T240 Hypogenic Karst: Shedding Light on Once Poorly Understood Hydrologic and Morphologic Features
Tuesday, 7 October 2008
8:00 AM - 12:00 PM
Folia: A Hypogenic Degassing Origin
Paper number: T240-15
Program: Technical Sessions
Time: 11:30 AM – 11:45 AM
Authors
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Philippe Audra Presenting AuthorEngineering School of Nice - Sophia Antipolis University, Biot, N/A
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Ludovic MocochainAix-Marseille University, Aix-en-Provence Cedex 4, N/A
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Jean-Yves BigotBarcelonnette, N/A
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Jean-Claude NobécourtVence, N/A
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.