 1604 mPenetrationExtraction
TP8-3 91020-045-3at 1604 mPenetrationExtraction
44 37.46N
44 37.46N
44 37.424N
55 42.28W
55 42.26W
55 42.198W
15:36:0015:56:0016:07:29
Retrieve to 1500 m depth, tow to 91020-046.Arrive on Station 91020-046Begin lowering probe from tow depth.
16:09:4016:29:11
16:31:1016:50:20
16:52:5717:11:40
TP9-1 91020-046-1at 1586 mPenetrationExtraction
TP9-2 91020-046-2at 1591 mPenetrationExtraction
TP9-3 91020-046-3at 1586 mPenetrationExtraction
44 37.052N
44 37.049N
44 37.048N
5542.783W
5542.746W
5542.761W
17:14:00
17:50:1118:07:39
Retrieve to 1475 m depth, tow to 91020-047.
Arrive on Station 91020-047Begin lowering probe from tow depth.
18:10:2218:30:15
TP10-1 91020-047-1at 1596 mPenetrationExtraction
TP10-1 91020-047-2at 1602 m
74
44 36.351N
44 36.397N
55 43.640W
55 43.604W
18:31:4918:50:50
19:19:39
??:??:??
PenetrationExtraction
Recover thermal probe to surface.
Probe systemswere shutdownwhen recovered. After 15:33, before 16:09.
End of Run NUM-5: saved to HEATNUM5. DAT.
TABLE 6; Other data at same locations as heat flow stations.
91020 91020 91020 91020 90015 90015 90015 84003HEAT CORES LAN SEISMIC SAR CORES HMG CORESFLOW
STATION
TP1 1702048- 6302-04:31 0131702052
TP2 1700258 6001-04:58 0145403-11:43 016
TP3 LAN3 1700333 6002-06:20 009 HMG25503-13:05
TP4 1700342, 6002-06:431710547 5503-13:35
TP5 1710557, 5202-20:301721046,1730319
TP6 170357, 6003-07:271710644
TP7 LAN 2 1711846 002 HMGl
TP8 1741316 7302-02:57 HMG4
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91020 10009 10015615 10.0 41.330 -61.710 4136 .1:5 :5.9 7.1S9 300 215 100156!5
91020 1'009 1001566 10.0 41.330 -61.710 4136 .20 :5.4 7.415 270 2E1 1001566
91020 10009 1001567 10.0 41.330 -61.710 4136 .40 !5.6 7.1S15 240 215 1001567
91020 1'009 100:56E1 1.0.0 41.330 -401.710 4136 ••0 15.4 W d セ ゥ Q !240 !2Q 10"S4Q
91020 1'009 100:569 10.0 41.330 -61.710 4136 .80 3.1 7.37 400 215 1001569
91020 1'009 1001570 10.0 41.330 -61.710 4136 1.00 3.7 7.::U 290 29 100:570
Crul.. Stn/Typ. In Core L.at L.ang z pE pH St SC4 NH4 In
'1'1020 POO'l' 1001571 10.0 41.330 -61.710 4136 1.150 15.1 7.29 270 28 100571
91020 P009 1001572 10.0 41.330 -61.710 4136 2.00 15.4 7.32 260 28 1001572
'Pl020 POO'l' 1001573 10.0 41.330 -61.710 4136 2.eo e.3 7.el 370 28 100573
91020 P009 looe74 10.0 41.330 -61.710 4136 3.00 4.0 7.27 340 2B 100e74
'1'1020 GO11 100157e 1.3 41.280 -61.seo 4306 .00 5.9 7.39 380 :ze 100S7S
91020 BOll 100e76 1.3 41.280 -61.8eo 4306 .oe e.7 7.ee 3BO 2S 100S76
'1'1020 GO11 1001577 1.3 41.280 -61.seo 4306 .10 6.e 7.31 410 2B 100S77
91020 BOll 100e78 1.3 41.2S0 -61.seo 4306 .115 6.B 7.2e 460 2S 100e7B
'1'1020 GOll 100e.,.., 1.3 41.280 -61.BSO 4306 .20 6.B 7.31 4BO :ze 100S79
91020 GO11 100580 1.3 41.2S0 -61.Beo 4306 .40 6.1 7.33 410 2S 1001580
'1'1020 GO11 100eBl 1.3 41.2S0 -.l.seo 4306 .60 e.4 7.4e 4SO 28 100SSl
91020 BOll 100eS2 1.3 41.2S0 -.1.S150 4306 .80 e.4 7.41 320 28 1001582
91020 GOll 100S83 1.3 41.2BO -.l.seo 430. .94 e.e 7.3e 3S0 29 100eS3
'1'1020 T012 1001584 •• 41.290 -61.810 4:S42 .00 e•• 7.:se 23e 2B 10015B4
'1'1020 T012 1001!lB15 .6 41.2'1'0 -61.810 4:S42 .00 6.:S 7.27 e40 2B 10055
91020 T012 100eB6 .6 41.2'1'0 -61.Bl0 4342 .10 6.4 7.1e 420 2B 100e86
'1'1020 T012 100eB7 .6 41.290 -61.Bl0 4:S42 .1e 6.6 7.20 4:S0 :ze 100eS7
91020 T012 100e89 .6 41.290 -61.810 4:S42 .20 6.2 7.21 410 2B 100SSB
'1'1020 T012 10015B'P .6 41.2'1'0 -61.Bl0 4:S42 .40 S.:S 7.34 3:S0 28 100SS'I'
'1'1020 T012 10015'1'0 •• 41.2'1'0 -.1.810 4:S42 .60 15.'1' 7.37 270 28 100\590
91020 P012 1001!l91 4.8 41.2'1'0 -61.Bl0 4342 .00 6.1!I 7.2B 430 28 .03 1001!l91
91020 P012 1001!l92 4.8 41.290 -.1.810 4:S42 .0\5 6.6 7.39 :S20 28 .06 1001!l92
91020 P012 1001!l93 4.8 41.290 -61.Bl0 4342 .10 5.7 7.42 :seo 28 .13 100593
91020 P012 1001!l94 4.9 41.290 -.1.910 4:S42 .15 1!I.B 7.47 340 2B 1001594
91020 P012 1001595 4.9 41.290 -61.Bl0 4342 .20 5.6 7.63 390 29 1001595
91020 P012 10059. 4.9 41.290 -61.810 4342 .40 5.7 7.36 300 29 100159.
'91020 P012 100597 4.8 41.290 -61.Bl0 4342 .60 5.6 7.36 460 28 1001597
91020 P012 100598 4.8 41.290 -61.910 4342 .90 15.3 7.21 460 28 .18 1001598) 91020 P012 1001599 4.8 41.2'1'0 -61.Bl0 4342 1.00 15.:s 7.27 420 28 100S99
91020 P012 100600 4.9 41.290 -61.810 4:S42 1.eo 15.3 7.24 420 2B 100600
91020 P012 100601 4.9 41.290 -61.Bl0 4342 2.00 4.9 7.2B 1520 2B .:S1 100601
91020 P012 100602 4.8 41.290 -61.810 4342 2.150 4.3 7.115 430 28 .215 100602
91020 P012 100603 4.B 41.290 -.1.810 4342 :s.00 4.9 7.09 28 100603
91020 T013 100604 2.0 41.840 -62.330 :S4S0 .00 15.9 7.1!13 400 28 100604
91020 T013 10060e 2.0 41.840 -62.:S30 34eo .oe 6.2 7.eo 440 28 100605
91020 T013 100606 2.0 41.840 -62.:S30 34150 .10 6.0 7.80 400 28 100606
91020 T013 100607 2.0 41.840 -62.330 :S4eo .1e 6 •.0 7.83 400 28 100607
91020 T01:S 100608 2.0 41.840 -62.3:S0 341!10 .20 6.1 7.64 :S80 28 10060B
91020 T01:S 100609 2.0 41.840 -62.330 34eo .40 e.9 7.99 3150 28 100609
91020 T013 100610 2.0 41.840 -62.330 34eo .60 e.7 7.86 380 28 100610
91020 T013 100611 2.0 41.840 -62.3:S0 34eo .77 e.7 7.41 440 :ze 100611
91020 T013 100612 2.0 41.840 -62.330 3450 1.00 e.l 7.77 390 28 100612
91020 T013 100613 2.0 41.840 -62.330 34eo 1.eo 4.4 7.65 490 28 100613
91020 ,.013 100614 7.4 41.840 -62.330 34eo .02 e.:S 7.37 eoo 28 .06 100614
91020 P013 10061e 7.4 41.840 -62.330 :S4eo .06 e.4 7.46 470 28 .07 100615
91020 ,.013 100616 7.4 41.840 -62.330 34150 .10 15.3 7.46 eeo 28 100616
91020 P013 100617 7.4 41.840 -62.330 :S450 .17 4.7 7.38 1570 28 .18 100617
91020 ,.013 100618 7.4 41.840 -62.330 3450 .20 e.2 7.e8 eeo 28 10061B
91020 P013 100619 7.4 41.840 -62.:S30 34eo .40 e.2 7.36 670 28 .2e 100619
91020 ,.01:S 100620 7.4 41.840 -62.330 :S4eo .60 2.7 7.17 720 28 100620
91020 ,.013 100621 7.4 41.840 -62.330 34150 .80 2.:S 7.12 670 28 .32 100621
91020 ,.013 100622 7.4 41.840 -62.330 34150 1.00 4.7 7.13 700 28 100622
91020 P013 100623 7.4 41.840 -62.330 34eo 1.eo e.4 7.27 700 2B .40 100623
91020 P013 100624 7.4 41.B40 -62.:S30 :S4eo 2.00 2.e 7.07 600 28 .28 100624
91020 P013 1006:ze 7.4 41.840 -62.:S:S0 34eo 2.eo 4.6 7.08 4eo 28 .32 100625
