reef rock

reef rock

[′rēf ‚räk]
(petrology)
A hard, unstratified rock composed of sand, shale, and the calcareous remains of sedentary organisms, cemented by calcium carbonate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
For experimental purposes, we haphazardly collected 15 large ([approximately equal to]0.25 [m.sup.2]) slabs of reef rock dominated by the Choneplax/Porolithon community on 1 March 1987 from within the primary study area located on the CBC algal crest [ILLUSTRATION FOR FIGURE 1 OMITTED].
He tries playing further and further away, and finally rows out to sea, only to find that the bell buoy marking reef rocks in foggy weather is missing!