beachrock


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beachrock

[′bēch‚räk]
(petrology)
A friable to well-cemented rock made of calcareous skeletal debris that is cemented together by calcium carbonate.
References in periodicals archive ?
Bedrock has been reached in all of the mined area, enabling recovery of both the older diamond deposits below the clay and beachrock false footwall layers and the younger deposit above the false footwall.
Aragonite-cemented sandstone from outer continental shelf off Delaware Bay: submarine lithification mechanism yields product resembling beachrock.
The significance of the item rests in the fact that obsidian, volcanic or sedimentary rocks other than coral limestone or beachrock (= cemented sand) are not accessible at or near the surface of any of the Marshall Islands.