Abstract

The results of a questionnaire on the terminology of limestone and related rocks indicate where usage is reasonably uniform and where it is sharply divided. From majority usage it is possible to prepare tentative definitions for the following compositional and structural terms: carbonate rock, calcareous (adjective) limestone, dolomite (the rock) or dolostone, dolomitic limestone, calcitic dolomite or dolostone, marl, marlstone, oolite, ooid, coquina, coquinite, and coquinoid (adjective). Usage on terms expressing grain size and on terms expressing genesis is not yet uniform enough to warrant proposing formal definitions, but further debate on these matters should be fruitful, if focused on the distinctions that need to be made among the rocks themselves.

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