A5085742473- Geology and Paleoclimatology Research
- Geological formations and processes
- Geological and Geophysical Studies Worldwide
- Landslides and related hazards
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Marine and environmental studies
- Hydraulic Fracturing and Reservoir Analysis
- Marine and coastal ecosystems
- Paleontology and Stratigraphy of Fossils
- Maritime and Coastal Archaeology
- Pleistocene-Era Hominins and Archaeology
Geo-Ocean
2019-2022
Université de Bretagne Occidentale
2019-2022
Institut Universitaire Européen de la Mer
2019-2022
Centre National de la Recherche Scientifique
2019-2022
Ifremer
2019-2020
Université de Bretagne Sud
2020
Abstract The formation of the Antarctic Circumpolar Current (ACC) is critical for evolution global climate, but timing its onset not well constrained. Here, we present new seismic evidence widespread Late Eocene to Oligocene marine diagenetic chert in sedimentary drift deposits east New Zealand indicating prolonged periods blooms siliceous microorganisms starting ~36 million years ago (Ma). These major reflect initiation arrival and upwelling northern-sourced, nutrient-rich deep equatorial...
The Gulf of Lions (NW Mediterranean Sea) is a SW-NE oriented passive continental margin formed since the Oligocene. It presents small to large scale mass movement features suggesting long history seafloor instability. Of particular interest are two surficial mass-transport deposits along Rhone turbiditic levee, known as Eastern and Western Mass-Transport Deposits (REMTD RWMTD). With help recently acquired multi-beam bathymetric, sub-bottom profiler, high-resolution seismic sedimentological...
Abstract The Gulf of Lions presents recurring mass-transport deposits (MTDs) within the Plio-Quaternary sediments, suggesting a long history mass movements. two large, surficial MTDs are located on eastern and western levee Rhone canyon over an area exceeding 6000 km 2 volumes 100 3 . Both were emplaced 21 ka ago (peak Last Glacial Maximum), common trigger. Here, we present multidisciplinary high-resolution geophysical, sedimentological in-situ geotechnical study source deposit areas both to...
Abstract Megabeds are thick sedimentary layers extending over thousands of square kilometres in deep-sea basins and thought to result from large slope failures triggered by major external events. Such deposits have been found at least three areas the Mediterranean Sea. Although their discovery dates back early 1980s, many questions remain concerning initiation, source area, extent nature emplacement. One largest previously documented megabeds was emplaced during Last Glacial Maximum across...
<p><span>The Gulf of Lions (GoL) is a passive margin about 200 km long and 70 wide with main sediment supply from the Rhone River supplying Alpine sediments to delta. Submarine landslides in GoL are widespread upper slope deep basin, within canyon flanks interfluves major canyons. The two submarine present Eastern Rhône Interfluve Slide (ERIS) an unnamed slide complex on western side Petit Canyon. Their resulting mass transport deposits (MTDs), MTD...
The Gulf of Lions presents recurring mass-transport deposits (MTDs) within the Plio-Quaternary sediments suggesting a long history mass-movements. two large, surficial MTDs are located on eastern and western levee Rhone canyon over an area exceeding 6000 km2 volumes 100 km3. Both were emplaced 21 ka ago (peak Last Glacial Maximum), common trigger. Here, we present multidisciplinary high-resolution geophysical, sedimentological in-situ geotechnical study source deposit areas both to...