untitled
<OAI-PMH schemaLocation=http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd>
<responseDate>2018-01-17T12:08:35Z</responseDate>
<request identifier=oai:HAL:hal-01277178v1 verb=GetRecord metadataPrefix=oai_dc>http://api.archives-ouvertes.fr/oai/hal/</request>
<GetRecord>
<record>
<header>
<identifier>oai:HAL:hal-01277178v1</identifier>
<datestamp>2018-01-11</datestamp>
<setSpec>type:ART</setSpec>
<setSpec>subject:sdu</setSpec>
<setSpec>subject:sde</setSpec>
<setSpec>collection:INSU</setSpec>
<setSpec>collection:CNRS</setSpec>
<setSpec>collection:UNIV-AG</setSpec>
<setSpec>collection:ENSC-LILLE</setSpec>
<setSpec>collection:INRA</setSpec>
<setSpec>collection:SDE</setSpec>
<setSpec>collection:GM</setSpec>
<setSpec>openaire</setSpec>
<setSpec>collection:AGROPOLIS</setSpec>
<setSpec>collection:GIP-BE</setSpec>
<setSpec>collection:AGREENIUM</setSpec>
<setSpec>collection:INC-CNRS</setSpec>
<setSpec>collection:B3ESTE</setSpec>
<setSpec>collection:UNIV-MONTPELLIER</setSpec>
</header>
<metadata><dc>
<publisher>HAL CCSD</publisher>
<title lang=en>Low steady-state stresses in the cold lithospheric mantle inferred from dislocation dynamics models of dislocation creep in olivine</title>
<creator>Boioli, Francesca</creator>
<creator>Tommasi, Andrea</creator>
<creator>Cordier, Patrick</creator>
<creator>Demouchy, Sylvie</creator>
<creator>Mussi, Alexandre</creator>
<contributor>Unité Matériaux et Transformations - UMR 8207 (UMET) ; Institut National de la Recherche Agronomique (INRA) - Université de Lille, Sciences et Technologies - Ecole Nationale Supérieure de Chimie de Lille (ENSCL) - 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>Manteau et Interfaces ; 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) - 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>
<description>International audience</description>
<source>ISSN: 0012-821X</source>
<source>Earth and Planetary Science Letters</source>
<publisher>Elsevier</publisher>
<identifier>hal-01277178</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01277178</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01277178/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01277178/file/Boioli.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01277178</source>
<source>Earth and Planetary Science Letters, Elsevier, 2015, 432, pp.232-242. 〈10.1016/j.epsl.2015.10.012〉</source>
<identifier>DOI : 10.1016/j.epsl.2015.10.012</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2015.10.012</relation>
<language>en</language>
<subject lang=en>olivine rheology</subject>
<subject lang=en>creep</subject>
<subject lang=en>deformation</subject>
<subject lang=en>lithospheric mantle</subject>
<subject lang=en>numerical modelling</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>Transmission electron microscopy observations on olivine crystals deformed at moderate (≤1273 K) temperature evidenced dislocations interactions explaining the hardening observed in the experiments, but also recovery mechanisms by the absorption or emission of point defects. Thus we investigate the possibility that, at geological strain-rates, these recovery processes allow steady-state deformation by dislocation creep at low to moderate temperatures in the lithospheric mantle. We test this hypothesis using a 2.5-D dislocation dynamics (DD) model, which combines dislocation glide and recovery by climb. This model shows that diffusion-controlled recovery processes allow for steady-state deformation by dislocation creep in the lithospheric mantle at stresses <500 MPa. For stresses of 50–200 MPa, steady-state strain-rates of 10−15 s−110−15 s−1 may be attained at temperatures as low as 900 K. Fitting of the DD model produces a flow law, which represents a lower bound for the lithospheric mantle strength, since the models describe the deformation of an olivine single crystal in an easy slip orientation. Comparison of strain-rates and Moho temperatures inferred for different geodynamic environments and the predictions of this model-based flow law implies, nevertheless, that, except in incipient rifts, most of the observed deformation may be produced by stress levels ≤200 MPa, consistent with those inferred to be produced by convection. This convergence suggests that the present models, which explicitly calculate the time-dependent dislocation dynamics, may provide a correct first order estimate of the mechanical behaviour of the lithospheric mantle, which cannot be derived directly from any existing data.</description>
<date>2015-12-15</date>
<contributor>European Project : 230748, EC:FP7:PEOPLE, FP7-PEOPLE-IRG-2008, POEM(2008)</contributor>
<relation>info:eu-repo/grantAgreement/EC/FP7/230748/EU/Plasticity of Earth's mantle/POEM</relation>
<contributor>European Project : 290424, EC:FP7:ERC, ERC-2011-ADG_20110209, RHEOMAN(2012)</contributor>
<relation>info:eu-repo/grantAgreement/EC/FP7/290424/EU/MULTISCALE MODELLING OF THE RHEOLOGY OF MANTLE MINERALS/RHEOMAN</relation>
</dc>
</metadata>
</record>
</GetRecord>
</OAI-PMH>
