|
MORB
domain
|
Core, section, interval (cm)*
|
Core, section, interval (cm)†
|
Major element oxides (wt%)
|
Ni (ppm)
|
FeO‡/MgO
|
mg#
|
Method
|
Reference
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
SiO2
|
TiO2
|
Al2O3
|
Fe2O3‡
|
FeO‡
|
MnO
|
MgO
|
CaO
|
Na2O
|
K2O
|
P2O5
|
Total
|
||||||||
|
|
187-1155A- | 187-1155A- |
|
|
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|
|
| Indian | 5R-1, 13-17 | 5R-1, 20-23 | 51.96 | 1.69 | 14.88 | 11.05 | 9.94 | 0.18 | 8.01 | 10.81 | 3.15 | 0.25 | 0.22 | 102.20 | 99 | 1.24 | 0.59 | Shipboard ICP-AES | Shipboard Scientific Party (2001) |
|
|
187-1155B- | 187-1155B- |
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
| Indian | 4R-2, 65-67 | 4R-2, 22-26 | 50.18 | 1.06 | 17.40 | 8.71 | 7.84 | 0.15 | 8.18 | 11.91 | 2.68 | 0.25 | 0.11 | 100.62 | 156 | 0.96 | 0.65 | Shipboard ICP-AES | Shipboard Scientific Party (2001) |
|
|
187-1156A- | 187-1156A- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Indian | 2R-4, 14-16 | 2R-3, 133-136 | 51.66 | 1.41 | 15.63 |
|
8.71 | 0.16 | 8.29 | 11.63 | 2.69 | 0.12 | 0.14 | 100.45 | 111.7 | 1.05 | 0.63 | EPMA/ICP-AES | Russo (this volume) |
| Indian | 3R-2, 51-54 | 3R-2, 19-22 | 50.47 | 1.29 | 16.60 | 8.88 | 7.99 | 0.15 | 8.03 | 11.81 | 2.73 | 0.23 | 0.13 | 100.32 | 136 | 1.00 | 0.64 | Shipboard ICP-AES | Shipboard Scientific Party (2001) |
|
|
187-1161A- | 187-1161A- |
|
|
|
|
|
|
|
|
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|
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|
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|
| Indian | 3R-1, 39-42 | 3R-1, 68-69 | 52.23 | 1.46 | 15.62 | 9.53 | 8.58 | 0.16 | 8.03 | 11.07 | 2.92 | 0.11 | 0.17 | 101.29 | 111 | 1.07 | 0.63 | Shipboard ICP-AES | Shipboard Scientific Party (2001) |
|
|
187-1160B- | 187-1160B- |
|
|
|
|
|
|
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| Pacific | 4R-1, 48-52 | 4R-1, 59-62 | 49.20 | 1.19 | 15.34 | 9.83 | 8.85 | 0.15 | 8.86 | 11.93 | 2.67 | 0.07 | 0.09 | 99.99 | 129 | 1.00 | 0.64 | Shipboard XRF | Shipboard Scientific Party (2001) |
| Pacific | 9R-2, 11-14 | 9R-1, 125-129 | 49.45 | 1.04 | 15.77 | 9.48 | 8.53 | 0.13 | 8.90 | 12.25 | 2.50 | 0.04 | 0.07 | 100.34 | 104 | 0.96 | 0.65 | Shipboard XRF | Shipboard Scientific Party (2001) |
Notes: MORB = mid-ocean-ridge basalt. EPMA = electron probe microanalysis, XRF = X-ray fluorescence. * = olivine composition (this study). † = start compositions for calculation of melt compositions equilibrated with olivine composition. ‡ = total Fe as Fe2O3 for shipboard inductively coupled plasma-atomic emission spectroscopy (ICP-AES) analysis; for calculations, these values were recalculated to total Fe as FeO.