Beach rocks of the Central West Coast of India

Along the central west coast of India several beach rock exposures have been observed in the intertidal zone, as well as 2–4 m above the present day high water line. Beach rock has almost the same general composition as the loose beach sand over which it lies. It takes the broad morphology of the intertidal zone of the beach in which it developed and it shows similar internal structures. Most of it is medium to coarse grained but some is fine to medium grained. The constituents are calcite, aragonite, quartz, feldspar, traces of black (heavy) minerals, rock fragments and shells. Carbonate reaches up to 97% (% wt).