UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary of Karst and Cave Terms

1. Rock composed of sand grains and/or sand-sized shell fragments cemented by calcium carbonate, commonly formed very rapidly on some beaches in tropical and sub-tropical areas. Beachrock generally occurs as thin beds between bedding planes that dip seawards at angles similar to those of the beach slope [9]. 2. A friable to indurated rock consisting of sand grains of various minerals cemented by calcium carbonate; occurs in thin beds dipping seaward at less than 15N. Also known as beach sandstone [10].