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Evolution post-rift et enregistrement des mouvements verticaux le long des marges passives : Effets des processus intrinsèques aux marges passives

Abstract : Passive margins are intra-plate lithospheric structures located at the transition between continental and oceanic crust. Because of their location on the border of continents, passive margins record sediment transfer, produced by erosion of continental relief far from the margins, and complex and low intensity deformations produced by intrinsic processes (eg, flexural isostasy, thermal subsidence), intra-plate deformations, and plate boundary deformation. The sedimentary accumulation in basins and the continental denudation result in local, regional, and global processes with complex coupling. Up to the present, published studies on passive margins have generally been segmented between, unstretched and transitional domains and stretched domain of passive margin. To improve our understanding of post-rift deformation and recording of passive margin, we have done a new study incorporating the margin since unstretched domain to stretched domain. We used in this study, a new 3D numerical model coupling thermal processes, the flexural isostasy and surface processes.
Keywords : Tectonics
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François Deschamps. Evolution post-rift et enregistrement des mouvements verticaux le long des marges passives : Effets des processus intrinsèques aux marges passives. Sciences de la Terre. Universite Rennes 1, 2010. Français. ⟨tel-01137274⟩

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