91020 ,.013 100626 7.4 41.840 -62.330 34eo :s.00 4.e 7.28 28 .:se 100626
91020 T014 100627 1.6 41.789 -62.3\50 3e32 .00 6.4 7.37 :S40 28 100627
91020 T014 100628 1.6 41.789 -62.3150 3e32 .015 6.0 7.e2 :S90 2B 10062B
91020 T014 100629 1.6 41.7B9 -62.:seo 3e32 .10 6.0 7.49 390 28 100629
91020 T014 100630 1.6 41.789 -62.3150 :se32 .1e e.7 7.63 420 2B 100630
91020 T014 100631 1.6 41.789 -62.3eo 3e32 .20 e.9 7.60 4eo 28 100631
91020 T014 100632 1.6 41.789 -62.3eo 31532 .40 1!I.6 7.46 460 28 100632
'1'1020 T014 100633 1.6 41.78'1' -62.350 3e32 .60 e.7 7.44 2B 100633
'1'1020 T014 100634 1.6 41.7B'I' -62.3150 :se:S2 .78 e.4 7.34 2B 100634
'1'1020 T014 10063e 1.6 41.78'1' -62.3eo :S1532 1.00 4.e 7.e2 el0 2B 1006:S15
91020 T014 10063" 1.6 41.789 -62.350 31532 1.150 15.3 7.47 1540 2B 100636
'1'1020 P014 100637 2.7 41.78'1' -62.3eo 31532 .00 •• 0 7.215 4eo 28 .01 100637
ID L"t Lans z pE pH S1 904 NH4 ID 3
.,1020 P014 1006;S& 2.7 41.78" -62.:.l:50 :.ll5:.l2 .0:5 :5.8 7.6:.l 440 28 .01 10063891020 P014 1006:.l., 2.7 41.789 -62.:.l:50 :.l:5:.l2 .10 :5.4 7.:51 4:50 28 1006:.l991020 P014 100640 2.7 41.789 -62.:.l:50 :.l:5:.l2 .1l!! l!!.:5 7.:54 4BO 28 .06 100640
91020 P014 100641 2.7 41.78" -62.:.l:50 :.lS32 .20 l!!.:.l 7.60 4BO 28 100641.,1020 P014 100642 2.7 41.78" -62.350 :.ll532 .40 l!!.3 7.54 460 28 .13 100642
91020 P014 100643 2.7 41.789 -62.:.lS0 3l!!32 .60 5.1 7.38 500 28 100643.,1020 P014 100644 2.7 41.78" -62.3l!!0 3532 .80 l!!.3 7.51 570 28 .17 100644
91020 P014 100io4l!! 2.7 41.789 -62.3l!!0 3532 1.00 5.4 7.7i:S 570 28 10064:5
91020 P014 100646 2.7 41.789 -6:Z.:.l5O 3532 1.50 4.6 7.49 600 28 .24 100646
91020 P014 100647 2.7 41.789 -io2.:.lS0 31532 2.00 S.:.l 7.37 610 28 .31 100647
91020 P014 100649 2.7 41.789 -62.3l!!0 3l!!32 2.l!!0 l!!.2 7.215 610 28 .3l!! 10064B
91020 B028 100678 .3 44.684 -15l!!.S24 1:.l31 .00 6.8 7.16 :.lSO 28 100678
91020 802B 10067" .3 44.684 -:5:5.:524 1331 .Ol!! :5.3 7.32 440 28 100679
91020 B028 100680 .3 44.684 -1515.524 1331 .10 5.1 7.24 630 28 100680
91020 8028 1006S1 .3 44.684 -5:5.1524 1331 .1:5 6.0 7.27 710 28 100681
91020 B028 100682 .3 44.684 -515.1524 1331 .20 l!!.7 7.27 790 28 1006S291020 8028 100683 .3 44.684 -:55.1524 1331 .2l!I 5.7 7.33 840 28 100683
91020 11028 1001084 .3 44.684 -Sl!!.:524 13:.l1 .30 5.6 7.18 900 28 100684.,1020 T029 100722 .15 44.683 -:5:5.:526 1:.l34 .05 l!!.6 7.38 :570 28 .00 10072291020 T029 100723 .l!! 44.68:.l -Sl!!.:526 1334 .10 15.6 7.38 740 28 .00 100723.,1020 T029 100724 .:5 44.683 -1!lS.S26 1334 .1l!! l!!.6 7.49 820 28 .00 100724
91020 T029 10072l!! .l!! 44.6S3 -Sl!!.:526 1:.l34 .20 l!!.7 7.:50 840 28 .00 10072:5.,1020 T02., 100726 .5 44.68:.l -15:5.1526 1334 .30 l!!.7 7.33 849 2S .00 100726
91020 T029 100727 .l!! 44.683 -Sl!!.S26 1334 .40 5.4 7.:.l6 840 28 .00 100727.,1020 T02., 100728 .l!! 44.683 -:5:5.:526 1:.l34 .l!!0 l!!.6 7.:.lS 870 28 .00 .100728
91020 P029 100693 7.l!! 44.6B3 -:5l!!.l!!26 13:.l4 .05 5.9 7.6:.l 650 28 .44 100693
'1'1020 P029 100694 7.15 44.6B3 -:5:5.:526 1:.l34 .10 l!!." 7.:5B 630 28 .:54 100694
91020 P029 10069:5 7.:5 44.683 -:5:5.:526 1:.l:.l4 .20 :5.2 7.:54 :570 2:5 1.00 10069:591020 P029 1006.,6 7.:5 44.683 -:5:5.:526 1:.l:.l4 .:.l0 4.9 7.47 710 2:.l 1.20 100696
91020 P029 100697 7.!5 44.683 -S!5.!526 1334 .40 !5.1 7.!53 740 20 1.:.l0 100697.,1020 P02., 100698 7.:5 44.68:.l -:5:5.1526 13:.l4 .150 4.8 7.37 710 19 1.so 10069B
91020 P029 100699 7.!5 44.683 -:5:5.:526 1:.l:.l4 .60 :5.1 7.2:5 6:.l0 115 100699
91020 P02., 100700 7.!5 44.68:.l -:5:5.:526 1334 .70 4.9 7.!57 !5S0 14 100700
91020 P029 100701 7.:5 44.683 -!5!5.S26 1334 .80 4.8 7.2S S70 13 100701.,1020 P029 100702 7.15 44.683 -SS.:526 1334 .90 4.7 7.31 S70 11 10070291020 P029 10070:.l 7.S 44.683 -S15.!526 1334 1.00 4.8 7.29 S30 10 100703
) 91020 P029 100704 7.5 44.683 -155.526 1:.l34 1.10 4.8 7.21 !520 9 100704
91020 P029 100705 7.!5 44.68:.l -SS.S26 13:.l4 1.20 4.4 7.:.l0 500 a 1.80 10070:5
"1020 P02., 100706 7.5 44.683 -1515.1526 13:.l4 1.:.l0 4.6 7.42 570 7 10070/0
91020 P029 100707 7.5 44.68:.l -:55.:526 1:.l34 1.40 4.4 7.47 S150 6 100707
91020 P02'l' 10070S 7.15 44.6S:.l -S15.S26 1:.l:.l4 1.50 4.4 7.43 S:.lO 6 100708
91020 P029 100709 7.5 44.683 -SS.S26 1334 1.60 4.4 7.42 SSO 6 10070991020 P029 100710 7.5 44.68:.l -SS.S26 1:.l:.l4 1.70 4.4 7.36 S!50 6 10071091020 P029 100711 7.5 44.683 -SI5.S26 1334 1.S0 4.5 7.36 550 2 10071191020 P029 100712 7.S 44.68:.l -SS.S26 13:.l4 1.90 4.!5 7.41 SSO 2 10071291020 P029 10071:.l 7.5 44.683 -SS.S26 1:.l34 2.00 4.5 7.4S sao 1 100713
"1020 P029 セ P P W Q T 7.5 44.683 -SS.:526 1334 2.10 4.5 7.44 600 1 100714
91020 P029 100715 7.5 44.683 -SS.S26 1:.l34 2.20 4.5 7.41 S80 0 10071S"1020 P02" 100716 7.5 44.6S:.l -SI5.S26 1334 2.:.l0 4.6 7.42 570 0 10071691020 P029 100717 7.!5 44.68:.l -SS.S26 1334 2.40 4.2 7.40 500 0 10071791020 P029 100718 7.5 44.6S3 -SS.S26 1:.l34 2.150 4.2 7.S2 :530 0 2.20 10071891020 P029 100719 7.S 44.683 -SS.S26 1:.l34 2.80 4.6 7.66 420 0 10071991020 P029 100720 7.S 44.683 -SS.S26 1:.l:.l4 2.90 4.4 7.48 :.l90 0 10072091020 P029 100721 7.5 44.68:.l -:55.526 13:.l4 :.l.00 4.4 7.:.lS :.l60 0 10072191020 T040 1007154 1.4 44.727 -I5S.616 1062 .00 l!!.S 7.23 420 28 .00 100715491020 T040 1007S!5 1.4 44.727 -SI5.616. 1062 .05 4.9 7.21 480 28 .00 1007SS91020 T040 100756 1.4 44.727 -SS.616 1062 .10 5.1 7.23 570 28 .00 100715691020 T040 100657 1.4 44.727 -S15.616 1062 .20 5.1 7.23 600 28 .07 1006\5791020 T040 100658 1.4 44.727 -\55.616 1062 .40 5.4 7.41 620 2B .1!5 1006\5891020 T040 1007\59 1.4 44.727 -S15.616 1062 .60 5.4 7.12 620 2S .16 1007:5991020 T040 100760 1.4 44.727 -!5!5.6U. 1062 .SO 4.9 7.14 620 2S .28 10076091020 T040 100761 1.4 44.727 -:5!5.616 1062 1.00 4.6 7.1B 620 2S .32 100761
91020 T040 100762 1.4 44.727 -\5S.616 1062 1.40 4.9 6.93 600 28 .40 100762
91020 P040 100763 6.S 44.727 -:5\5.616 1062 .00 4.9 7.\5S 6\50 2S .2S 10076391020 P040 100764 6.S 44.727 -:5:5.616 1062 .0:5 4.9 7.30 670 28 .44 100764
91020 P040 10076!5 6.S 44.727 -:5:5.616 1062 .10 4.:.l 7.41 670 2:5 .B!5 10076S"1020 P040 100766 6.S 44.727 -:5:5.616 1062 .20 4.6 7.27 12 1.30 100766
