Table T5. In situ confidence index (ISCI) for igneous lithologic units, Site U1376.
|
Lith. unit |
ISCI |
Core, section, interval (cm) |
Unit description |
Strat. unit |
|---|---|---|---|---|
| 330-U1376A- | ||||
| 1 | NA | 5R-3, 122, to 5R-6, 31 | Hyaloclastite breccia | III |
| 2 | 1 | 5R-6, 31, to 5R-7, 2 | Vesicular lobate flow or pillow | III |
| 3 | NA | 5R-7, 2, to 5R-7, 62 | Heterolithic basalt breccia | III |
| 4 | 3 | 5R-7, 62, to 6R-3, 8 | Pillow basalt with thin breccia intervals | III |
| 5 | 3 | 6R-3, 8, to 6R-3, 119 | Pillow basalt | III |
| 6 | 3 | 6R-3, 119, to 6R-4, 38 | Pillow basalt with thin breccia intervals | III |
| 7 | NA | 6R-4, 38, to 6R-4, 95 | Basalt breccia and hyaloclastite | III |
| 8 | 1 | 6R-4, 95, to 6R-4, 132 | Basalt (clast) | III |
| 9 | NA | 6R-4, 132, to 6R-5, 7 | Basalt breccia and hyaloclastite | III |
| 10 | 1 | 6R-5, 7, to 6R-5, 75 | Basalt (clast) | III |
| 11 | NA | 6R-5, 75, to 6R-6, 87 | Basalt breccia and hyaloclastite | III |
| 12 | 1 | 6R-6, 87, to 6R-7, 22.5 | Basalt (clast) | III |
| 13 | NA | 6R-7, 22.5, to 6R-8, 40 | Basalt breccia and hyaloclastite | III |
| 14 | 2 | 7R-1, 0, to 8R-4, 135 | Pillow basalt breccia and hyaloclastite | III |
| 15 | 3 | 8R-5, 0, to 13R-4, 59 | Lava flow | III |
| 16 | NA | 13R-4, 59, to 14R-2, 84 | Hyaloclastite breccia | III |
| 17 | 3 | 14R-2, 84, to 14R-4, 47 | Massive basalt | III |
| 18 | 1 | 14R-4, 47, to 14R-4, 55 | Intrusive sheet | Dike |
| 19 | NA | 14R-4, 55, to 15R-1, 120 | Hyaloclastite breccia | IV |
| 20 | 3 | 15R-2, 0, to 15R-2, 78 | Intrusive sheet | Dike |
| 21 | NA | 15R-2, 78, to 17R-2, 93 | Hyaloclastite breccia | IV |
| 22 | 1 | 17R-2, 93, to 17R-2, 145 | Lobate flow or fragment | IV |
| 23 | NA | 17R-2, 145, to 17R-3, 23 | Hyaloclastite breccia | IV |
| 24 | 2 | 17R-3, 23, to 17R-4, 37 | Lobate flow or fragment | IV |
| 25 | 0 | 17R-4, 37, to 17R-4, 44 | Lobate flow or fragment | IV |
| 26 | NA | 18R-1, 0, to 18R-1, 87.5 | Heterolithic basalt breccia | IV |
| 27 | 0 | 18R-1, 87.5, to 18R-1, 108 | Lobate flow or fragment | IV |
| 28 | NA | 19R-1, 0, to 19R-1, 92 | Hyaloclastite breccia | IV |
| 29 | 3 | 19R-1, 92, to 19R-2, 128 | Lobate flow or fragment | IV |
| 30 | NA | 19R-2, 128, to 21R-2, 76 | Heterolithic basalt breccia | IV |
| 31 | 1 | 21R-2, 76, to 21R-3, 61 | Vesicular basalt lobate flow or fragment | IV |
| 32 | NA | 21R-3, 61, to 21R-4, 31.5 | Volcanic breccia and hyaloclastite | IV |
| 33 | 2 | 21R-4, 31.5, to 21R-5, 89 | Lobate flow or fragment | IV |
| 34 | NA | 21R-5, 89, to 22R-2, 21 | Heterolithic basalt breccia with hyaloclastite matrix | IV |
| 35 | 1 | 22R-2, 21, to 22R-2, 67 | Lobate flow or fragment | IV |
| 36 | NA | 22R-2, 67, to 22R-3, 9 | Heterolithic basalt breccia with hyaloclastite matrix | IV |
| 37 | 1 | 22R-3, 9, to 22R-3, 82 | Vesicular basalt lobate flow or fragment | IV |
| 38 | NA | 22R-3, 82, to 22R-3, 106 | Volcanic breccia with hyaloclastite matrix | IV |
| 39 | 1 | 22R-3, 106, to 22R-3, 137 | Lobate flow or fragment | IV |
| 40 | NA | 22R-3, 137, to 22R-6, 10 | Volcanic breccia with hyaloclastite matrix | IV |
| 41 | 3 | 22R-6, 10, to 23R-6, 19 | Intrusive sheet | Dike |
| 42 | NA | 23R-6, 19, to 23R-6, 75 | Basalt breccia | IV |
ISCI: 0 = unlikely to be in situ, 1 = could be in situ, 2 = probably in situ, 3 = highly likely to be in situ, NA = not applicable. See “Igneous petrology and volcanology” in the “Methods” chapter (Expedition 330 Scientists, 2012a) for a full explanation of the ISCI.
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