Croissance et dénudation des Pyrénées du Crétacé supérieur au Paléogène : apports de l'analyse de bassin et thermochronométrie détritique
type: Dataset
description: Orogenic area result directly from the interplay between surface and deep processes. Our ability in discriminating the various forcing parameters controlling the growth of mountain ranges is thus highly dependent on our knowledge of deformation, exhumation and sedimentation timings, combined with precise constraints on the orogen geometry that permit us to quantify accretion and erosion flux. In this regard, the Pyrenees are a very interesting study area. The Pyrenees are an intraplate collision range of the Alpine-Himalayan system. They are built by the shortening of continental thinned margins during the convergence between Iberia and Eurasia lasting from Late Cretaceous to Early Miocene. The Pyrenees consist in a doubly vergent asymmetric orogenic wedge. From Priabonian to Miocene times, the Ebro foreland basin underwent endorheic conditions due to the closure of all oceanic connexions by the the continuing convergence between Iberia and Eurasia. The result is the exceptional preservation of synorogenic strata. Because of the duration of orogenic growth and its sedimentary evolution that both happen during the Cenozoic climatic cooling, the Pyrenees are the perfect target to investigate coupling and retroactions between climate and tectonics. The first part of this work is focused on the infilling of peripheral basins based on well-log data. We discuss ante-convergence evolution, structural inheritance and synorogenic infill. We first calculate subsidence from Late Triassic to Miocene and then we derive sedimentary fluxes from isopach maps. The sedimentary flux increases at the beginning of the collision (Late Cretaceous) and can be correlated to the convergence rates between Iberia and Eurasia. After the Middle Eocene, sedimentary flux increases rapidly that cause the complete filling of the basin whereas subsidence has stopped migrating, convergence is slowing and the orogenic wedge is not widening. A detailed biostratigraphic and sedimentologic analysis of Lut…
landing page: https://theses.hal.science/tel-00642171
keyword: cretace-superieur
keyword: infoeu-reposemanticsdoctoralthesis
keyword: paleogene
keyword: sdustusciences-of-the-universe-physicsearth-sciences
keyword: theses
issued: 2026-05-24T23:40:54.357712
modified: 2026-05-24T23:40:54.357718
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Croissance et dénudation des Pyrénées du Crétacé supérieur au Paléogène : apports de l'analyse de bassin et thermochronométrie détritique
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00642171
issued: 2026-05-24T23:40:54.407888
modified: 2026-05-24T23:40:54.340472