ID Car. Lone WAter Temp z pE pH el 804 NH4 ID 4
.,1020 1"040 100767 6.B 44.727 -1919.616 1062 .40 4.4 7.33 620 12 loBO 100767
91020 P040 10076B 6.B 44.727 -1919.616 1062 .60 4.4 7.SS 1980 11 1 • .,0 10076B.,1020 P040 10076., 6.B 44.727 -SS.616 1062 .BO 4.4 7.49 6 2.00 10076991020 P040 lq0770 6.B 44.727 -SS.616 1062 1.00 4.4 7.SB 1920 2 2.30 100770'91020 P040 100771 6.B 44;727 -eS.616 1062 1.eo 4.1 7.4B 0 2.40 100771
91020 P040 100772 6.B 44.727 -ee.616 1062 2.00 4.1 7.43 400 0 2.70 10077291020 P040 100773 6.B 44.727 -ee.616 1062 2.:50 4.3 7.e6 390 0 2.90 100773
91020 P040 100774 6.B 44.727 -ee.616 1062 3.00 4.2 7.43 400 0 3.00 10077491020 P040 10077e 6.B 44.727 -ee.616 1062 3.60 4.e 7.48 400 0 3.20 10077S
91020 P040 100776 6.8 44.727 -se.616 1062 4.00 3.9 7.1S 3BO 0 3.20 10077691020 P040 100777 6.B 44.727 -ee.616 1062 4.eo 4.0 7.12 390 0 3.40 10077791020 P040 100778 6.8 44.727 -SS.616 1062 S.OO 1.9 7.26 470 0 3.60 10077B91020 P040 100779 ".8 44.727 -SS...I .. 10..2 S.SO 4." 7.37 390 0 3."0 100779
91020 P040 1007BO 6.B 44.727 -se.616 1062 6.00 3.4 7.32 440 0 3.70 1007BO.,1020 P040 1007Bl 6.B 44.727 -ee.616 1062 6.eo 4.1 7.119 4eo 0 3.BO 10078191020 P040 100782 6.B 44.727 -ee.616 1062 6.BO 4.4 7.20 400 0 4.00 1007B2'91020 B044 1007B3 .4 44.e31 -ee.624 190B .00 6.3 7.3e 360 2B .19 10078391020 8044 100784 .4 44.e31 -ell. 624 190B .Oll ll.4 7.ll2 3BO 28 .oe 10078491020 B044 10078e .4 44.e31 -ee.624 190B .10 e.l 7.36 400 2B .11 10078S91020 8044 100786 .4 44.e31 -ell. 624 190B • III 4.3 7.32 420 28 .16 1007B691020 B044 100787 .4 44.e31 -llll.624 190B .20 4.4 7.61 390 28 .1B 10078791020 B044 1007B8 .4 44.e31 -ee.624 190B .2!l 3.4 7.26 4110 28 .20 1007SB91020 8044 1007B9 .4 44.e31 -SI5.624 190B .30 e.l 7.4e seo 2B .27 100789
91020 B044 100790 .4 44.e31 -ell. 624 190B .3ll 4.4 7.23 2B 10079091020 B044 100791 .4 44.e31 -ell. 624 190B .40 4.6 7.31 720 2B .30 10079191020 B049 100798 .3 44.306 -e3.73B 13SS .00 ll.7 7.26 370 2B 10079B91020 B049 100799 .3 44.306 -S3.73B 13ee .oe 4.6 7.2e 430 2. 1007<;19
91020 B049 100BOO .3 44.306 -193.73. 13ee .10 e.e 7.1B 460 2B 100800
91020 B049 100BOl .3 44.306 -e3.738 13!le .1ll ll.ll 7.11 ll40 28 100B01
91020 8049 100802 .3 44.306 -S3.738 13lle .20 e.4 7.27 e60 28 100B02
91020 804'9 100803 .3 44.306 -e3.73B 13se .2ll e.7 7.3B e80 28 100B03
''1020 8049 100B04 .3 44.306 -e3.738 13ee .30 ll.4 7.0e 610 28 100B04
91020 13021 1006193 1.3 44.B43 -ee.7eo e16 4.15 .BO e.9 7.21 2B 1006113
91020 13021 1006114 1.3 44.B43 -ee.7150 ll16 4.15 1.00 e.7 7.1B 28 1006e4
91020 13021 l006ee 1.3 44.B43 -15ll.7150 e16 4.ll 1.20 ll.6 7.12 28 10061115
91020 13022 1006116 1.3 44.Beo -ee.7e7 4eo 4.e .00 4.0 7.26 2B 100615691020 13022 1006157 1.3 44.BllO -ee.7157 4150 4.15 .2!l 4.e 7.26 2B 1006117
91020 G1022 1006158 1.3 44.BSO -ell.7e7 4eo 4.e .SO e.7 7.24 2B 1006eB.,1020 G1022 l006e9 1.3 44.S!l0 -lle.7157 4eo 4.15 .7ll ll.7 7.11 28 1006119
91020 0022 100660 1.3 44.B!l0 -!lll.7!l7 4eo 4.ll 1.!l0 e.3 7.12 28 100660
91020 G1022 100661 1.3 44.B!l0 -ee.7e7 4!l0 4.!l 1.2ll !l.3 7.14 28 100661
91020 G1023 100662 1.0 44.BB!l -!lll.776 417 4.7 .00 e.2 7.24 28 100662
91020 13023 100663 1.0 44.BB!l -l5ll.776 417 4.7 .2!l 6.0 7.24 2. 100663
91020 0023 100664 1.0 44.8Bll -!le.776 417 4.7 .!l0· セ N b 7.26 2B 100664
91020 13023 10066!l 1.0 44.BBll -!lll.776 417 4.7 .7!l e.B 7.14 2B 1006615
91020 G1023 100666 1.0 44.8Be -!lll.776 417 4.7 .90 6.0 7.0B 28 10066691020 13024 100667 .19 44.B77 -15!l.7B2 366 4.7 .O!l ll.6 7.21 2. 100667
91020 G1024 10066B .ll 44.B77 -!le.7B2 366 4.7 .2ll 6.i 7.24 28 10066B
91020 13024 100669 .e 44.877 -S!l.7B2 366 4.7 .4B 6.3 7.23 28 100669
91020 GI02e 100670 .4 44.BB2 -!lll.7B8 324 4.7 .Oll ll.6 7.26 28 10067091020 GI02S 100671 .4 44.BB2 -!l!l.7BB 324 4.7 .20 ll.9 7.31 28 100671
91020 lJ02e 100672 .4 44.B82 -l5e.7B8 324 4.7 .30 15.4 7.26 2B 100672
91020 1302!l 100673 .4 44.BB2 -ll!l.7BB 324 4.7 .44 ll.8 7.12 28 100673
91020 G102.. 100674 .ll 44.BBll -se.791 304 4.8 .00 e.3 7.415 2B 100674
91020 13026 10067ll .ll 44.B8ll -1919.791 304 4.8 .1e !l.7 7.2B 2B 1006715
91020 G1026 100676 .ll 44.BBe -Sll.791 304 4.B .30 e.6 7.10 28 100676
91020 13026 100677 .e 44.BBe -es.791 304 4.B .4e !l.B 7.23 2B 100677
91020 S034 100729 .ll 44.B!l4 -se.9BO !l03 4.7 .00 !l.4 7.16 28 100729
91020 13034 100730 .ll 44.Bll4 -!l!l.980 !l03 4.7 • III !l.6 7.1B 2B 100730
91020 S034 100731 .ll 44.B!l4 -se.9BO ll03 4.7 .30 6.1 7.10 2B 100731
91020 13034 100732 .e 44.S!l4 -eS.9BO !l03 4.7 .40 4.9 7.07 28 100732
91020 G103ll 100733 1.3 44.B61 -Sll.979 4112 4.8 .00 .S.3 7.27 2B 100733
.,1020 1303ll 100734 1.3 44.B61 -!lS.979 4!l2 4.B .2S 19.7 7.28 2B 100734
91020 G103ll 10073!l 1.3 44.B61 -se.979 4112 4.B .!l0 ll.6 7. III 2B 10073!l
91020 1303!l 100736 1.3 44.B61 -!lll.979 4112 4.B .7!l e.6 7.10 2B 100736
91020 G103!l 100737 1.3 44.B61 -Sll.979 4112 4.B 1.00 !l.4 7.07 28 100737';>1020 1303!l 10073B 1.3 44.B61 -!l!l.979 ·4e2 4.B 1010 !l.3 7.02 2B 10073B
cセオャNN 9tn/Typ. ID Lat Lons Wat.r T.",p z pE pH 91 904 NH4 ID 5
91020 Cl0315 10073'1' 1.3 44.1!161 -1515.979 4152 4.1!1 1.20 15.15 7.0B 28 100739
91020 13036 100740 .7 44.9615 -1515.979 409 4.9 .00 15.1 7.215 28 100740
91020 Cl036 100741 .7 44.961!1 -1515.978 409 4.9 .215 1!I.3 7.20 29 100741
91020 G036 100742 .7 44.9615 -1515.979 409 4.9 .150 1!I.3 7.19 28 100742
91020 Cl036 100743 .7 44.B615 -1515.978 409 4.9 .67 15.2 7.20 28 100743
91020 G037 100744 .9 44.972 -151!1.979 373 I!I.O .08 4.9 7.16 29 100744
91020 Cl037 100748 .9 44.972 -1515.979 373 15.0 .2:5 :5.4 7.23 29 10074S
91020 G037 100746 .9 44.972 -1515.979 373 1!I.0 .150 :5.3 7.23 28 100746
91020 Cl037 100747 .9 44.872 -8:5.979 373 15.0 .70 :5.1 7.215 29 100747
91020 G039 100749 .3 44.979 -15:5.979 326 1!I.t .00 1!I.6 7.29 29 100749
91020 Cl039 100749 .3 44.979 -1515.979 326 15.1 .0:5 :5.6 7.26 29 100749
91020 1303&1 1007150 .3 44.979 -15:5.979 326 :5.1 .10 :5.3 7.19 29 10071!10
91020 G039 1007l!l1 .3 44.979 -15:5.979 326 :5.1 .1:5 :5.9 7.17 29 10071!11
91020 13039 1007:52 .3 44.979 -15:5.979 326 15.1 .20 15.9 7.13 28 1007152
91020 13038 1007153 .3 44.979 -1515.979 326 15.1 .30 15.2 7.06 29 10071!13
