Excavations at Jebel Faya — The FAY-NE1 shelter sequence
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Transcript of Excavations at Jebel Faya — The FAY-NE1 shelter sequence
Excavations at Jebel Faya — The FAY-NE1 shelter sequence
KNUT BRETZKE, NICHOLAS J. CONARD & HANS-PETER UERPMANN
Summary
an archaeological sequence excavated in the south-western part of site FAY-
NE1 at Jebel Faya in the Central Region of Sharjah Emirate. Work between 2009 and 2013 exposed six archaeological horizons
(AHs) and enabled a stratigraphic connection of AHs IV–VI from Faya Shelter with assemblages A, B, and C from the recently
published Faya Terrace sequence. No stratigraphic correlation with the terrace sequence is possible for AH I–AH III. While the
number of artefacts in AHs I and III is currently too small to gain meaningful characterizations of lithic assemblages, AHs II,
IV, V, and VI add important data to the record of Late Pleistocene archaeology in south-east Arabia. Lithic technology in AH II
with plain striking platforms using hard-hammer percussion. Striking characteristics of the lithic assemblage from AH V are the
centripetal Levallois and bifacial reduction. Flakes with large and unprepared striking platforms in addition to pronounced bulbs
of percussion indicate hard-hammer percussion. Archaeological assemblages from Faya Shelter indicate differences in the cultural
background of Jebel Faya’s inhabitants. Given that hunter-gatherer groups would not be able to settle at Faya during periods of
desiccation, the discontinuous cultural sequence from Faya Shelter indicates a complex pattern of connections between Faya and
adjacent regions in southern Arabia and outside Arabia.
Keywords: Palaeolithic, Late Pleistocene, south-east Arabia, lithic artefacts, UAE
Introduction
Although the central part of Sharjah Emirate is
characterized by a favourable geomorphological setting
with high potential for Palaeolithic research (Boucharlat et
al. 1997), it was long thought that this area lacks evidence
for Palaeolithic settlement. The discovery of Pleistocene
artefacts at Jebel Emalah in 2002 (United Arab Emirates
Yearbook 2003, p. 67; www.uaeyearbook.com), however,
began to whittle away this false perception. About four
artefacts from site FAY-NE1 at Jebel Faya established
that humans did indeed occupy the region during the
Pleistocene. Moreover, continuous excavations provided
evidence for repeated human presence in the region during
deposits and multiple layers of archaeological remains
covering a period of about 125,000 years (Armitage et
al. 2011). Despite important discoveries of Palaeolithic
remains from other parts of Arabia, including Yemen
(Amirkhanov 1991; Crassard 2009; Delagnes et al. 2012),
Oman (Rose & Usik 2009; Jagher & Pümpin 2010; Rose
et al. 2011), Saudi Arabia (Petraglia, Drake & Alsharekh
2009; Petraglia et al. 2011; 2012; Crassard & Hilbert
2013; Crassard et al. 2013) and UAE (Scott-Jackson,
Scott-Jackson & Rose 2009; Wahida et al. 2010), in
recent years, FAY-NE1 remains a key site for Palaeolithic
research in Arabia. Given the unique possibility for
dated deposits and the presence of rich archaeological
assemblages, Jebel Faya plays a critical role for building
an Arabian chrono-cultural stratigraphy. The aim of this
paper is to report on the ongoing excavations at Jebel Faya
lithic artefacts excavated under the present rock shelter.
Geographical setting
The archaeological site FAY-NE1 is located at the northern
end of Jebel Faya in the Central Region of the Emirate of
Sharjah, UAE (Fig. 1). Jebel Faya is part of a north–south
oriented anticline running parallel to the Hajar Mountains
Proceedings of the Seminar for Arabian Studies 44 (2014): 69–82
to the east. This striking landscape feature is about 20
km long and composed of Upper Cretaceous limestone
covering a basis of metamorphic rocks.
