| Core,
section, interval (cm) |
Lithologic unit |
Lithology | Mineral components |
Lithic components |
Bioclastic components | Matrix
and cement |
Texture |
|---|---|---|---|---|---|---|---|
| 183-1139A- | |||||||
| 41R-1, 40-43 cm |
IV
|
Sandypackstone | Altered basaltic glass, vesicular glass | Altered volcanic rocks, unidentified brown grains, polycrystalline quartz | Benthic foraminifers, planktonic foraminifers, echinoderms, shell fragments, ostracodes | Microsparite,
drusy calcite, fibrous calcite (rare), silicification |
Poorly sorted packstone |
| 41R-2, 50-54 cm |
V
|
Sandy grainstone | Alkali feldspar | Basalt(?), opaque grains | Bryozoans, bivalves, echinoderms, benthic foraminifers | Dog-tooth calcite, cement, blocky calcite, syntaxial overgrowth on echinoderms | Well sorted, no matrix |
| 42R-1, 67-70 cm |
V
|
Sandy grainstone | Feldspar | None | Bryozoans, shell fragments, serpulids, echinoderms, benthic foraminifers | Syntaxial overgrowth on echinoderms, dog-tooth calcite, cement | Well sorted, no matrix |