Vibracore 5V1, Kailua Bay

Uniform to subtly upward-coarsening burrowed to bioturbated, fine- to medium and coarse-grained, volcanic rock fragment-bearing carbonate sand; massive appearing owing probably to extensive bioturbation; local mud-filled burrow structures; light olive gray (5Y8/1); fair to moderate sorting; clasts angular to subrounded and rounded; sand composed mainly of mix of coral fragments (17.5-23.0%), calcareous algal fragments (17.5-21.0%), benthonic foraminifera (13.5-24%) and Halimeda (12.5-16.5%), with notable abundance of highly altered volcanic rock fragment grains (8.5-14.5%) and common carbonate rock fragment grains (7.0-8.5%).