91020 130150 100907 1.2 44.4150 -153.717 1536 4.3 .00 4.9 7.32 430 28 100907
91020 130150 100809 1.2 44.4150 -:53.717 1536 4.3 .20 4.9 7.29 S60 29 10090S
91020 GOI5O 100909 1.2 44.4:50 -:53.717 :536 4.3 .40 :5.2 7.21 630 29 100909
'U020 ClO:50 100Bl0 1.2 44.4150 -:53.717 :536 4.3 .60 :5.1 7.33 620 2B 100910
91020 BO:50 100911 1.2 44.4150 -:53.717 :536 4.3 .80 4.7 7.0:5 610 29 100911
91020 130:50 100912 1.2 44.4150 -153.717 :536 4.3 1.00 4.9 7.12 :590 29 100912
91020 130:51 100913 .6 44.4157 -153.707 476 4.2 .00 15.4 7.37 360 28 100913
91020 ClO151 1001!114 .6 44.4157 -153;707 476 4.2 .10 15.15 7.27 400 29 100914
91020 130151 10091:5 .6 44.4157 -153.707 476 4.2 .•20 15.3 7.40 480 29 1009115
91020 130151 100816 .6 44.4157 -153.707 476 4.2 .30 15.15 7.21 470 29 100916
91020 G0151 100917 .6 44.4157 -153.707 476 4.2 .40 15.4 7.19 1520 28 100917
91020 ClO151 100918 .6 44.4157 -153.707 476 4.2 .150 15.15 7.41 1510 29 100919
91020 GRAB0154 1009015 .1 44.4715 -153.7015 446 4.2 .10 340 28 1008015
91020 ClRAB01515 100906 .1 44.4815 -153.697 3151 4.2 .10 310 29 100906
91020 G0159 100919 1.4 41.929 -150.079 3621 .00 15.6 7.61 440 29 .00 100919
91020 ClO159 100820 1.4 41.929 -150.079 3621 .015 15.7 7.67 1540 29 .00 100920
91020 GOS9 100921 1.4 41.929 -150.079 3621 .10 15.7 7.156 1520 28 .02 100921
.,1020 13015'1' 100922 1.4 41.929 -150.079 3621 .20 15.1 7.39 1570 2B .015 100922
91020 GOS9 100923 1.4 41.929 -so.079 3621 .40 S.2 7.92 620 29 .0:5 100923
91020 130:59 100924 1.4 41.929 -150.079 3621 .60 4.9 7.36 640 29 .10 100924
91020 GOS9 1008215 1.4 41.929 -150.079 3621 .90 15.3 7.49 640 29 .09 1009215
91020 130159 100826 1.4 41.828 -150.079 3621 1.00 15.3 7.34 690 28 .09 100926
91020 B0159 100927 1.4 41.928 -150.079 3621 1.36 15.4 7.154 1590 29 .09 100827
91020 P0159 100828 4.15 41.828 -150.079 3621 .00 1!I.7 7.30 1520 29 .00 100929
91020 P0159 100929 4.15 41.929 -150.079 3621 .0:5 15.9 7.32 1590 29 .00 100929
91020 poe" l00B30 4.8 41.928 -150.079 3621 .10 :5.2 7.151 1570 29 .00 100930
91020 P0159 100931 4.:5 41.929 -150.079 3621 .20 4.6 7.42 620 29 .06 100831
91020 PO:5" 100832 4.1!1 41.929 -150.079 3621 .40 :5.3 7.67 630 29 .06 100932
91020 PO:59 100933 4.:5 41.929 -:50.079 3621 .60 :5.3 7.48 620 29 .08 100833
91020 POe9 100934 4.:5 41.929 -:50.079 3621 .90 15.1 7.61 690 29 .12 100934
91020 PO:59 10093:5 4.15 41.929 -150.079 3621 1.00 15.0 7.49 720 29 .13 1009315
91020 PO:59 100936 4.:5 41.929 -150.079 3621 1.40 15.1 7.29 790 29 .13 100936
91020 POe9 100937 4.:5 41.929 -:50.079 3621 1.:50 :5.2 7.47 940 28 .14 100937
91020 POS9 100B38 4.15 41.929 -:50.079 3621 2.00 :5.2 7.43 9:50 29 .20 100939
91020 PO:59 100939 4.:5 41.929 -:50.079 3621 2.150 15.4 7.63 9150 29 .2:5 100939
91020 POlS., 100B40 4.15 41.929 -150.079 3621 2.'PI!I 15.0 7.27 930 29 .29 100940
91020 P0159 100941 4.15 41.929 -:50.079 3621 3.150 15.6 7.159 790 29 .:se 10094191020 POe9 100942 4.15 41.929 -150.079 3621 4.00 4.7 7.43 990 29 .41 100942
91020 PO:59 100943 4.15 41.929 -150.07" 3621 4.415 15.2 7.42 29 .44 100943.,1020 B069 1009415 .4 43.310 -49.141 99B .00 15.15 7.43 420 29 .03 100941591020 906., 100946 .4 43.310 -4".141 999 .015 15.0 7.39 1560 29 10094691020 B069 100947 .4 43.310 -4".141 999 .10 15.1 7.15" 600 29 .07 100947
91020 B069 100949 .4 43.310 -49.141 999 .1:5 15.1 7.34 620 29 10094991020 9069 10094., .4 43.310 -49.141 999 .20 15.6 7.39 660 29 .13 100949
91020 B069 1009:50 .4 43.310 -4".141 999 .215 15.2 7.20 690 29 100915091020 B069 1009151 .4 43.310 -49.141 999 .30 15.2 7.26 760 29 .21 10091!11
91020 B069 1009152 .4 43.310 -49.141 999 .315 15.4 7.19 760 29 .215 1009152
.,1020 T074 1009153 1.6 47.029 -43.:504 .,72 .10 :5.9 7.159 4150 2B .01 1009153
.,1020 T074 1009154 1.6 47.029 -43.1504 972 .20 6.2 7.39 300 29 1009154
91020 T074 10091515 1.6 47.029 -43.S04 972 .40 6.6 7.315 290 29 .01 10091!1S
91020 T074 1009:56 1.6 47.029 -43.:504 972 .60 4.9 7.30 270 29 1009156.,1020 T074 1009:57 1.6 47.029 -43.:504 .,72 .eo 4.2 7.40 290 29 .00 100957
cセオQN・ Stn/Type ID Car. LAt Lans z pE pH S1 804 NH4 ID 6
91020 T074 lOOSes 1.6 47.028 -43.S04 972 1.00 セ N S 7.S7 310 2S lOOSeS91020 T074 100SS9 1.6 47.02S -43.S04 972 1.40 4.4 7.28 360 2S .00 100SS.,91020 P074 100860 8.0 47.028 -43.S04 972 .00 S.7 7.39 330 28 .02 10086091020 P074 100861 S.O 47.028 -43.S04 972 .10 S.l 7.44 340 28 10086191020 P074 100S62 8.0 47.028 -43.S04 972 .20 S.O 7.48 270 28 .OS 100S6291020 P074 100S63 8.0 47.02B -43.S04 972 .40 S.S 7.31 330 2B 100B6391020 P074 100S64 B.O 47.028 -43.S04 972 .60 e.s 7.44 2S0 28 .OB 10086491020 P074 10086S 8.0 47.028 -43.S04 972 .80 S.S 7.66 410 28 10086lS91020 P074 100S66 S.O 47.028 -43.S04 972 1.00 S.S 7.48 28 .08 lOOB6691020 P074 100867 8.0 47.028 -43.S04 972 1.S0 S.7 7.S2 190 28 10086791020 P074 100869 B.O 47.028 -43.S04 972 1.87 S.7 7.S2 240 2S .10 100B6891020 P074 100869 8.0 47.028 -43.S04 972 2.S0 4.7 7.40 330 28 10086991020 P074 100B70 '1.0 47.02S -4:J.S04 972 3.00 S.6 7.47 340 2'1 .12 100S7091020 P074 100871 8.0 47.028 -43.S04 972 3.40 S.6 7.64 280 28 100S7191020 P074 1001!l72 8.0 47.028 -43.S04 972 4.00 S.6 7.S1 340 28 .14 10087291020 P074 100873 8.0 47.02B -43.S04 972 4.S0 S.8 7.S2 310 28 10087391020 P074 100874 8.0 47.028 -43.S04 972 4.93 15.6 7.74 270 28 .13 100S7491020 P074 10087S 8.0 47.028 -43.1504 972 S.SO 15.3 7.80 270 28 10087S91020 P074 100876 8.0 47.028 -43.S04 972 6.00 15.4 7.68 410 2S .1S 10087691020 P074 100877 8.0 47.028 -43.S04 972 6.S0 S.4 7.S3 340 28 10087791020 P074 100878 8.0 47.028 -43.S04 972 7.00 15.2 7.48 290 28 .16 10087891020 P074 100879 B.O 47.028 -43.S04 972 7.S0 S.l 7.47 310 28 10087991020 P074 100880 8.0 47.02& -43.S04 972 8.00 S.l 7.44 300 28 .1S 10088091020 S076 100882 .S 47.029 -43.S0S 967 .00 6.0 7.S9 160 28 .03 10088291020 8076 100883 .15 47.029 -43.S0S 967 .OS 6.15 7.3S 220 28 .03 100se391020 8076 100884 .S 47.029 -43.S0S 967 .10 6.4 7.42 230 28 .03 10088491020 B076 1008815 .15 47.029 -43.150S 967 .1S 7.0 7.39 240 28 .03 1008elS91020 B076 100886 .S 47.029 -43.S015 967 .20 6.6 7.2S 260 28 .03 100S8691020 B076 100S87 .15 47.029 -43.S0S 967 .2S 6;1 7.29 270 28 .03 10088791020 8076 1008B8 .S 47.029 -43.S0S 967 .30 7.1 7.2S 2S0 28 .03 1008SS91020 e076 100889 .15 47.029 -43.1S0S 967 .315 6.8 7.27 2S0 28 .03 100889