A c.20 km-wide plain, often called the ‘Inland Basin’
or ‘Dhaid-Madam Plain’ after the two major towns of the
area, lies between the anticline and the Hajar Mountains.
The plain inclines slightly to the west and drains surface
and underground water from the Hajar Mountains into
the Inland Basin. This leads to relatively wet conditions
and subsequently relatively well-developed vegetation
cover in the plain compared to surrounding areas. Under
current climatic conditions, the vegetation of the plain is
characterized by Acacia tortilis, Haloxylon salicornum,
, and
christi (Bretzke et al. 2013). The steep slopes of the
anticline with many deeply incised and winding valleys
add another component to the landscape and provide
from those in the plain. Thus, site FAY-NE1 is located in
an ecotone setting, which would be attractive to mobile
hunter-gatherer groups. The degree of attractiveness of the
Jebel Faya region, however, is coupled with the amount of
water available to plants, animals, and humans. Conditions
decreasing the amount of surface and subsurface water
running from the Hajar Mountains into the plain will
inevitably lead to decreasing biomass in the plain and
decreasing potential for human settlement. Bretzke et al.
(2013) have recently demonstrated that this relationship
exists for the Late Pleistocene occupation of the region,
where human settlement at Faya is limited to phases of
increased precipitation. Periods of desiccation, on the other
hand, lack evidence of human settlement at Jebel Faya.
Excavations at Jebel Faya
Excavations at FAY-NE1 began in 2003 and are continuously
conducted by a joint project of the Department of Early
Prehistory and Quaternary Ecology at the University of
Tübingen, Germany, and the Directorate of Antiquities of
Sharjah’s Department of Culture and Information. During
material. Palaeolithic assemblages include assemblages
A, B, C, D, and E (Armitage et al. 2011). Although
assemblages D and E are stratigraphically clearly separate
detailed discussion of them.
About 150 m2 were excavated with the help of
experienced workmen from Sharjah’s Department of
Antiquities (Fig. 2). The maximum depth of c.5 m under
the present surface was reached in the south-western
plotted using a Leica Total Station (TCR 407) and a
Available age estimations based on OSL indicate that
assemblage C was deposited about 125,000 years ago
FIGURE 1. A.
B. within the Central Region of the Emirate of Sharjah.
Knut Bretzke, Nicholas J. Conard & Hans-Peter Uerpmann70
and assemblage A about 40,000 years ago (Armitage et
al. 2011). No age estimations were currently available
for assemblage B. OSL dating of the sterile sand layer
covering sediments with assemblage A indicates that the
deposition of the sand occurred about 35,000 years ago
(Armitage et al. 2011).
The ‘Faya Shelter’ sequence
sequence of archaeological assemblages was excavated
in the south-western part of the FAY-NE1 excavation in
trenches 37, 39, 38, 42, and 24 (Fig. 2). Trenches 37, 39,
FIGURE 2.
Excavations at Jebel Faya — The FAY-NE1 shelter sequence 71
and 42 are located under the present roof while trench
24 is located on the terrace in front of the rock shelter.
Both areas are separated by large blocks. We present
Faya Shelter separately from ‘Faya Terrace’, the main
excavation in front of the present rock shelter, because
of differences in the depositional environment, changes
in excavation techniques and, probably most importantly,
because the number of archaeological assemblages is
different.
We started work in the Faya Shelter sequence in 2009
and will continue in this part in the coming years. To
gain more detailed information about site taphonomy and
archaeological (AH) and geological horizons (GH) during
excavation. We counted GH and AH independently,
because one GH may contain more than one or no AHs.
To distinguish GHs and AHs we followed the Tübingen
system and used Arabian numerals for geological layers
and roman numerals for archaeological layers. The
surface layer was recorded as GH
with archaeological remains was designated by AH I.
Numbers increase from top to bottom. We also began to
screen excavated sediments systematically through 6 and
3 mm meshes. Systematic screening was introduced to
gain data on the abundance of small and micro-debitage,
which informs us about knapping behaviour and post-
depositional processes.
