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<identifier>oai:HAL:hal-00411133v1</identifier>
<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Interactions between tectonics and surface processes in Taiwan : insights from sandbox experiments</title>
<creator>Lu, C.Y.</creator>
<creator>Malavieille, Jacques</creator>
<creator>Chang, Kuo Jeng</creator>
<creator>Chan, Y.</creator>
<creator>Konstantinovskaya, E.</creator>
<contributor>Department of Geosciences ; Université du Québec</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>Institute of Earth Sciences [Tapei] (IES Sinica) ; Academia Sinica</contributor>
<source>Bolletino di Geofisica teorica ed applicata</source>
<identifier>hal-00411133</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00411133</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00411133</source>
<source>Bolletino di Geofisica teorica ed applicata, 2008, 49, 2 suppl. GeoMod 2008 Third International Geomo, pp.466-470</source>
<language>en</language>
<subject lang=da>GeoMod</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>In Taiwan , the subduction of the Chinese continental margin under the Luzon arc results in the progressive growth of an active orogenic wedge. It is one of the best places to study the complex relationships that occurs between the tectonic processes controlling deformation (plate rheology and kinematics, metamorphism and magmatism) and surface processes (erosion and sedimentation). In order to study the kinematics of the present day convergence of Philippine Sea plate to the Asian continent around Taiwan, we perform 2D and 3D sandbox modeling and we analyzed the models with PIV (Particle Image Velocimetry) software. In 2D experiments, a model Coulomb wedge is submitted to erosion and sedimentation under topography and flux steady state conditions. The 3D experiments are mainly used to study the escape tectonics occurring in the middle west and southwest Taiwan. A wedge shaped indenter and a basement relief were used to simulate the mechanical plate boundary between Philippine Sea plate and Eurasia plate and the basement topography to the west of Taiwan respectively. We examine the exhumation patterns, the mode of fault propagation and displacement patterns by strain partitioning of vertical vs. horizontal displacement and convergent parallel vs. orogen parallel components. The preliminary conclusions are: 1. The interactions between tectonics, erosion and sedimentation control geometry and kinematics of the doubly vergent transpressional orogen. 2. Exhumation processes are controlled by the balance between erosion, frontal accretion and underplating in different structural domains of the wedge. 3. Retrowedge erosion favorites backfolding and backthrusting, induces flower structures and fan shaped cleavage distribution. 4. Sedimentation promotes underplating and out-of sequences thrusting. 5. Continental subduction or subduction of topographic highs will enhance underthrusting/underplating, thick-skin tectonics and inversion of sedimentary basin.</description>
<date>2008</date>
</dc>
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