PhD position on "Predicting sedimentary architectures in a coastal- marine aquifer through a source-to-sink approach" (3 years)
Stratigraphy, Sedimentology and Palaeontology (SSP)
We are looking for a highly motivated, high-potential applicant to fill a:
PhD position on “Predicting sedimentary architectures in a coastal- marine aquifer through a source-to-sink approach. The Plio-Pleistocene sedimentary deposits of the Roussillon” (3 years)
This project is a source-to-sink analysis of the Plio-Pleistocene sedimentary infilling of the western domain of the Gulf of Lion (French Mediterranean margin). It integrates the quantification of eroded and deposited volumes based on the interpretation of outcrops, well data and seismic reflexion profiles. Those data will be coupled with petrographic analysis and numerical modelling. The remarkably preserved sedimentary infilling of the Roussillon mainly consists of deltaic related deposits that have prograded both onshore and offshore over the Messinian erosion surface. This sedimentary fill hosts onshore a highly solicited aquifer which architecture needs to be better constrained. This source to sink system is characterized by a drainage basin which evolution is relatively well known, a transfer zone outcropping onshore, and a well preserved and well seismically imaged sink area. This sedimentary system thus forms a particularly interesting and promising case study for a source-to-sink approach and for deciphering the respective contributions to that system of various forcings (subsidence, eustatism, climate and sedimentary supply). Moreover, numerous corings will allow the characterization of the mechanisms of production and modification of the sediments during their transfer. The sedimentary architecture of the Roussillon Plio-Pleistocene system will thus be first characterised along an onshore-offshore continuum. A process based numeric modelling will then be performed in order to test the relative importance of the different forcings and to restore the sedimentary architecture and reservoir distribution of the entire sedimentary succession.
This multidisciplinary project requires strong basis in different fields of Earth Sciences in order to integrate the different data, approaches and concepts. Good skills in basins analysis (field work, seismic and sequence stratigraphy) are required as well as good understanding of geomorphology and modelling. This project requires a comprehensive integration of different datasets and thus a strong synthesis capability and abilities to work in a research team.
This 3 years long PhD will be performed at Montpellier University and at BRGM in Orléans (France). The team also includes various French research labs. The PhD student will work in both sites, and will carry out missions in the fields and in the different labs.
Expected PhD starting date : 1st November 2021