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<title lang=en>Spatial distribution of denudation in Eastern Tibet and regressive erosion of plateau margins</title>
<creator>Godard, Vincent</creator>
<creator>Lavé, J.</creator>
<creator>Carcaillet, J.</creator>
<creator>Cattin, R.</creator>
<creator>Bourlès, D.</creator>
<creator>Zhu, J.</creator>
<contributor>Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD) - Aix Marseille Université (AMU) - Collège de France (CdF) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Laboratoire de géologie de l'ENS (LGE) ; École normale supérieure - Paris (ENS Paris) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre de Recherches Pétrographiques et Géochimiques (CRPG) ; Université de Lorraine (UL) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut des Sciences de la Terre (ISTerre) ; Université Joseph Fourier - Grenoble 1 (UJF) - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR) - Institut national des sciences de l'Univers (INSU - CNRS) - Institut de recherche pour le développement [IRD] : UR219 - PRES Université de Grenoble - Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Chengdu University of Technology</contributor>
<description>International audience</description>
<source>ISSN: 0040-1951</source>
<source>EISSN: 1879-3266</source>
<source>Tectonophysics</source>
<publisher>Elsevier</publisher>
<identifier>hal-01564192</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01564192</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01564192</source>
<source>Tectonophysics, Elsevier, 2010, 491 (1-4), pp.253 - 274. 〈10.1016/j.tecto.2009.10.026〉</source>
<identifier>DOI : 10.1016/j.tecto.2009.10.026</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2009.10.026</relation>
<language>en</language>
<subject lang=en>Wenchuan earthquake</subject>
<subject lang=en>Denudation processes</subject>
<subject lang=en>Topographic margin evolution</subject>
<subject lang=en>Eastern Tibetan Plateau</subject>
<subject lang=en>Cenozoic</subject>
<subject>[SDU.STU.GM] Sciences of the Universe [physics]/Earth Sciences/Geomorphology</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The Longmen Shan range is one of the major topographic and structural features of the easternmargin of the Tibetan Plateau. With an impressive topographic gradient and low convergence rates across the range this region has raised important questions concerning the dynamics of plateaumargin settings, such as the long-term mechanisms of topographic evolution. The investigation of the distribution in space and time of denudation can provide critical insight into such dynamics and shed light on still unresolved controversies. For that purpose, we present a new dataset that documents the intensity and distribution of denudation processes across this plateaumargin through field survey of fluvial incision markers, quantitative geomorphology and cosmogenic nuclide derived basin-wide erosion rates. Erosion is < 0.5 mm/year in the frontal region of the Longmen Shan and between 0.5 and 1 mm/year further west, with a gradual decrease when reaching the northern headwaters of the Min Jiang watershed, adjacent to the beginning of the Tibetan Plateau. The spatialdistribution of denudation inferred from the various methods we use suggests that most of the differential uplift in the Central Longmen Shan is accommodated by the Beichuan Fault and frontal structures located in the foothills. The denudation pattern seems also to reflect the large-scale propagation of erosion from the Sichuan Basin toward the Plateau. This suggests that the Longmen Shan range is submitted to the combined influences of slow thrusting activity on the frontal structures and progressive westward regressiveerosion as a probable response to a pulse of uplift of the Tibetan PlateauEasternmargin, that started 10 Ma ago.</description>
<date>2010</date>
<contributor>ANR-06-JCJC-0128, ContinentDyn, Importance and coupling of processes responsible for the patterns of continental dynamics and geomorphic evolution(2006)</contributor>
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