Quaternary sea-level change and sedimentation on the continental shelf and slope of Antibes,French Riviera |
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Authors: | B Savoye D J W Piper |
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Institution: | (1) Département de Géosciences marines, IFREMER (Institut Français de Recherches pour l'Exploitation de la Mer), B.P. 70, 29280 Plouzané, France;(2) Geological Survey of Canada, Bedford Institute of Oceanography, Atlantic Geoscience Centre, P.O. Box 1006, B2Y 4A2 Dartmouth, N.S., Canada |
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Abstract: | Thin Quaternary sediments overlie Neogene bedrock on the shelf off Antibes, southeastern France. Sparker seismic profiles show shelf break progradation at 110 m water depth, immediately below the most recent postglacial transgression. An older progradational event at the same depth correlates with the top of an acoustically, well-stratified sequence on the slope dated at 29.6 ka. Cores show the post-glacial transgressive surface overlain by shelly sands (dated at 12.7 ka at 85m) and several meters of mud. At the present, the seabed consists of an ephemeral cover of fine sand. The data set on sea-level rise complements data recently obtained on land on the Holocene transgression. |
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