240-14 Folia: A Hypogenic Degassing Origin

See more from this Division: Topical Sessions
See more from this Session: Hypogenic Karst: Shedding Light on Once Poorly Understood Hydrologic and Morphologic Features

Tuesday, 7 October 2008: 11:30 AM
George R. Brown Convention Center, 332BE

Philippe Audra, Polytech'Nice-Sophia, Engineering School of Nice - Sophia Antipolis University, Biot, France, Ludovic Mocochain, CEREGE, Aix-Marseille University, Aix-en-Provence Cedex 4, France, Jean-Yves Bigot, Barcelonnette, France and Jean-Claude Nob├ęcourt, Vence, France
Abstract:
Folia are calcite deposits resembling inverted rimstones occurring in saturated pools. Based on morphological studies in Adaouste Cave (Provence, France) and on studies in worldwide sites, we propose a new genetic model for folia, close to the one of Green [1991]. Folia occurrence is interpreted as an indicator of hypogenic degassing just below the water table. The association with bubble trails results of combined processes made of generalized calcite deposition in saturated pools and corrosion along bubble trails.

See more from this Division: Topical Sessions
See more from this Session: Hypogenic Karst: Shedding Light on Once Poorly Understood Hydrologic and Morphologic Features