91020 S076 100S90 .S 47.029 -43.S015 967 .40 7.3 7.17 280 28 .03 100890
91020 e076 100S91 .15 47.029 -43.S0S 967 .4S 7.4 7.23 300 28 .03 100891
91020 T079 100892 .15 47.S62 -46.628 1143 .10 15.2 B.OS 3S0 28 .OS 10089291020 T079 100893 .S 47.S62 -46.628 1143 .20 6.0 7.3S 380 28 .06 10089391020 T079 100894 .15 47.1562 -46.628 1143 .30 S.B 7.SS 410 2B .07 100894
91020 T079 10089S .S 47.S62 -46.628 1143 .40 4.3 7.38 440 28 .08 1008915
91020 P079 100896 2.1 47.S62 -46.628 1143 .00 3.S 7.80 430 28 .14 100S9691020 P079 100897 2.1 47.S62 -46.628 1143 .OS S.7 7.72 430 28 .14 100897
91020 1"079 100898 2.1 47.1562 -46.628 1143 .10 15.6 8.00 430 28 .14 10089891020 ,..079 100899 2.1 47.1562 -46.628 1143 .20 4.8 7.44 440 28 .18 100B9991020 P079 100900 2.1 47.S62 -46.628 1143 .40 S.3 7.86 470 28 .2S 10090091020 P079 100901 2.1 47.S62 -46.628 1143 .S4 3.7 7.6S 4S0 28 .30 10090191020 P079 100902 2.1 47.S62 -46.628 1143 .80 4.7 7.S8 430 27 .46 10090291020 P079 100903 2.1 47.S62 -46.628 1143 1.00 4.1 7.41 2S .S2 10090391020 1"079 100904 2.1 47.S62 -46.628 1143 1.S0 4.7 7.415 460 23 .SS 10090491020 P079 1009015 2.1 47.S62 -46.628 1143 1.98 S.4 7.34 410 21 .S9 10090S
OTUlHTIC GEOSCIEHCE CEHTRE TABlE 7 CRUISE HUrl8ER = 91020DATA SECTIOH CHIEf SCIEHTIST = O.U. PIPER··SHIP- REPORTIHG PACKAGE TOtAL snnPLE IHUEHTORV PROJECT 1IOO8ER = 810M7
SIIflPLE SlII1PLE SHl1PLE SEISNIC DEPTH GEOGRAPHICHUIl8[R TYPE DHYITII1E OAMINE LATITUDE LOHGIlUDE J.!!.L LOCATIOH
001 CORE 1630650 1630650 13 25.87H 62 16.11U 120 SCOTIM SHELf8REIIK
)
002 GRIIB 1630720 1630717 1219.25H 62 17.93U 118 SCOTIAH SHELfBREAK
003TUC CORE 1631518 1631500 11 55.51H 63 22.57U 2729n SCOTIAH SLOPE
003 CORE 1631518 1631500 11 55.51H 63 22.57Y 2729n SCOTIAH SLOPE
001 CAIlERA 1631719 1631500 '11 55.20H 63 22.900 2738n SeOTIRH SLOPE
005 emR 1632015 1631930 '11 51.25N 63 23.19U 2738n SCOTIAH SLOPE
006 BOJl[ORE 1611257 1611258 12 10.21N 62 35.55U 2580n SCOTInN SLOPE
oome CORE 16'11530 1611130 12 09.71N 62 37.00U 2690" SCOTIM SLOPE
007 CORE 1611538 1611'130 12 09.71H 62 37.00Y 2690" SeOTInN SLOPE
OOBTOC CORE 1651512 1660950 '11 28.3OH 62 00.93U 1136" SCOTIAN RISE
008 CORE 1651512 1650650 11 20.30H 62 00.93fJ 1mn SCOTIAH RISE
009TOC CORE 1651151 1660950 11 01.32H 61 12.78U 110m SeOTIM RISE
009 CORE 1661'150 1660950 11 01.32H 6112.78U '1136n SCOTIM RISE
010 GRAB 1662010 11 05.30H 61 13.800 '1710" SCOTInH SLOPE
OllTue CORE 1671236 1116.77H 61 51.11U 1306n SCOTInN SLOPE
012Tue CORE 1671535 1670900 1116.12K 611D.12U '13'12n SCOTIRH RISE
012 CORE 1671535 1670900 1116.12H 6118.72U 1312n SCOTIM RISE
013 CORE 1681219 1680700 '11 19.76H 62 19.81U 3150" SCOTIRH RISE
013TUC CORE 1681219 1600700 1119.76H 62 19.81U 3150" SeOTInH RISE
011 CORE 1681752 1680610 11 17.31H 62 20.97U 3532" SCOTIM RISE
01mc CORE 1681752 1680610 '11 17.31H 62 20.97U 3532n SCOTIAH SLOPE
015 CAnERn 1682050 '11 '16 .93H 62 22.83U 3509n SCOTIAH SLOPE
020 CORE 1701918 1115.01H 55 38.07U 997" SI.PIERRESLOPE
021 CORE 1702111 11 50.53H 55 1'.99U 516n SI. PIERRESLOPE
UTLIIHTIC GEOSCIEH(E CEHTRE TUBlE 7 CRUISE HtmDER = 91020onTU SECTION CHIEf SCIEHTIST = o.J.U. PIPER-SHIP- REPORTING PUCKUGE TOTHl snWPLE IlfUEIlfORV PROJECT HUUDER = 810017
SlIIIPtE SIII1PLE SHnPlE SEISmC OEPfH GEOGRHPHIC
H!!r!!a J.Y.!L oUVmUE OHVITI"E LUIIIIIOE LONGITUDE J.!IL LOCHTIOH
02Z CORE 1702210 11 51.82H 5515.12U 018311 Sf. PIERRESLOPE
823 CORE 1702321 11 59.09N 55 16.50U 01176 Sf. PIERRESLOPE
021 CORE QWッッQ 11 52.628 55 16.92U 03666 Sf. PIERRESLOPE
025 CORE 1700052 11 52.91H 55 17.m 0321W ST. PIERRESLOPE
026 1710121 11 53.lZH 55 17.16U 0301W Sf. PIERRESLOPE
820 BOKCORE 1711136 1111.0ZH 55 31.15U 1331W ST. PIERRESlOPE
029 CORE 1711630 11il.DOH 55 31.53U 1331" ST. PIERRESLOPE
829TUC CORE 1711630 1111.0OH 55 31.53U 1331W SJ. PIERRESLOPE
031 CORE 1722H2 11 51.218 55 50.01U 050311 SJ. PIERRESLOPE
035 CORE 1722223 11 51.67H 55 5B.71U 0152" SJ. PIERRESLOPE
036 CORE 1722233 11 51.91H 55 58 .69U 0100n SI. PIERRESLOPE
037 CORE 1722100 11 52.31H 55 5O.69Y . om" ST. PIERRESlOPE
030 CORE 1730051 11 52.76K 5550.71U 0326W ST. PIERRESLOPE
010JUC CORE 1731513 111USH 55 36.91Y 1062" ST. PIERRESlOPE
010 CORE 1731513 1113.75H 55 36.91U 106m ST. PIERRESlOPE
012 CORE 1731937 1113.75N 55 37 .76U .1097" SJ. PIERRESLOPE
011 DOKCORE 1711153 11 31.05H 55 30.75U 1900" HHRUHIH. SITE,GRUHo DUNKS
HTLHHlIC GEOSCIENCE CENTRE TIlIIlE 7 CRUISE HUrlIIER = 91020OHm SECTIOH CHIEf SCIEHTI5T = O.U. PIPER-5HIP- REPORTING PllCKHGE TOTfIl SIII1PI.E IHUEHTORV PROJECT HlJI'lIIER .. 8100'17
SHIIPLE 5HtlPLE SRtlPLE SEISI1IC DEPTH GEOGRHPHICHUOO!!.. TVPE ORVITIlIE ORVITII1E LRTITUOE LONGITUDE J.t!l LOCHTIOH
019 oOHCORE 1751"36 "" 10.368 5H0t.26O 1m IlfIRUHfIl SITE,1iRflH0 ollHKS
050 CORE 1751613 "" 27.65H 53 12.97U 53611 HnRUHIIL SITE,GRHHo BRHKS
051 CORE 1751655 1il7.1ON 53 12."lU 17611 IlfIRUHHl SITE,GRRHo BRHKS
052 URTER 1751730 "" 27.61H 53 "2.26U 12111 HflRlIlIIII. SITE,GRRHo oRNKS
053 CORE 1751800 "" 2B.2ON 53 12.05U 12811 HRRUHRl SITE,GRIIIlo BllHKS
051 GRRB 1751832 ot1 28.52H 53 12.3lY 11711 HRRUHRl SITE,GRHND 8RHKS
055 GRRo 1751906 "" 29.1ON 53 11.88U 35111 HfIRUHHl SITE,GRRHO BRNKS
056 DREDGE 1771830 "210.81H 52 53.260 168011 UESTERH fOGOSERI10UHTS(LIHE 1)
057 DREDGE 1781230 "213.0978 52 5B.39U 213511 MESTERH fOG8SERI10UHTS<LIHE G/H)
05B DREDGE 1781750 "2 09 .51HH 53 03.77U 153811 MESTERH fOGOSERI'IOUHTS<LIHE G/H)
059 CORE 1791311 11 "9.6fiH 5OOU1U 362111 TITJlHIC DEBRISfLOU
059TUC CORE 1791311 "1 "9.66H 50 01.71U 362HI TITHHIC DEBRISfLOU
060 CORE 1791806 111UZH "9 57 .55U 370611 TITHHic DEBRISfLOU
061 CORE 1800151 1115.51H "9 57.m 370011 TITJlHIC UREerSITE
062TUC CORE 1801332 11 "".77H 19 57.36U 37m TITJlHIC UREerSITE
CORE 1801332 "11'1.77H 19 57.36U 371311 TITRHIC UREerSITE
)
RTlRHTIC GEOSCIENCE CENTRE TRBL£ 7 CRUISE HIltlDER = 91020ORTR SECTION CHIEf SCIENTIST = o.J.U. PIPER-SHIP- REPORTING PRI:XRGE . IDTRL SIItlPLE IHU£HTORV PROJECT HU"OER = 810017
