1. Source-to-Sink analysis of the Plio-Pleistocene deposits in the Suez rift (Egypt)
- Author
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Delphine Rouby, Sébastien Rohais, IFP Energies nouvelles (IFPEN), Géosciences Environnement Toulouse (GET), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), Sami Khomsi, François M. Roure, Mansour Al Garni, Ammar Amin, Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
- Subjects
geography ,geography.geographical_feature_category ,Rift ,010504 meteorology & atmospheric sciences ,Pleistocene ,Pliocene ,Outcrop ,Drainage basin ,Sediment ,Plio-Pleistocene ,010502 geochemistry & geophysics ,Suez rift ,01 natural sciences ,source-to-sink ,Paleontology ,Tectonics ,sediment supply ,Stage (stratigraphy) ,[SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy ,catchment ,syn-rift ,post-rift ,Geology ,0105 earth and related environmental sciences - Abstract
International audience; We present a source-to-sink (S2S) study of the Plio-Pleistocene deposits in the Suez rift (Egypt). We used stratigraphic record and quantitative geomorphology to constrain relief evolution in a rift setting from a high-resolution database at basin-scale (~300 km x 100 km) including, digital elevation model, outcrop and subsurface data. The stratigraphic architecture shows five main stages ranging from rift initiation to tectonic quiescence (Oligo-Miocene) plus a post-rift stage (Plio-Pleistocene). We quantified sediment accumulation history and analysed the relationship between catchment and sediment supply for the Plio-Pleistocene (post-rift stage). The results of the source-to-sink study for the post-rift stage were then compared to previous estimations for the main rifting stages. We show that the sediment supply dynamics of the Plio-Pleistocene deposits of the Suez rift records a renewed uplift ca. 5 Myr ago. However, we also show that a major climate shift related to the Pliocene revolution was most probably coeval to reach the magnitude of accumulation observed.
- Published
- 2020