Vibracore 21V1, Leeward coast

Uniform succession of massive-appearing, bioturbated, fine- to medium-grained, algal/coral/foraminiferal carbonate sand: massive appearing (no obvious sedimentary structures) owing probably to extensive bioturbation; olive gray to medium gray (5Y4/1 to N4); moderate sorting (2-5% scattered shell fragments; 2-5 mm); sand size clasts subangular to rounded; composed mainly of a mix of calcareous algae (29.0-38.5%), coral fragments (28.5-36.5%) and foraminifera (14.5-18.0%); common Halimeda (3.5-6.0) and carbonate rock fragments (5.5%); minor volcanic rock fragments (1.5-2.0%) and echinoid fragments (1.5-2.5%); minor distinct specimens of the solitary coral Cycloseris fragilis.