SRrII'lE SIIIlPLE SImPLE SEIWC D£PTH GEOGRRPHICHUNDER Jill.. DRVlTIlIE ORVlTInE LRTITUDE LONGITUDE Jr!L LOCOTIOH
0&1 CORE 180215& 1113.DOH 50 OU1U 3719n TITRHIC RREn
0&5 CORE 1810120 11 5O.07H 19 52.57U 3G2OO TITRHIC ORER
0&6 CORE 1810923 12 1&.DOH 500&.%U 0395n TOIL Of THEOfIHKS
067 GRRD 1811000 12 16.03H 50 06.95U 0395n TRIL Of THEDRHKS
068 GRRB 1811131 13 20.29H 19 17.88U omn TRIL Of THEHRHKS
069 HOKCORE 1811610 13 18.m 19 08.17U 1171n TRIL Of THEHRHKS
070 DREDGE 1821311 15 68.918 15 29.75U 31700 fLEnISH CRP
071 DREDGE 1821719 15 52.398 15 12.65U 3031n fLEnISH COP
072 GRIIH 1822151 15 51.&68 15 l1.05U 2751n flEnISH CRP
071 CORE 1831322 17 01.6OH 13 30.2514 l1972n fLEmSH CRPSOUTHERST
071TUC CORE 1831322 17 01.6OH 13 30.2514 0972n fLEnISH CRPSOUTHERST
075 8OllCORE 1831631 16 58.278 53 23.86U 11800 fLEnISH COPSOUTHERST
076 OOHCORE 1831711 17 01.738 13 30.27U 09676 fLEnISH CRPSOUTHERST
077 GRR8 1832028 16 15•• 13 15.851U 0631n fLENISH CRPSOUTHERST
078 GRRH 1832155 17 01.95H 13 59.900 03706 fl[nISH COPSOUTHERST
079 CORE 1811216 1733.728 1& 37 .700 111311 fLEl1ISH PRSS
079TUC CORE 1811216 17 33.72H 1637.700 1113n fLE"ISH POSS
RTlRHTIC GEOSCIEIlC£ CEHTREonTO SECTIOH-SHIP- REPORTING POCKOGE
TII8I.E 8 CRUISE IftJIIBER = 91020CHIEf SCIEHTIST = 0.J.U. PIPERPROJECT HunOER = 810017
CORER APP. CORE HOSRnPLE SOnPLE OOV/TInE LOTHUDE DEPTH LENGTH PENH LENGTH Of GEOGRAPHIC!!!m!!ER l!!1. (Gnn LONGITUDE .(UTRS> (cn> (Cn> (cm SECT LOCOTIOH HOTES
001 GROOITV 1630650 13 25.87H 120 015062 16.11U
0000 01 SCOTIRH SHElf HO RECOUERV;BREAK TROC[ SILT OH ORRREL; SBnPLE
DUEO fROO THE IHSIDE Of THE OORREL:
003HJC TRIGGER lJ£IGHI 1631518 11 55.51H 2m" 0150 0190 0100 01 SCOTIRH SLOPE TOC SRnPLEO0-5Cn POLLEN; BULK63 ZZ .57U DEHSITV RHO POREIJOTEREUERY 20cn
TO IOIOL DEPTH;
003 OGC LOHG CORE 1631518 11 55.51H 2mn 1520 1000 0991 10 SCOTIRll SLOPE IUC C/B 0-91Ctl;B/0 91-188Ctl;63 22.57U CHRIS fILE sPPSセ fILE HonES C,H,2,
PO 1,2;LENGTHSI KIJ 70Ctl SECTIONItlPLOOED UITH LINER; J/I LINER SPLITEHTIRE LENGTH;HIJ U5Cn; RIG 72[11;Glf 86; fIE 152cn; EIO 6ocn; O/C OOC";B/O 57 cn: ROCK OOGGED HI; ns RUB;K/J 0-92; ,J/K 92-197; I/H 197-329:RIG 329-395; G/f 395479;fIE 17H30;[/0 630-698; O/C 690-781; C/8 781-936;DIR 936-991;
007TfJC TRIGGER UEIGHT 1611538 12 09.71H 2690n 0150 0190 0157 01 SCOTIRH SLOPE TOC B/C 0-56Ol; OlD 56-157cn:62 37.8OU HO OBn06E;
007 RGC LONG CORE 1611530 12 09.71H 26900 0159 0900 0130 05 SCOTIRH SLOPE IOC TUO SECTIOHS OIB o-59CtI; B/C 59-159CVRョセ t
[IffIIS RtJH urn 130007:O/C 0-lzocn; C/B 129-279CtI: 81R 279-130cn; 33 Ctl SHRTTER IN O/C;
009IUC IRIGGER UEI6HT 1651512 11 2B .3OH 1136n 0150 0190 0068 01 SCOTIRH RISE RID 0-68cn: SRHOV TOC;62 00.93'1
OOD RGC LOHG CORE 1651512 11 29.3OH 1136t1 1520 0301 0293 02 SCOTIRH RISE ORRRELS BROKE RI fIRST COIIPLIHG; SECONO62 00.93'1 BRRREL 8EHT; LOST OOTTon Of HEffLER
PISIOH; OIC 0-1'11cn; RIB 1'11-293C";
009TOC TRIGGER Il£IGHT 1651151 11 01.32M 1192" 11300 0190 0178 02 SCOTIRH RISE CIO 0-78; RIO 79-178:6112.700
009 RGC LOHG CORE 1661150 11 01.32M 1136" 12166112.700
1001 07 SCOTIRN RISE RIG 0-57;G/f 57-211;fIE 211-361;£/0 361-516; OIC 516-660;CID 668-020; 810 020-1001
OllTfJC TRIGGER UEI6HT 1671236 11 16.778 1306tl 0150 0150 0129 01 SCOTIRH SLOPE RIO 0-129CN; CUTTER 13Cn LOHG;61 51.11U TfJC OHLY HO LOHG CORE RECOUEREO;
HRHNm GEOSCIEHCE CENTREoRTR SECTIoH-SHIP- REPORTING mHGE
TOOLE 8 CRUISE HUIIIIER = 91020CHIEf SCIEHTIST = D.J ,M. PIPERPROJECT huセder .= 0100'7
CORER RPP, CORE HOSRMPLE SOOPLE ORY/TIME LRJITUDE DEPTH LENGTH PEHH LEHGTH Of GED6RHPHIChuセder TYPE _ (GMT> LoHGITUDE (MTRS) (eM) (CM) (CM) SECT LoCRTIoH HOTES
o12TOC TRIGGER UElGHT 1671535 U 16. '2M m2M 0150 0090 006' 01 seOTIRH RISE fIHGERS oH CRTCHER IHUERTED;LOST SOl'lE Of61 '0.72U TIlE SRWlE HT THE OOTER SURfHCE:
012 AGC LOHG CORE 1671535 U lUZH m2M 1216 0908 0105 SCOTIRH RISE TOC PMVGcセ[
61 'O.12U SECTIOHS: EID 0-09CM: OIC 8H89CM;CID 189-33701: D/R 337-185CM:
013 RGC LOHG CORE 16812'9 U '9.76H 3150" 1520 1350 07'0 05 SCOTIRH RISE HO dセrge[ HOTED 3 cセ DIHMETER UORn6219.81U DURROUS IN UPPER 50 CM CORE:TUC 0-79CM.
Elf 0-112; DIE 112-267: CID 26H20:DIC '28-571: OlD 571-122; CUTTER 722-7'0;
omuc TRIGGER UEIGHT 16812'9 11 '9.76H 31508 0150 0200 0178 01 SCOTIRH RISE HO ooセogeZ TUC D/C 8-79; OlD 79-179CM:62 19.DIU CUTTER 179-207C8;
011 OGC LOHG CORE 1681752 U '7.3'H 3532"62 20.97U
sconRH RISE
011TUC TRIGGER MElGHT 1681752 U '7.3'H 3532" 0150 0190 0165 01 SCOTIRH SLOPE ruc 2 SECTIONS: RID 0-82; DIC 82-165:62 2O.97U
020 GRHUm
021 GROUm
022 GROUm
07.3 GROUm
021 GROUm
025 GROUm
1701918 1115.0'H 997" 015055 38.07U
1702111 "50 .53H 5168 027055 ".99U
1702n0 "51.02H 01838 015055 '5.'2U
1702321 " 59.09M 0117M 015055 %.50U
1700001 " 52 .62H 0366" 015055 16.92U
1700052 "52 .9tH PSzQセ 015055 17.27U
0101 01 ST. PIERRE OH 3.5HZ: CHRISTIRH CORE fOR LOHCElOT;SLOPE CUTTER DR66ED;CUTTER OH01CM;
0131 01 ST. PIERRE GROUm CORE 1 fOR CRRHSTOH TRHHSECT:SLOPE CUTTER SHIlPLE UHSHEO OUT OH DECK:
om 01 ST • PIERRE CUTTER UHSHED OUERDOHRO;SLOPE 018 o-mCM:
0100 01 ST. PIERRE CUTTER HOT DAGGED: POLLEN SAMPLED HTSLOPE SUllfOCE:SOfT, SIlTY fIlIE SRHOY IWD;
RID 0-100CM;
0053 01 ST. PIERRE SOfT, SDIJPY SIlTY 000; TOP 8-20 CMSLOPE UOSHEO fOR SHEllS:DIOTURDHTED THROUGHOUT
0/8 0-53CM;
0012 01 ST. PIERRE CORE CUTTER fELL ON DECK; 8RIHLE STURSLOPE OH SURfRCE Of CORE; TOP 20 CM Of CORE
MISSING:0/8 0-12CM;
HTlIlHTIC GEOSCIEHCE CEHTRE THUlE 0 CRUISE HUnOER = 91020OIlTR SEClIOH CIUEf SCIEHTIST = O.U. PIPER-SHIP- REPORlIHG PRCKH6£ CORE SIIl1Pt.ES PROJECT HUnOER = 010011
CORER HPP. CORE HOSRnPLE SRnPLE DRVIlIl1E LRlIlUDE DEPTH LEHGTH PEHH LEHGTH Of GEOGRIlPHICHlJnBEK ..:r.m.. Jlit!IL LOHGITUDE (nTRS> @L illll (cn) SID LOClllIOH HOTES
026 GRRUITV 1110121 11 53.lZH 0301n 0150 0050 01 ST. PIERRE TOP 16 cn OISTUROEo; STIff OUU£ nuoov55 11.16U SLOPE SRHD tlIlH SHELL fRRGl1EHTS;POOR RECOUERV;
029 HGC LOHG CORE 1711630 11 11 ,DOH 1331i1 1520 1260 0151 01Sf. PIERRE InPLOSIOH HT PISToH; TtlC 8-52Cn;55 31.53t1 SlOPE. COHSOlIORlIoH SHnPLES THKEH HT 0-0'( 251
