Table T3. Summary of lithologic units at Site 1137.
| Lithologic unit | Basement unit | Core interval | Depth (mbsf) |
Thickness (m) | Age | Lithology | Interpretation |
|---|---|---|---|---|---|---|---|
| I | 1R-1, 0 cm, to 1R-CC, 10 cm | 0-9.50 | 9.50 | Pleistocene | Foraminifer-bearing diatom ooze | Pelagically deposited sediment—deep marine | |
| II | 2R-1, 0 cm, to 21R-CC, 10 cm | 9.50-199.50 | 190.00 | Miocene to Eocene | Nannofossil ooze | Pelagically deposited sediment—deep marine | |
| III | 22R-1, 0 cm, to 24R-1, 71 cm | 199.50-219.51 | 19.91 | Campanian | Gray to green glauconite-bearing sandy packstone | Mixed biogenic and altered volcanic sand deposited in a neritic environment | |
| IV | 1-10 | 24R-1, 71 cm, to 46R-3, 36 cm | 219.51-370.17 | 150.76 | Cretaceous(?) Campanian or older | Basement—basalt and sedimentary rocks | Volcanic extrusions and fluvial and marine deposition |
| IV | 5 | 33R-1, 122 cm, to 33R-4, 121 cm | 286.72-291.01 | 4.29 | Cretaceous(?) Campanian or older | Volcanic lithic siltstone and sandstone | Fluvial(?)—braided river |
| IV | 6 | 33R-4, 121 cm, to 37R-3, 0 cm | 291.01-322.80 | 31.79 | Cretaceous(?) Campanian or older | Volcanic conglomerate | Fluvial(?)—braided river |
| IV | 9 | 41R-1, 103 cm, to 44R-4, 49 cm | 344.03-360.67 | 16.64 | Cretaceous(?) Campanian or older | Crystal-vitric tuff | Debris flow(?) in marine environment |