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<title lang=en>Strain weakening enables continental plate tectonics</title>
<creator>Gueydan, Frédéric</creator>
<creator>Précigout, Jacques</creator>
<creator>Montesi, Laurent G.J.</creator>
<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>Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) ; Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) - Institut national des sciences de l'Univers (INSU - CNRS) - Université d'Orléans (UO) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Department of Geology</contributor>
<contributor>grant NASA PGG NNX10AG41G.</contributor>
<description>International audience</description>
<source>ISSN: 0040-1951</source>
<source>EISSN: 1879-3266</source>
<source>Tectonophysics</source>
<publisher>Elsevier</publisher>
<identifier>insu-00949213</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00949213</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00949213/document</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-00949213/file/Gueydan_et_al_2014.pdf</identifier>
<source>https://hal-insu.archives-ouvertes.fr/insu-00949213</source>
<source>Tectonophysics, Elsevier, 2014, 631, pp.189-196. 〈10.1016/j.tecto.2014.02.005〉</source>
<identifier>DOI : 10.1016/j.tecto.2014.02.005</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2014.02.005</relation>
<language>en</language>
<subject lang=en>lithosphere strength</subject>
<subject lang=en>strain localization</subject>
<subject lang=en>weakening</subject>
<subject lang=en>plate boundaries</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>Much debate exists concerning the strength distribution of the continental lithosphere, how it controls lithosphere-scale strain localization and hence enables plate tectonics. No rheological model proposed to date is comprehensive enough to describe both the weakness of plate boundary and rigid-like behaviour of plate interiors. Here we show that the duality of strength of the lithosphere corresponds to different stages of microstructural evolution. Geological constraints on lithospheric strength and large strain numerical experiments reveal that the development of layers containing weak minerals and the onset of grain boundary sliding upon grain size reduction in olivine cause strain localisation and reduce strength in the crust and subcontinental mantle, respectively. The positive feedback between weakening and strain localization leads to the progressive development of weak plate boundaries while plate interiors remain</description>
<date>2014</date>
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