Open Access
Table 2
Representative analyses of olivines form study area; (b) indicates border and (c) indicates core.
| Rock type | Basanite | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| samples | BIW88A | SAF88 | Sot22 | |||||||||||||||||||
| Analyses | C1-b | C2 (c) | C2(b) | C2(c) | C3 | C3 | C4(b) | C4(c) | C4(c) | C1 | C3 | C2 | C2(c) | C2(b) | C1(b) | C1(c) | C3 | C4(b) | C4(c) | C5 | C6(c) | C6(b) |
| SiO2 | 39.90 | 39.75 | 41.28 | 41.48 | 41.64 | 41.75 | 40.71 | 41.32 | 41.35 | 38.19 | 39.34 | 40.16 | 40.55 | 39.70 | 39.84 | 39.35 | 40.20 | 40.26 | 40.39 | 38.58 | 38.97 | 40.17 |
| TiO2 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Al2O3 | 0.00 | 0.10 | 0.00 | 0.07 | 0.00 | 0.06 | 0.05 | 0.00 | 0.06 | 0.08 | 0.02 | 0.02 | 0.05 | 0.03 | 0.04 | 0.04 | 0.06 | 0.02 | 0.04 | 0.08 | 0.00 | 0.00 |
| Cr2O3 | 0.00 | 0.02 | 0.01 | 0.04 | 0.03 | 0.06 | 0.01 | 0.03 | 0.03 | 0.01 | 0.01 | 0.02 | 0.04 | 0.02 | 0.02 | 0.00 | 0.03 | 0.02 | 0.03 | 0.00 | 0.01 | 0.03 |
| FeO | 18.34 | 17.61 | 9.15 | 8.68 | 8.83 | 8.90 | 10.34 | 10.08 | 9.69 | 25.71 | 20.04 | 15.52 | 14.10 | 16.42 | 17.13 | 19.54 | 15.03 | 14.52 | 15.75 | 21.91 | 20.83 | 14.24 |
| MnO | 0.35 | 0.21 | 0.18 | 0.19 | 0.15 | 0.16 | 0.06 | 0.16 | 0.05 | 0.57 | 0.48 | 0.27 | 0.25 | 0.28 | 0.21 | 0.29 | 0.25 | 0.22 | 0.09 | 0.29 | 0.23 | 0.20 |
| MgO | 41.49 | 42.21 | 48.94 | 49.34 | 49.09 | 49.48 | 48.02 | 48.85 | 48.34 | 35.83 | 40.51 | 43.17 | 44.77 | 42.27 | 42.42 | 40.37 | 43.93 | 44.45 | 43.54 | 38.34 | 39.93 | 45.05 |
| NiO | 0.14 | 0.10 | 0.45 | 0.30 | 0.44 | 0.47 | 0.30 | 0.45 | 0.34 | 0.05 | 0.21 | 0.17 | 0.21 | 0.17 | 0.25 | 0.23 | 0.24 | 0.23 | 0.20 | 0.05 | 0.06 | 0.14 |
| CaO | 0.31 | 0.09 | 0.12 | 0.13 | 0.06 | 0.08 | 0.10 | 0.10 | 0.12 | 0.38 | 0.07 | 0.36 | 0.28 | 0.32 | 0.11 | 0.04 | 0.23 | 0.27 | 0.17 | 0.23 | 0.14 | 0.20 |
| Na2O | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.03 | 0.00 | 0.02 | 0.00 | 0.01 | 0.00 | 0.00 | 0.01 | 0.00 | 0.02 | 0.02 | 0.00 | 0.03 | 0.05 | 0.00 |
| K2O | 0.00 | 0.00 | 0.06 | 0.00 | 0.06 | 0.00 | 0.02 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.01 | 0.02 | 0.00 | 0.01 | 0.00 | 0.03 | 0.02 | 0.00 |
| Total | 100.60 | 100.18 | 100.25 | 100.36 | 100.33 | 100.98 | 99.79 | 101.12 | 100.00 | 100.92 | 100.69 | 99.71 | 100.25 | 99.22 | 100.04 | 99.89 | 100.00 | 100.10 | 100.34 | 99.55 | 100.29 | 100.13 |
| Si | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 1.00 | 1.01 | 1.01 | 1.00 | 1.01 | 1.02 | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 1.00 | 1.01 |
| Ti | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Al | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Cr | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Fe2+ | 0.39 | 0.37 | 0.19 | 0.18 | 0.18 | 0.18 | 0.21 | 0.21 | 0.20 | 0.57 | 0.43 | 0.33 | 0.29 | 0.35 | 0.36 | 0.42 | 0.32 | 0.30 | 0.33 | 0.48 | 0.45 | 0.30 |
| Mn | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.00 | 0.01 | 0.01 | 0.00 | 0.00 | 0.01 | 0.01 | 0.00 |
| Mg | 1.57 | 1.60 | 1.78 | 1.79 | 1.78 | 1.78 | 1.77 | 1.77 | 1.76 | 1.40 | 1.54 | 1.63 | 1.67 | 1.61 | 1.60 | 1.55 | 1.65 | 1.66 | 1.63 | 1.49 | 1.53 | 1.68 |
| Ni | 0.00 | 0.00 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Ca | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.01 | 0.01 | 0.01 | 0.00 | 0.00 | 0.01 | 0.01 | 0.00 | 0.01 | 0.00 | 0.01 |
| Total | 2.99 | 2.99 | 2.99 | 2.99 | 2.99 | 2.99 | 3.00 | 3.00 | 2.99 | 3.00 | 3.00 | 2.99 | 2.99 | 2.99 | 2.99 | 2.99 | 2.99 | 3.00 | 2.99 | 3.00 | 3.00 | 3.00 |
| Fo | 79.83 | 80.85 | 90.34 | 90.84 | 90.69 | 90.68 | 89.17 | 89.48 | 89.85 | 70.85 | 77.87 | 82.97 | 84.76 | 81.86 | 81.35 | 78.40 | 83.67 | 84.31 | 83.05 | 75.48 | 77.17 | 84.76 |
| Fa | 19.79 | 18.92 | 9.47 | 8.96 | 9.15 | 9.15 | 10.77 | 10.36 | 10.10 | 28.51 | 21.61 | 16.73 | 14.97 | 17.84 | 18.42 | 21.28 | 16.06 | 15.45 | 16.85 | 24.19 | 22.58 | 15.03 |
| Tp | 0.38 | 0.23 | 0.19 | 0.20 | 0.16 | 0.17 | 0.06 | 0.17 | 0.05 | 0.64 | 0.52 | 0.29 | 0.27 | 0.31 | 0.23 | 0.32 | 0.27 | 0.24 | 0.10 | 0.32 | 0.25 | 0.21 |
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