Vibracore 29V1, north coast

Upward-fining succession of burrowed to bioturbated, fine to medium-grained, algal/coral/foraminifera carbonate sand: moderate yellowish brown (10YR7/4) in lower part grading up to light olive gray (5Y6/1); moderate sorting; common large (1.5-3.0 cm), pecten bivalves (Chlamys sp.) oriented subparallel to bedding; sand size clasts angular to rounded; composed mainly of a mix of calcareous algae (31.0-36.5%), coral fragments (26.5-32.0%) and foraminifera (17.0-19.5%); common volcanic rock fragments (4.0-4.5%), carbonate rock fragments (5.0%) and Halimeda (3.0-3.5%); minor echinoid fragments (1.5-4.5%). Upward-fining succession of vaguely-laminated to bioturbated, fine to medium-grained, algal/coral/foraminifera carbonate sand: pale yellowish brown (10YR6/2) to light brownish gray (5YR6/1); moderate sorting; common large (1.5-2.5 cm), disarticulated pecten bivalves (Chlamys sp.), some oriented subparallel to bedding; sand size clasts angular to rounded; composed mainly of a mix of calcareous algae (29.5-35.5%), coral fragments (24.0-35.0%) and foraminifera (16.5-19.5%); abundant volcanic rock fragments (6.0-10.5%); common Halimeda (2.0-4.5%); minor echinoid fragments (2.0-3.0%) and mollusks (1.5%).