The geological horizons (GH)
The surface layer (GH 1) under the rock shelter is 8–10
cm thick, dry, and loose (Fig. 3). According to the
Munsell colour chart, GH 1 is medium brown (10YR5/3)
in colour and is mainly composed of gravel-sized angular
I
occurs within the sediments of GH 1.
GH 2 is about 50 cm thick, light brown (10YR7/3) in
colour, compact, and well cemented. The layer is matrix-
fragments of sub-angular to sub-rounded shapes occur
within the matrix. No archaeological remains were
recovered in this layer.
GH 3 is 25 cm thick, pale brown (10YR 8/3) in colour,
well cemented, and very dry. This layer is nearly clast-
FIGURE 3.
Knut Bretzke, Nicholas J. Conard & Hans-Peter Uerpmann72
sand with some silt. Gravel-sized limestone particles
dominate the layer and are often very fragmented. The
many pebbles 5–10 cm in size. The coarse component
is sub-rounded to sub-angular in shape. After the
archaeologically sterile GH 2, GH 3 contained artefacts,
which are assigned to AH II.
Large blocks cover the transition from the rock shelter
to the terrace making it impossible to determine the
stratigraphic relation between archaeological sequences
from both areas. To solve the problem of stratigraphic
correlation between Faya Shelter and Faya Terrace
we decided to invest in the time-consuming removal
of one large block. We used a highly expansive mortar
(FRACT.AG®) to break the massive block. This non-
explosive method allows large blocks to be removed
without destroying the stratigraphic integrity of adjacent
Parallel to the successive removal of the rock, we
continued excavating behind the block and removed
archaeologically sterile GH 4 with a thickness of about 25
cm. Similar to GH 3, GH 4 is again nearly clast-supported
with coarse gravel-sized limestone fragments in a matrix
8/9) in colour and very well cemented and dry. Boulders
between 20 and 30 cm in size occur at the base and mark
a relatively clear boundary to the next layer.
GH 5 is about 100 cm thick, reddish brown (7.5 YR
6/4) in colour, and more matrix-supported than GH 3 or
GH
sand and silt. Limestone fragments of gravel size are
plentiful but less apparent than in GH 3 or GH 4. The large
fraction consists of angular to sub-angular limestone.
GH 5 is dry and less well cemented compared to GH 3
and GH 4. One larger rockfall fragment marks the lower
boundary of GH 5. AH III occurs within GH 5.
The underlying layer GH
extends under the base of the removed block. Sediments
excavated here belong to trench 38 connecting trenches 39
and 24 (Fig. 2). This provides a stratigraphic connection
between Faya Shelter and Faya Terrace. GH 6 is about
35 cm thick and rests on bedrock in the western part of
trench 38. Toward the east, the thickness increases due to
a step in the bedrock (Fig. 3). Since macroscopic sediment
characteristics are homogeneous, no subdivision of
GH 6 is possible. The layer is mostly matrix, which is
some silt and medium sand. Gravel-sized clasts are sub-
angular in shape with a few larger clasts between 10 and
with increasing depth. This fact is well demonstrated by
the tools chosen to excavate. While all other GHs were
excavated using either trowels or picks, we were forced to
excavate GH 6 using hammers and chisels. GH 6 contains
three stratigraphically well-separated archaeological
layers (AH IV–VI).
The archaeological horizons (AH)
ongoing study of lithic technology of the archaeological
assemblages from Faya Shelter. None of the presented
assemblages is currently dated, but samples have been
collected from all layers to develop an independent
chronology using a variety of dating techniques, including
OSL and TL.
I) was discovered
in surface layer GH 1 (Fig. 3). The number of artefacts in
data for a typo-technological characterization.