- 2?? CU); O-B' ( 560-500cn> fIHO tlHOLEROUHO HT 320-31ocn C/O; CUTTER 10m01lGGE0; f /E 0-122 cn; E/o 122-257cn;OIC R__セQRYcョ[ C/O 129-56O[n; O/H 500-mcn; CUTTER 733-151Cn; TO mcn
029ltlC TRIGGER tlEIGHT 1711630 1111,OOH 1331" 0150 0052 01 ST. PIERRE R/8+CUlTER 8-52Cn;55 31.53'" SlOPE
) 031 GRRUm 1122112 11 51.21H 0503n 0150 0011 01 SI • PIERRE CUTTER IH TUO PIECES- DRGGED;55 50.81'" SlOPE POLLEH SRNPLE 0-2cn;
CRRHSIOH GEOCHEn TRRHSECT SI,PIERRESLOPE;
035 GRHUm 1722223 11 51.67H 0152N 0150 0132 01 ST. PIERRE GROOITV CORE 0-115cn; CUTTER 115-mcn;55 50.11tl SlOPE POllEH TRKEH 8-2CU;
036 GROOITV 1122233 11 51.91H 0100n 0150 0068 01 SI. PIERRE HO CUTTER; POLLEH 0-2cn;55 50.69U SlOPE
031 GRRUITV 1722100 11 52 .31H 03136 0150 0092 01 SI. PIERRE POLlEH 8-2Cn; RIO 0-72CR; CUTlER 72-92cn55 50.69tl SlOPE CUlTER ORG6£o;
038 GRHUm 1130051 11 52.76H 0326n 0150 0033 01 ST, PIERRE HO CUTTER; POlLEH 8-2cn;55 58.71U SlOPE lIlRGE NOlLUSC HT SURfRCE;
0101"'C GRHUm 1131513 11 13,75K 1062N 0150 0190 113 01 SI. PIERRE TtiC 11/0 0-113cn;55 36.91'" SlOPE
010 HGC LOHG CORE 1131513 1113.75H 1062n 1220 0678 SI. PIERRE OOlTon 2 SECTIOHS GRSSV; CRTCHER 8HGGED;55 36.91'" SlOPE CUTTER 10 cn; f/E 0-52CU; DIE SHHrrER
BETtlEEH IIPPER 20 cn; OlE 52-Z08m; C/O208-320; 320-360cn COHSOUDRlIOH SHRPlE;O/C 360-51ocn; 11/0 510-660cn; TO 618;GRSTROPOo SHnPLE REnOU£o HT 13cn;
012 GRHUm 1131931 11 13.15M 1097R 0150 0200 01 ST. PIERRE CORER IH RIlCK 1956;55 31,16U SlOPE
ATlAHTIC GEOSCIEHCE CEHTREOATA SECTIOH-SHIP- REPORlIHG PACKAGE
TOOLE 8 CRUISE HUIl8ER = 91020CHIEf SCIEHTIST = 0.U. PIPERPROJECT HUIl8ER = .8100'7
CORER APP. CORE HOSAnPLE SMPLE OIIV1lIl1E LATITUDE DEPTH LEHGTH PEHII LEHGlH Of GE06R8PHICt!!lm TVPE J.§tlIL LOHGIlUDE <mRS> <C!1) <cn)..ill!L SECT LOCOIIOH HOlES
050 6RRUIlV
051 GROUm
1751613 "27 .65H 536" 0270 0130 0117 01 HRRMHfII. SITE, HIB 0- 86cn;53 '2.97U GRAHn BIIIlKS CUTTER 86-117CW;
GEOCHEl1 TRHHSECT;
1751655 "27.'OH '76W 0270 0060 0051 01 HIlRIlfIIIl SITE, O/B 0-22; CUTTER 22-51C" TO;53 '2.UM GRAHn 8111lKS
053 GROOm 1751800 "28 .20H '28" 027053 '2.05lJ
0000 01 HIIRUHRI. SITE, HO RECOUERV;GRAHD .S EHo Of CUTTER flHE GRAIHED CLAVEY
GLHUCOHIlIC SILT; RARE PLAHKIOHICfORHn5, RADS RHO HRHNOS;
059 AGC LOHG CORE 179131' U '9.66H 3621n 1216 0950 M50 03 TITHHIC DEBRIS HO CUTTER; flHGERS IHUERTEo OH CUTTER;50 mNWセ fLOY olC PMQセ[ CIB HH98; 818 298-'50cn;
TUC 0-136cn;
059TUC TRIGGER UEIGHJ 1791m '119.66N· 3621n OHO 0120 0136 01 TITRHIC DEBRIS AI8 0-136C";50 ouセ ROM
060 GRAUITV
061 GROUm
1791806 11 '1.'2H 3706n 0270 00'0 ッッ 01 TITRHIC DE8RIS HO RECOUERV; UEHEER Of UERV fIHE GREEH'9 57.55Y fLOO SAND OH OUTSIDE Of CORER;
30 cn PEHElROlIOH;
1800151 U '5.5'" 3700n 0270 0080 0060 01 TITHHIC URECK UERV STIff CLAY IH CUTTER; SAHD OBOUE;'9 57.13Y SITE 818 0-33Cn; CUTTER 33-60Cn;
COHSOlIDAlIOH SOWPLE TAKEN OJ 52-5,cn;
06ZTOC TRIGGER MEIGHT 180m2 U 1U7H 37m 0270 OMO 0027 01 TITAHIC URECK TUC HO RECOUERV; TUC CUTTER 0-27CW;'9 57.36U SITE um STIff nUD;
062 OGC LOHG CImE 180m2 11 ".77H 3713W 0912 0200 0165 01 TITlIHIC URECK A/8 0-136cn; CUTTER 136-165cn;'9 57.36U SITE COHSOLIDOlIOH 15H65cn;TRIRllIOL 1'5-165
C!1;
)
061 GRRUITV
065 GROUm
1802156 11 '3.00N 3mn 0270 OMO 0000 01 TITHHIC aREA HO RECOUERV; UASHEO OUT ; LIGHT GREEN50 OUIY UERV flHE SOHD, COaRSE SILT OH OUTSIDE;
1810120 11 50 .07H 36206 0270 0010 ッッ 01 TITRHIC AREA SAnPLES REOOUED fRon BOLT HOLES OH'9 52.57U BARREL;A= 8ROOH WUDDV OOZE; 8= GRAV
nuoov OOZE; C= rJlAUELLvfORAn OOZE,ROSALIHO SP., RARE PLAHT RHO BEETlEfRAGWEHTS os IN CORE 062; UElL-ROUHDEDSAHO AHO HH6UlAR GRAUEL Of UDRVIHGPETROLOGV; TAR? RIP-UP CLAST, MORn TUBE;SAI1PI.ES LABELLEO;
HTLRHTIC GEOSCIENCE CEHTREORTH SECTIOH-SHIP- REPORTIHG PHCKHGE
THOLE 8 CRUISE huセoer = 91020CHIEf SCIEHlIST = 0.J.M. PIPERPROJECT HUnDER = 810017
)
CORER HPP. CORE HOセpャNNe shセle ORVlJInE LRmUOE DEPTH LENGTH PEHH LEHGTH Of GEOGRHPHICHunDER TVPE (Gnn LOHGITUDE (nTRS) (Cn> iClt2 (cn) SECT LOCHTIOH HOTES
066 GROOIlV 1810923 12 'I6.0OH 0395n 0270 0000 0000 01 lHIL Of THE HO PEHETRHTIOH; GRHO THKEH STHTIOH 067;50 06.96M DllH«S
07'1 HGC LONG CORE 103m2 17 01.68H 0972" 1215 fLEnISH CUP13 30.25U SOUTHERST
071JOC TRIGGER MEIGHT 1031322 17 01.68H 0972" 0270 01 flE"ISH CHP H/O 0- cn; CUlTER 1iCn;13 30 .25M SOUTHERSJ
セlonHセ hZセ エsMセ 60f :J.oS-079 tRIGGER &ORE 1011216 17 33,72K 1113" ft' .n- 0Q4l}- 01 flEnISR PHSS H/O 0-19cn;
16 37,70M
079TOC TRIGGER MEIGHT 1011216 17 33.72K 1113" 0270 0150 01li9 01 flEnISH PHSS RIO 0-'I9r.n;16 37,70M
RTLRHTIC GEOSCIEHl:£ CEHTRE TRBlE9 CRUISE HUIlBER = 91020ORTR SECTIOH CHIEf SCIEHTI5T = o.J.M. PIPER-SHIP- REPORTIHfi PRCKRGE GRRB SRl1PLES PROJECT HlJnBER = 810M7
SRnPLE TYPE Of ORVlTInE LRTITIlD£ DEPTH NO. Of HO.Of GEOfiRAPHICHUMBER SRMPLER (GnT> LOHfiITUOE Jill... nml1PTS SUBSOMPLES LOCRTIOK GRRB SRnPLE HOTES
002 URK U£EH 1630720 '12 '19.25H '1'18 01 03 stOTIRN SHElf SRHOV UHIT UITH GOOD SURfRCE;SUOSRMPLES62 '17.93Y OREAK TRKEN- 80B (2) PETR (1)
TEMP 5.3OC; XOll 20.0
010 URN UEEH 1662010 '11 05.30H m8N 01 09 SCOTIRH SLOPE HEAUILV BIJRROYED, REO ClOVEY MUO, UITH61 '13.88U CO. YORN TUBES;CR. Hen Of THIS nuo
OUERlIES UGHT GRRV fORon OOZE;1 NIHICORE ( POlEONHfi PLUG> fOR POlYH.1 20CC UIOl fOR POLY R fORRRS (O-lCn>3 nIHISLRBS 0P!'ROH lOcn UHG, 0-12,0-9,O-DCM; 1 ORIEHTED SLOB fORRN OOZE 2-'1; 1SLRO OT HeM; 2 BULK SOOPLES CLRV ft OOZ
05'1 URH UEEH 1751032 '11 20.52H 117" 01 02 HRRR SITE, DUUE GRRV SRHOY nuo UITH SHELLY53 12.31U GRRHO OONKS fRRGnEHTS RHO fORRn5;
LRRGE SRI1PI.E OHfiGED 0-5CM; POLLEH 0-2eMGEOCHEM SRMPLE;
055 URH tlEEH 1751906 '11 29.1OH 351" 01 03 HRRYHRL SITE, HIGHLVDISTUROED; OULK SnnPLE THKEH;53 11.80Y GRRHO BRHKS
067 URH UEEH 1011000 12 '16.03H 0395" 01 01 TRIl Of THE 20 CC RSSORTED GROUEL BIIliGEO;50 06.95Y BRNKS
060 URN tlEEH IB1113'1 '13 20.29M M12" 01 01 TRIL Of THE 25CC Of SRHO; YHOLE SRMPLE TRKEH fOR'1917.000 DRllKS GEOCHEMISTRY ; HO SR"PLE ORCHIUED;
072 UOH UEEH 182215'1 15 5'1.66H 2751" 01 01 fLEMISH CAP snHLL RNOUHT Of GRAUEL RECOUERED;15 lU5Y RSSUnE REST YRSHED OllT UPON RETRIEUOl;
077 URN UEEH 1032020 16 '15.088H 863m 01 01 fLENISH CAP BIOLOGICIIL SPECIfiEHS REMOUED; OUUE't3 '15.85'1Y SOUTHERST GRRV 5V'I/l fIHE SRHOY nun UITH CO.
