Table T2. Lithostratigraphic units, location in recovered cores, main lithology, and remarks, Site U1318.
Unit | Subunit | Hole U1318A | Hole U1318B | Hole U1318C | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Core, section, interval (cm) |
Depth (mbsf) | Core, section, interval (cm) |
Depth (mbsf) | Core, section, interval (cm) |
Depth (mbsf) | ||||||||
Top | Bottom | Top | Bottom | Top | Bottom | Top | Bottom | Top | Bottom | Top | Bottom | ||
307-U1318A- | 307-U1318A- | 307-U1318B- | 307-U1318B- | 307-U1318C- | 307-U1318C- | ||||||||
1 | 1A | 1H-1, 0 | 4H-5, 24 | 0 | 33.3 | 1H-1, 0 | 5H-2, 2 | 0 | 35.03 | 1H-1, 0 | — | 0 | — |
1B | 4H-5, 24 | 7H-3, 60 | 33.3 | 61.7 | 5H-2, 2 | 8H-1, 0 | 35.03 | 62 | — | — | — | — | |
1C | 7H-3, 60 | 9H-3, 22 | 61.7 | 78.9 | 8H-1, 0 | 10H-1, 100 | 62 | 82 | — | 3H-1, 45 | — | 79.9 | |
2 | 9H-4, 0 | 10H-2, 0 | 80.7 | 86.7 | 10H-1, 100 | 10H-4, 72 | 82 | 86.2 | 3H-1, 45 | 3H-4, 18 | 79.9 | 84.2 | |
3 | 3A | 10H-2, 0 | 14H-4, 51 | 86.7 | 128.3 | 10H-4, 72 | 14H-CC, 16 | 86.2 | 127.4 | 3H-4, 18 | 8X-2, 16 | 84.2 | 127.3 |
3B | 14H-4, 51 | — | 128.3 | — | 14H-CC, 16 | 21X-3, 114 | 127.4 | 190.3 | 8X-2, 16 | — | 127.3 | — | |
3C | — | — | — | — | 21X-3, 114 | 27X-CC, 29 | 190.3 | 241 | — | — | — | — |
Unit | Subunit | Lithology | Comments |
---|---|---|---|
1 | 1A | Silty clays with dropstone | Massive interbedded with laminated horizons |
1B | Silty clays | Laminated interbedded with massive horizons | |
1C | Sandy clays | Alternation of laminated and massive horizons | |
2 | Fine sands and brownish clays with dropstone | Grading basal conglomerate (angular phosphatic? gravels) just above the boundary | |
3 | 3A | Silty clays with silts and fine sands overlain by oyster bed at the top | Shells are infilled with phosphatic mineral; sandy beds are abundant in the upper part; highly variable in grain size, carbonate contents, and color |
3B | Silty clays | Massive throughout the subunit | |
3C | Silty clays to fine sands | Sandy beds decrease upward; dolomite beds in the lower part |
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