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Dynamique de l'érosion dans les chaînes de montagnes : Influence de la sédimentation de piedmont. L'exemple des Pyrénées

Abstract : Most studies concerning erosion dynamics in mountain chains do not take into account the influence of piedmont sedimentation. Foreland basins are yet filled in with marine to continental sequences, inducing the base-level rise of streams that drain the mountain chains. This work intends to show how much the piedmont sedimentation disturbs relief dynamics. It is based on the analysis of the morphological evolution of the Pyrenees, whose early stages are preserved by thick detrital deposits on the Pyrenean southern side and which is characterized by applanation during the Miocene. Current remnants of the resulting peneplain reach near 3000 m at their highest point. The suggested evolution is compared with the results of an experimental approach concerning the influence of the piedmont sedimentation on dynamics of an uprising relief.
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https://tel.archives-ouvertes.fr/tel-00007292
Contributor : Alain-Hervé Le Gall <>
Submitted on : Thursday, November 4, 2004 - 11:12:15 AM
Last modification on : Thursday, January 14, 2021 - 11:41:33 AM
Long-term archiving on: : Friday, April 2, 2010 - 8:37:02 PM

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Julien Babault. Dynamique de l'érosion dans les chaînes de montagnes : Influence de la sédimentation de piedmont. L'exemple des Pyrénées. Géomorphologie. Université Rennes 1, 2004. Français. ⟨tel-00007292⟩

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