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Rock 6 was collected from the only outcrop (exposure) of rock observed on Dive 3464. The sediments in the area are comrised of coral rubble and foraminifera tests (see Rock 5). Rock 6 (below) appears to be a loosely-cemented version of the foram-rich sediment. It crumbles easily and is not nearly as well-cemented as the foraminiferan limestone found at Barrelfish Cliff, Wreckfish Cave, and Sponge Cliff.
(scale bar divisions are each 1 cm)

Collected on JSLII Dive 3464, Popenoe Coral Mounds, Blake Plateau (2567 ft).