dripstone

views updated May 08 2018

dripstone (flowstone, speleothem) Calcium carbonate rock deposited in caves by the precipitation of calcite from water as excess dissolved carbon dioxide is diffused into the atmosphere. Dripstone takes various forms, including stalactites, helictites (having spiral form), curtains, ribbons, and stalagmites.

dripstone

views updated May 11 2018

dripstone. Hood-moulding or label, especially in Gothic work on an exterior, convex on top and returning to the wall underneath by deep hollows or throatings. If used inside a building label or hood-mould would be the preferred terms.