Vibracore 37V1, north coast

Uniform to subtly upward-coarsening succession of massive-appearing (bioturbated), fine- to medium-grained, algal/foraminiferal/coral carbonate sand: light olive gray (5Y6/1); moderate sorting; minor large (1.5-2.5 cm), disarticulated and fragmented pecten bivalves (Chlamys sp.), some oriented sub-parallel to bedding); locally large (3-5 cm) algal nodules; sand size clasts angular to rounded; composed mainly of a mix of calcareous algae (36.5-38.0%), foraminifera (23.0-25.0%) and coral fragments (20.5-21.5%); common carbonate rock fragments (6.0-8.5%) and Halimeda (2.5-6.5%); minor echinoid fragments (2.0-2.5%) and mollusks (1.5%).