Romey C., Rochette P., Vella C., Arfib B., Andrieu-Ponel V., Braucher R., Champollion C., Douchet M., Dussouillez P., Hermitte D., Mattioli E., Parisot Jean-Claude, Schwenninger J. L. (2014). Geophysical and geomorphological investigations of a Quaternary karstic paleolake and its underground marine connection in Cassis (Bestouan, Cassis, SE France). Geomorphology, 214, p. 402-415. ISSN 0169-555X.
Titre du document
Geophysical and geomorphological investigations of a Quaternary karstic paleolake and its underground marine connection in Cassis (Bestouan, Cassis, SE France)
Année de publication
2014
Auteurs
Romey C., Rochette P., Vella C., Arfib B., Andrieu-Ponel V., Braucher R., Champollion C., Douchet M., Dussouillez P., Hermitte D., Mattioli E., Parisot Jean-Claude, Schwenninger J. L.
Source
Geomorphology, 2014,
214, p. 402-415 ISSN 0169-555X
An original karstic system in a coastal alluvial plain located in a carbonate environment (Cassis, Provence - SE France) was studied using a multi-method approach (electrical resistivity tomography, gravimetric, passive seismic survey), combined with geomorphologic methods, surface observations and drilling. Limestone dissolution and/or cavity collapse led to the development of a polje, which was filled rapidly by erosion of Aptian marls. The combination of several dating and paleoenvironmental proxies indicates that the polje was filled during a glacial period (MIS 6, 8 or 10, i.e. in the 130-360 ka age range). This discovery has implications for the understanding of karst processes. The connection between the polje and the three km-long Bestouan underwater karstic conduit with submarine outlet is strongly suggested by sedimentological studies and geophysical prospections.
Plan de classement
Géologie et formations superficielles [064]
Description Géographique
FRANCE
Localisation
Fonds IRD [F B010062042]
Identifiant IRD
fdi:010062042
