Removal by solution of the calcium carbonate constituents from a rock or sediment, leaving a residuum of noncalcareous material [9, 21]. Synonyms: (French.) decalcification; (German.) Losungsruckstand (Entkalkung); (Greek.) exasvestoses; (Italian.) decalcificazione; (Russian.) dekaljcifikacija; (Spanish.) decalcificacion; (Turkish.) karbonatini giderme; (Yugoslavian.) dekalcifikacija.