Speleothem
Structure formed in a cave by the deposition of minerals from water
A speleothem (; from Ancient Greek σπήλαιον (spḗlaion) 'cave' and θÎμα (théma) 'deposit') is a geological formation made by mineral deposits that accumulate over time in natural caves. Speleothems most commonly form in calcareous caves due to carbonate dissolution reactions. They can take a variety of forms, depending on their depositional...