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Glacier extents within Briançonnais Alps (southern French Alps) from the Last Glacial Maximum to the Holocene: chronological synthesis

By Etienne Cossart, Didier Bourlès, Regis BRAUCHER, Julien Carcaillet, Monique Fort and Lionel Siame

Abstract

International audienceThis paper aims to provide an overview of the investigations led in the Upper-Durance catchment (upstream Guillestre), focusing on the disappearance of glaciers after the Last Glacial Maximum. It is based on extensive fieldwork, describing and mapping the geomorphic remnants of past-glaciations, and 35 Cosmic Ray Exposure ages. A four-stage chronological sequence summarises glacial variations during the Late-Glacial/Holocene transition. The main results provide both chronological data (two generations of moraines identified as Younger Dryas and Preboreal) and spatial data (asymmetry of glaciers development in the Upper-Durance catchment during the Late-Glacial), providing new findings that may be useful for palaeo-climatologists

Topics: Last Glacial Maximum, Alps, Late-Glacial, glaciers, cosmogenic nuclides, Briançonnais, [ SDU.STU.GM ] Sciences of the Universe [physics]/Earth Sciences/Geomorphology
Publisher: Groupe français de géomorphologie (GFG)
Year: 2011
DOI identifier: 10.4000/geomorphologie.9336
OAI identifier: oai:HAL:insu-00679788v1
Provided by: Hal-Diderot
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