ooRN TRRILS; COONOH DIUOlUES RARETUHICRTES RHO GEOOnO SPOHGES,; StIIIl.LBRITTLE STIlR, RARE UERTICOl UORM TUBESRHO CONROH CORRSE 6ROUEL;
078 URH tlEEH 1832155 '17 01.95H 0370n 01 02 fLENISH CAP 383 NUIRE OUT;'t3 59.98Y SOUTHERST '10C TEnp. RECOUERED 1 L nuDlSOHD;
1IllUE GRRY fINE SOHOY,SllTV nuo,STRUCTURElESS UITH 2 snOlL BRITTlE STARSOT THE SURfOCE;POlVH 0-2cn; 1 OULK SRnPLE rJEOCHEn;
ATlAHTIC GEOSCIEHCE CEHTRE TABU 10 CRUISE HUIlBER e 91020ORTA SECTION CHIEf SCIENTIST = o.J.U. PIPER-SHIP- REPORTING PRCKRGE fJlITER SRnPlES PROJECT HUMBER = 810017
SIII'll'lEsn"PLE SRMPlE JUlIAN LOTITUDE DEPTH BOTTLE DEPTHS GEOGRfIPHICHUIlBER TVPE DIIVlTlnr lOHGlliLDE (nTRS) UOlunH ( 1-10 ) lOCRTIOH HOTES
052 !IIITER 1751730 11 27 .61H 421" 123 HIlRWIIIL SITE,53 12.26U GROND BRHKS
ATLAHTIC GEOSCIENCE CEHTRE TABlE 11 CRUISE NUIlBER = 910Z0OATH SECTION CHIEf SCIENTIST = o.J.U. PIPER-SHIP- REPORTING PACKHGE .!!H!llit SRIlPLES PROJECT HunBER = 0101K7
SAMPLE TM Of ORYlTInE LRJITUOf DEPTH HO.Of GE06lIAPIIICHUMB£R SAMPLER ....Jill!IL LOHGIlUOf J11L ATTEMPTS LOCATIOH DREDGE SfWLE HOTES
056 ROCK Im830 iZ 10.01H i68Dn 01 !JESTERH fOGO ON TERRACf Z200fn.5Z 53.Z6U SEIIOOIlHTS HO RECOU£RY;
(LIHE 1)
057 ROCK 1781Z30 12 13 .097N zmn 01 UESTERH fDGO HIGHLY HLTEREO RECRYSTHLLIZEO SIDERIJIC52 58.390 SERIlOIIHTS nun; HO nICROfOSSILS; nuo SAnPLEO fRon
(LIHf 6/11> TIlE OUTSIDE Of TIlE OR£06£; NO SAnPLESRECOU£R£O UIlHIN THE DREDGE;
05B ROCK 1781750 1Z 09 .51HH 1538n 01 !JESTERH fOGO HIGHLY UEATIf£REO ROCKS; PREOOI'iINANTLV53 03.77U SEAMOUNTS TIf£OLIJ£S UIlH COnnON RHYOLITES AHO RARE
(LINE 6/11> BASHlTS;ZOX ERRATICS RHO 80% UOLCAHICS;ERRATICS INCLUDED LInESTOHES. BRECCIHS.RHO MOHY MAHRGAHESE COHJ£O GRANITOIDS.
070 ROCK 1821311 15 68.91N 31700 01 fLEMISH CAP END DREDGE 15 51.936H;15 15.753U;15 29.750 START UHS 2 CABLES TO NU Of END (Z/10Hn>
S£UfRHL LARGE ERRAJICS RECOUER£D;
071 ROCK 1821719 15 52 .39H 3031M 01 fLEilISH CAP15 12.65U
RTLHHTIC 6EOSCIEHCE CEHTRE TH8I.E 12 CRUISE IfIIflDER == 91020ORTH SECTIOlI CIIIEf SCIEHTIST == o.J.!J.PIPER-SIIIP- REPORTING pnCKJl6E 8OlICORE· SHnPLES PROJECT IfIIflBER == 010017
TYPE HO HO HOSHI1PLE Of JUlInH LHTITUDE DEPTII Of or or PIIOTOS 6EOGRHPHICHunOER BOXCORE OHVITII'l£ LOHGITUDE (nTRS) HmTS SUBS CORES THKEH LOCRTIOH HOTES
006 BOXCOl!E 1611257 12 10.21H . 250M 01 05 05 V SCOTIRH SLOPE ROUHORHT POlVCHHETES; connoN Sf/HLL62 35.55U OURROUS HPPROIf. 1 fIfi OIHflETER; ORVOZORNS
UITII SCRTTERED GRHV flUD CLHSTS;10VR1/2;R=llRCllIUE;C==CHEflISTRV;G==6EOTECII;I==?; E==I1UDIE; CLHSS 8C!lRE CUORKEO UP fOR POREUHTER RHO BUlKDEHSITY Eum sen;
028 80XCORE 1711136 1111.02H 1331n oz 09 05 V ST. PIERRE OllUE BROUN SIlTV nuo UITH fORnflS,55 31.15U SLOPE confiON UORfi TRRILS HHO UERTICAl UORn
TUBES, 1-1 tll1 DIRfiETER; 2 CONSOUORTIONSRflPLES UERTICRL RHO HORIZOHTRL; SHERRURHE RUH IH SITU; 2 BUll SIIl'IPlESH== ARCHIUE; C==CHEnISTRV/6EOTECH; 6=GEOTECH fOR lJHOlE ROUHD RHAlVSES; E=flODIE; I=UHUSED;BIlI.X SURfACE SRflPLE TRKEN; 2 BULK SHI1PLERT 6-51 10-TO;
011 BOIfCORE 1711153 11 31.85N 1908f1 01 01 05 V HllRUIIAl SITE, OlIUE GRRV SIlTV 1'iIJII, TOTRLLVBURROUED;55 30.75U GROHII BRHKS unH OCCRSSI8NRl UERTICRL TUBES, COfifiON
f1UD ClRSTS, PEBBLE (HCm UITH RHREGRAUEL, SlIELL RHO REO f1UD CLRSTS; LHRGESRf/PlE-I1UN;PILCON URHE PROfIlE 00NE;0-15H=HRCHIUE;C=CHEn;E=f1UDIE;6=GEOTECH;I=UNUSED; TO 15cn;POlLEN, OUlK DENSITY;
019 BOIfCORE 1751136 1110 .36N 1355f1 01 03 05. V .HHl SITE, LT • OUUE GROV(5V5/2)fIHE SRHOV f1UD;53 11.2W 6RRHO BRNKS ORITTLE STAR HT SURfACE; UORn BURROUS
HOUHDRHT, COfiflOH UERTICRl BURROUS,BRVOZORNS COfll'llJN, RRRE GROUEl;5 PUSHCORES= R=RRCHIUE; c=CHEn SPLIT 0-35Cf/; ns I'l£RSURED ON "I"; CPHOT06RHPHEDPIlCOH UHHE DOHE;CSRI1PLEO fOR 6EOCHEflISHERR URIf£IBUlKDENSITY; ESHI1PLED fOR POLLEN, C/N RRTIO
069 BORCORE 1811610 13 10.57H 1171f1 01 06 05 V TRIl or TIlE 5 CORE TlIKEN; CSPlIT fOR GEOCHEflISTRV19 DO .17U BRNKS RHO GEOTECH; PILCON URHE RUH;
OTLOHTIC GEOSCIEHCE CEHTREDIITO SEmOH-SHIP- REPORTIHG PIlcrOGE
T/lIIl[ 12 CRUISE HIIl'IOER = 91020CHIEf SCIEHTIST = 0.J.M. PIPERPROJECT HUnDER = 810017
TVPE HO HO HOSonPLE Of JULIDH LOTITUDE DEPTH Of Of Of PHOTOS GEOGROPHICHIIl'IRER BOKCORE DIIV/TINE LOH6ITUIlE <"TRS) DInTS SUBS CORES TIIKEH LOCDTIOH
075 80KCORE 1831631 16 58 .27H 118011 01 01 00 H flEl1ISH COP53 23.8611 SOUTHERST
076 8OKCORE 183171117 01.m 0967n 01 08 05 V fLEnISH COP13 30.Z7U SOUTHERST
LORGE GHEISS ERRRTIC RECOU[REO: 80KCOREOOO86EO: I'lIJII SCROPEO fRDn THE SURfRCEOf THE ERROTIC fOR NICROfOSSILS/POLLEH:
PIlCOH UllHE nERSUREl1EHTS NODE: CORE CSPlIT: TO 8-1OCN; lH.IUE GROV SRNOV nun10VR 6/3 PIlI.E DROlJH: RDUHORHT UORN TROlLSRHO TUBES; nomo UIT" SPOHGE SPICUlESRDRE SHELLS: GlOSS SPOHGES CDnOOH;TOTHl LEHGTH 0-1OCN;
Nセ
Hudson 91-020
d 9 1 020
42N
40W42W
44W
44W
46W
46W
48W
48W
50W
50W
" "' 42W
52W
52W
54W
54W56W
56W
58W
5BW
60W
60W
62W
62W
64W
48N
50N
46N
44N
42N
40N 6:; I .l I I I I L \ Tセw 40N
. . s」セA・ 1QOOOOOO:1PrOjection Lombert Conformal 41N/45N
64W
43N
Hudsond 9 1 020
63W
91-020
62W 61W
43N
.IHELaU ••E G-J:8
MOHICAI 1-100
ltACAO.A llC-a2
elilLaArlOII· 1-1!
IlIoSHU8ENACAD I e "-100
42N
41N
42N
41N
64W 63W 62W 61W
Scene Q V P P P P P Z セProjection Lambert Conformal 41N/45N
57W 56W30
Hudsond91020
56W
9 1 020
55W30 55W
45N
44N30
44N
45N
44N30
44N
57W 56W30 56W
s c i ャ ャ ャ i セ i ャ h h i o o j i ャ Z セ
Projection Lambert Conformal 41N/45N
55W30 55W