After we excavated the archaeologically sterile
GH 2, we discovered AH II during excavation of GH 3
in trenches 38, 39, and 42. Lithic artefacts are abundant
(n = 1527) in this layer providing an excellent basis
for studying typo-technological characteristics. One
striking technological feature is the reduction from
opposed platforms (Fig. 4). Other key characteristics are
a relatively high proportion of blades, frequent facetted
platforms, and indications for soft-hammer percussion.
surfaces. One surface was exclusively used to produce
blanks, while the other one often remained unprepared
except in those areas where the opposing platforms were
prepared. Débordant
convexity was prepared by removals knapped parallel to
the direction of production at the lateral edge. Preparation
perpendicular to the main direction of reduction occurs
but only in a few cases. Volumetric reduction is evident
but is only a minor component. The tool assemblage is
dominated by simple lateral retouched pieces and end
scraper variants.
Below the archaeologically sterile GH 4, excavators
recovered the artefacts of AH III in the lower half of
GH 5. Since AH III was exposed in less than 2 m² behind
the large block (Fig. 3), the lithic assemblage currently
available is small (n = 48) and provides little data for a
meaningful characterization. One major goal of the next
excavation campaigns will be to increase the size of the
assemblage from AH III.
Excavations at Jebel Faya — The FAY-NE1 shelter sequence 73
In the upper part of GH 6 we discovered a dense
scatter of lithic artefacts and assigned it to AH IV (n =
block in trench 38 and expands from the western end of
trench 39 to the eastern end of trench 24 (Fig. 3). AH
Faya Shelter and Faya Terrace. Main technological
multiplatform cores with plain striking platforms and
indications for the use of hard hammers (Fig. 5). Tools
occur relatively frequently and are dominated by notches,
end scrapers, and lateral retouched pieces.
Still within GH 6 but after removing about 30 cm
of archaeologically sterile sediments, lithics belonging
to AH V were discovered. Compared to overlaying AH
IV, lithic artefacts are loosely scattered (n = 755). This
being said, AH
also covering the entire excavated area between trenches
39 and 24. The lithic assemblage is characterized by
Although this tendency is clearly visible, there are no
would necessitate a specialized preparation of the
FIGURE 4. Examples of lithic artefacts from AH II: 1–4. 5. 6.
7. 8–11. cores.
Knut Bretzke, Nicholas J. Conard & Hans-Peter Uerpmann74
FIGURE 5. Examples of lithic artefacts from AH IV: 1–3. 4–7. 8–11. cores.
indicating orthogonal reduction from two adjacent and
unfaceted platforms using hard hammer percussion. The
tool assemblage is small and does not provide enough
data to be characterized in detail. The tools mainly
include simple retouched pieces.
Currently the deepest layer from Faya Shelter is AH
VI. Similar to AHs IV and V, AH VI was embedded in
6. Excavations here were very
on experience from other parts of the site, this could
indicate that excavation is approaching bedrock. Lithic
technological characteristics of the assemblage from AH
VI (n = 477) include centripetal Levallois reduction from
cores with hierarchical surfaces and facetted platforms,
Excavations at Jebel Faya — The FAY-NE1 shelter sequence 75
FIGURE 6. Examples of lithic artefacts from AH V: 1. blade; 2–4, 7.
5, 6, 9. retouched pieces; 8. core.
Knut Bretzke, Nicholas J. Conard & Hans-Peter Uerpmann76
FIGURE 7. Examples of lithic artefacts from AH VI: 1, 5, 6. 2, 3. 4.
7–11. cores.
Excavations at Jebel Faya — The FAY-NE1 shelter sequence 77
in addition to a second knapping strategy using bifacial
reduction. Large striking platforms, pronounced bulbs,
and the lack of lips indicate hard-hammer percussion for
both reduction strategies. The tool assemblage includes
bifacially retouched pieces, side scrapers, and lateral
retouched pieces (Fig. 7).
