Glass and Mineral Chemistry of Northern Central Indian Ridge Basalts: Compositional Diversity and...
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Transcript of Glass and Mineral Chemistry of Northern Central Indian Ridge Basalts: Compositional Diversity and...
(a) (b)
(c) (d)
(e) (f)
(g) (h)
0.4 mm 0.4 mm
0.4 mm
0.4 mm
1 mm 1 mm
1 mm
0.2 mm
A
B
C
D
An 90 60 30 Ab
Homogeneous glassy matrix
Plag microlites
Homogeneous
glassy
matrix
Plag microlites
Mg#Mg#
Plag
Oliv
Cpx
Cpx
Plag
0.80
0.70
0.60
0.500.55 0.65 0.700.600.50 0.55 0.65 0.700.600.50
0.25
0.15
0.05
0.00
0.10
0.20
(a) (b)
Cao
/Al
O2
3
KO
/Na
O2
2
0.8
1.2
1.6
2
5678910
MgO
4
3
2
110 9 8 7 6 5
MgO
5678910
MgO5678910
MgO
5678910
MgO
5678910
MgO
20
18
16
14
12
12
11
10
9
1
0.8
0.6
0.4
0.2
0
0.45
0.35
0.25
0.15
0.05
TiO
2A
lO
23
CaO
Na
O2
KO
2
PO
25
(a) (b)
(c)(d)
(e) (f)
0
100
200
300
0.40.50.60.70.8
150
200
250
300
350
0.40.50.60.70.8Mg#
0
10
20
30
40
50
0.40.50.60.70.8
Mg#
0
40
80
120
160
0.40.50.60.70.8
Mg#
(a) (b)
(c) (d)
Cr
(10
)6
Ni
(10
)6
Zr
(10
)6
Y(1
0)
6
Mg#
Ba Rb Th U NbLa Ce Sr Nd Sm Zr Hf Eu Ti Dy Y Yb LuTb La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Yb Lu1
10
100(a) (b)
1
10
100
Rock
/chondri
te
PM
N/o
rmal
ised
Di
Ol Opx Qz
20kbar
15kbar
10kbar
1bar
ol
ol opx
au
ol opx
ol opx
au
au
opx
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