Vibracore 38V1, south coast

Upward-fining unit of coral/algal/foraminiferal carbonate sand with pebble-size (0.5 to >5.0 cm) coral/algal clasts at base: olive to yellowish gray (5Y4/1-8/1); very poorly sorted, pebbly, fine- to very coarse-grained sand at base (sharp, scour/depositional contact) grading to poorly-sorted, fine- to medium-grained sand in upper part; massive-appearing (bioturbated); rounded to well-rounded pebbles and angular to rounded sand-size clasts; pebbly, coarse-grained lower portion composed mainly of a mix of coral fragments (38.5%), calcareous algal fragments (23.0%) and carbonate rock fragments (23.5%); upper sandy portion mainly coral fragments (27.5%), calcareous algae (26.5%) and foraminifera (23.5%); common carbonate rock fragments (4.5%), Halimeda (3.5%) and mollusks (5.5%).
Massive-appearing (bioturbated) succession of very fine- to coarse-grained, coral/algal/foraminiferal carbonate sand: light olive gray (5Y6/1); vague bedding indicated by oriented shell fragments; moderately well sorted; sand size clasts angular to rounded; composed mainly of a mix of coral fragments (29.0%), calcareous algae (24.5%) and foraminifera (10.5%); with abundant unidentifiable grains (19.5%) owing to very fine grain size; common carbonate rock fragments (6.5%) and Halimeda (6.5%).