Discussion and conclusion
Excavations under the current rock shelter in the south-
western part of site FAY-NE1 between 2009 and 2013
uncovered a sequence with six archaeological layers. To
understand the relation of this sequence with previously
published assemblages from the terrace in front of
the rock shelter (Armitage et al. 2011), we opened a
connecting trench in 2010. This enabled a stratigraphic
correlation between AHs IV, V, and VI from Faya Shelter
with assemblage A, assemblage B, and assemblage C
from Faya Terrace. No stratigraphic correlation with the
terrace sequence is possible for AH I–AH III.
Given the stratigraphic position of AHs II and III
within the Faya Shelter sequence in addition to the dating
of assemblage A to c.40 ka BP (Armitage et al. 2011), we
argue that AHs II and III were deposited during late MIS
(Marine Isotope Stage) 3 or MIS 2. Contemporaneous
assemblages of southern Arabia are rare and include
1994) and al-Hatab Rockshelter in Oman (Rose & Usik
2009). AH II provides an excellent basis for comparative
studies with these regions, while the AH III assemblage
is currently too small to draw conclusions. Technological
characteristics of AH II include opposed reduction from
laminar products. This assemblage potentially links
Jebel Faya with Upper Palaeolithic assemblages from
Wadi al-Gabre. In contrast, level 2 assemblage from
al-Hatab rock shelter is characterized by unidirectional
reduction from volumetric cores, façonnage production,
and hard-hammer percussion (2009), characteristics that
do not dominate the technological repertoire in AH II.
This suggests that AH II from Faya Shelter and level 2
from al-Hatab rock shelter are unrelated assemblages.
A link between Jebel Faya and southern Oman might
opposed reduction of elongated artefacts and suggest a
possible relationship between Jebel Faya and Dhofar.
Age estimations using OSL for level 2 at al-Hatab rock
shelter indicate a deposition of this level c.13 ka BP.
Site TH.268 is a surface site and provides no material
for an absolute dating. The Upper Palaeolithic from
Wadi al-Gabre in Yemen is estimated to be younger than
31 ka ± 2000 BP (Amirkhanov 1994). Absolute dating
of the sequence for Faya Shelter is under way and will
add important data to the record of Late Pleistocene
archaeology in southern Arabia. With data from different
regions of South Arabia on hand, we will be able to study
spatial and chronological patterns of technological traits
and to draw conclusions about cultural connectivity of
part of the Late Pleistocene.
A stratigraphic connection of layers below AH III
with dated assemblages from Faya Terrace allows us to
conclude that AH IV was deposited about 40,000 years ago,
5e. Within Arabia, there are no other assemblages dated
traits similar to those found in AH VI are available. In
particular the centripetal Levallois reduction is distributed
over large parts of southern Arabia. Examples were found
in al-Kharj, central Saudi Arabia (Crassard & Hilbert
2013), at Lake Mundafan, south-western Saudi Arabia
2009), at Jebel Barakah, Abu Dhabi, UAE (Wahida et al.
2010), and in Ras al-Khaimah and Sharjah, UAE (Scott-
Jackson, Scott-Jackson & Rose 2009) in addition to Jebel
Faya.
While shared lithic technological traits do suggest a
degree of relationship, they do not necessarily provide
evidence that these assemblages are contemporaneous.
Given the dating of centripetal Levallois technologies at
Jebel Faya to MIS 5e, however, a widespread distribution
of this lithic technology is consistent with palaeoclimatic
data suggesting an intensive wet phase in Arabia at the
onset of the Last Interglacial (Burns et al. 1998; 2001).
Under such favourable climatic conditions habitats
useable by hunter-gatherer groups would expand over
large parts of South Arabia and provide the possibility
for a spatial expansion of human groups with a common
cultural background. During MIS 5e, Jebel Faya was
potentially connected to the rest of southern Arabia,
including regions in south-west Arabia.
