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U.S. Geological Survey
Open-File Report 03-441

DATA REPORT: Geology of Reef-Front Carbonate Sediment Deposits around Oahu, Hawaii

North coast vibracores sketches, descriptions, and photographs

Home > data > vibracores > sketches, descriptions & photographs > north coast > vibracores 34V1 and 35V1

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Vibracore 34V1, north coast
Uniform succession of vaguely-laminated to bioturbated, fine- to medium-grained, foraminiferal/algal/coral carbonate sand: light brownish gray (5YR6/1); moderate sorting; minor fragmented pecten bivalves (Chlamys sp.); sand size clasts angular to rounded; composed mainly of a mix foraminifera (36.0%), calcareous algae (20.5%) and coral fragments (17.0%); common carbonate rock fragments (6.5%) and Halimeda (8.0%); minor volcanic rock fragments (2.0%) and mollusks (3.0%).
Vibracore 35V1, north coast
Uniform succession of burrowed to bioturbated, fine-to medium-grained, foraminiferal/algal/coral carbonate sand: light olive gray (5Y6/1); moderate sorting; minor fragmented pecten bivalves (Chlamys sp.); sand size clasts angular to rounded; composed mainly of a mix of foraminifera (29.5%), calcareous algae (29.5%) and coral fragments (18.0%) ; with common carbonate rock fragments (9.0%) and Halimeda (4.0%); minor echinoid fragments (1.0%) and mollusks (2.5%).

Labelled sketch of core showing bedding and other features
High detail photo of core

 
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last modified 15 December 2003 (cad)

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