Table 2 Atlantis Bank seafloor samples (N = 937)
From: The Atlantis Bank Gabbro Massif, Southwest Indian Ridge
| Lithology | N | % | C-P | 1σ | Brittle | 1σ | Oxide % | 1σ |
|---|---|---|---|---|---|---|---|---|
| Metaperidotite | 115 | 43.4 | 2.3 | 1.5 | ||||
| Plagioclase peridotite | 9 | 3.4 | 1 | 0.5 | ||||
| Lherzolite | 108 | 40.8 | 0.7 | 0.8 | ||||
| Harzburgite | 10 | 3.8 | 1 | 0.5 | ||||
| Talc-soapstone-serpentinite-tremolite schist and breccia | 23 | 8.7 | nd | nd | ||||
| Total peridotites | 265 | 28.3 | 1.4 | 1.4 | ||||
| Olivine websterite | 6 | 0.6 | 0.8 | 0.8 | ||||
| Dunite | 3 | 0.3 | nd | nd | ||||
| Troctolite | 1 | 0.2 | 0.7 | na | ||||
| Olivine gabbro | 156 | 33.9 | 1.2 | 1.2 | 1.2 | 1.4 | ||
| Gabbro | 36 | 7.8 | 1.8 | 1.1 | 2.2 | 1.8 | ||
| Gabbronorite | 21 | 4.6 | 1.6 | 0.7 | 0.7 | 0.4 | ||
| Oxide gabbro | 183 | 39.8 | 1.8 | 1.5 | 0.8 | 1 | 6.7 | 1.5 |
| Metagabbro | 41 | 8.9 | 2.3 | 1.3 | 2.3 | 1.6 | ||
| Felsic vein/plagiogranite | 22 | 4.8 | 0.5 | 0.8 | 0.6 | 0.7 | ||
| Total gabbros | 460 | 49.1 | ||||||
| Aphyric diabase | 86 | 56.2 | ||||||
| Olivine diabase | 5 | 3.3 | ||||||
| Plagioclase-olivine diabase | 18 | 11.8 | ||||||
| Plagioclase diabase | 44 | 28.8 | ||||||
| Total diabase | 153 | 16.3 | 0 | 0 | 1.7 | 1.3 | ||
| Aphyric basalt | 20 | 44.4 | ||||||
| Olivine basalt | 7 | 15.6 | ||||||
| Plagioclase-olivine basalt | 11 | 24.4 | ||||||
| Plagioclase-olivine augite basalt | 1 | 2.2 | ||||||
| Plagioclase basalt | 6 | 13.3 | ||||||
| Total basalt | 45 | 4.8 | ||||||
| Pillow basalt | 19 | |||||||
| Mafic mylonite/cataclasite | 3 | 0.3 | ||||||
| Oxidized sulfide chimney | 2 | 0.2 |