In contrast to AH VI, technological traits evident
in the lithic assemblage of AH IV are so far unknown
elsewhere in Arabia. This might indicate that Jebel Faya
was disconnected from other parts in South Arabia, in
particular south-western Arabia, and probably reoccupied
from adjacent regions outside Arabia. Potential
candidates would be the so-called ‘Arabo-Persian Gulf
Oasis’ (Rose 2010) or the southern foothills of the
Knut Bretzke, Nicholas J. Conard & Hans-Peter Uerpmann78
southern Zagros Mountains. Rose (2010) has suggested
that eustatic decreases in sea level related to glacial
periods expose land in the Persian Gulf basin that was
occupied by a sizeable human population between 74 ka
BP and 8 ka BP. The southern foothills of the Zagros
Mountain range, on the other hand, might have provided
good living conditions in glacial and interglacial periods.
Hunter-gatherer groups here could cope with variations
in climatic conditions by adjusting the altitude zone
they inhabited. Currently there is not enough evidence
available from both of these regions, thus the origin of
the inhabitants occupying Jebel Faya c.40 ka ago remains
an open question. Moreover, given a still patchy record of
Late Pleistocene archaeology in southern Arabia, the lack
of assemblages featuring technological characteristics of
AH IV from southern Arabia might also be due to the
short history of research rather than indicating culturally
disconnected regions.
The deep archaeological sequence at Jebel Faya
clearly demonstrates the attractiveness of the site’s
location throughout the Late Pleistocene. Despite
this, human occupation at Jebel Faya was limited to
humid periods (Bretzke et al. 2013). During periods of
desiccation humans were hardly able to settle at Jebel
Faya. Since climatic conditions in the region repeatedly
Atkinson et al. 2013; Parton et al. 2013), we expect
a settlement pattern at Jebel Faya characterized by
occupation, abandonment, and reoccupation. Data from
AH I–AH VI indicates cultural discontinuity in the
sequence of archaeological assemblages at Jebel Faya.
The different phases of reoccupation of the interior
of the Oman peninsula were thus probably related to
human populations with different cultural backgrounds
potentially originating from different regions outside the
Oman peninsula. Considering the few points on the map
the question of where these human groups came from is
a complex problem. This will be the next challenge of
Arabian Palaeolithic research after having successfully
evidence from the Palaeolithic during the last decades.
Acknowledgements
We would like to thank the Department of Culture and
Information of the Emirate of Sharjah, the Directorate
of Antiquities, and especially our colleague Sabah Jasim
for permission and their generous support of our work
at Jebel Faya. We thank Andrew W. Kandel for helping
with the geological description, Elham Ghasidian for the
drawings of lithic artefacts, and Alexander Janas for his
technical support during the excavation. We would also
like to thank our colleagues Adrian Parker and Simon
Armitage for the productive collaboration in the context
of palaeoenvironmental research and dating at Faya.
This work was supported by the Heidelberg Academy of
Sciences and Humanities through the research unit ‘The
role of culture in early expansions of humans’.
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Authors’ addresses
Knut Bretzke, University of Tübingen, Department of Early Prehistory and Quaternary Ecology, Burgsteige 11, 72070
Tübingen, Germany and Heidelberg Academy of Sciences and Humanities, Research Unit ‘The role of culture in early
expansions of humans’, Senckenberg Forschungsinstitut, Senckenberganlage 25, D-60325 Frankfurt, Germany.
e-mail [email protected]
Nicholas J. Conard, Eberhard-Karls-Universität Tübingen, Institut für Ur- und Frühgeschichte und Archäologie des
Mittelalters and Tübingen-Senckenberg Center for Human Evolution and Paleoecology, Schloss Hohentübingen,
D-72070 Tübingen, Germany.
e-mail [email protected]
Hans-Peter Uerpmann, Eberhard-Karls-Universität Tübingen, Institut für Ur- und Frühgeschichte, Naturwissenschaftliche
Archäologie, Rümelinstr. 19–23, D-72070 Tübingen, Germany.
e-mail [email protected]
Excavations at Jebel Faya — The FAY-NE1 shelter sequence 81