Table T7. Whole-rock major and trace element composition, Hole U1377A.
|
Hole:
|
330-U1377A- |
|---|---|
|
Core, section:
|
3R-2 |
|
Piece:
|
1 |
|
Interval (cm):
|
2–4 |
|
Top depth (mbsf):
|
16.6 |
|
Strat. unit:
|
III |
| Major element oxide (wt%): | |
| SiO2 | 54.27 |
| TiO2 | 3.80 |
| Al2O3 | 18.40 |
| Fe2O3T | 6.92 |
| MnO | 0.04 |
| MgO | 2.96 |
| CaO | 6.09 |
| Na2O | 3.92 |
| K2O | 1.76 |
| P2O5 | 0.51 |
|
Total:
|
98.68 |
| LOI | 3.0 |
| Major element oxide (wt%) normalized to 100 wt%: | |
| SiO2 | 55.00 |
| TiO2 | 3.85 |
| Al2O3 | 18.65 |
| Fe2O3T | 7.01 |
| MnO | 0.04 |
| MgO | 3.00 |
| CaO | 6.18 |
| Na2O | 3.97 |
| K2O | 1.79 |
| P2O5 | 0.52 |
|
Total:
|
100.00 |
| Mg# | 49.9 |
| Trace element (ppm): | |
| Ba | 240 |
| Sr | 566 |
| Zr | 280 |
| Y | 24 |
| V | 281 |
| Sc | 29 |
| Cu | 95 |
| Zn | 28 |
| Co | 122 |
| Cr | 686 |
| Ni | 421 |
LOI = weight loss on ignition at 930°C. For this sample, the chemical analysis was performed before LOI measurement (see text). Fe2O3T = total iron expressed as Fe2O3. Mg# = 100 × Mg2+/(Mg2+ + Fe2+), assuming that Fe2O3/FeO = 0.15.
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