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<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Crustal and upper mantle structure beneath south-western margin of the Arabian Peninsula from teleseismic tomography</title>
<creator>Korostelev, Félicie</creator>
<creator>Basuyau, Clémence</creator>
<creator>Leroy, Sylvie</creator>
<creator>Tiberi, Christel</creator>
<creator>Ahmed, Abdulhakim</creator>
<creator>Stuart, Graham</creator>
<creator>Keir, Derek</creator>
<creator>Rolandone, Frédérique</creator>
<creator>Al Ganad, Ismail</creator>
<creator>Khanbari, Khaled</creator>
<creator>Boschi, Lapo</creator>
<contributor>Institut des Sciences de la Terre de Paris (iSTeP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut de Physique du Globe de Paris (IPGP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Institut national des sciences de l'Univers (INSU - CNRS) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Université de la Réunion (UR) - 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>
<contributor>Seismological and Volcanological Observatory Center ; SVOC</contributor>
<contributor>School of Earth and Environment [Leeds] (SEE) ; University of Leeds</contributor>
<contributor>National Ocenalography Centre Southampton ; University of Southampton [Southampton]</contributor>
<contributor>Yemen Geological Survey & Mineral Ressources Board ; GSMRB</contributor>
<contributor>Yemen Remote Sensing and GIS Center ; Sana'a University</contributor>
<description>International audience</description>
<source>ISSN: 1525-2027</source>
<source>EISSN: 1525-2027</source>
<source>Geochemistry, Geophysics, Geosystems</source>
<publisher>AGU and the Geochemical Society</publisher>
<identifier>hal-01015496</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01015496</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01015496/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01015496/file/Korostelev_etal_GGG_2014.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01015496</source>
<source>Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2014, pp.1-40. 〈10.1002/2014GC005316〉</source>
<identifier>DOI : 10.1002/2014GC005316</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/2014GC005316</relation>
<language>en</language>
<subject>[SDU.STU] Sciences of the Universe [physics]/Earth Sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>We image the lithospheric and upper asthenospheric structure of western continental Yemen with 24 broadband stations to evaluate the role of the Afar plume on the evolution of the continental margin and its extent eastwards along the Gulf of Aden. We use teleseismic tomography to compute relative P-wave velocity variations in southwestern Yemen down to 300 km depth. Published receiver function analysis suggest a dramatic and localized thinning of the crust in the vicinity of the Red Sea and the Gulf of Aden, consistent with the velocity structure that we retrieve in our model. The mantle part of the model is dominated by the presence of a low velocity anomaly in which we infer partial melting just below thick Oligocene flood basalts and recent off-axis volcanic events (from 15 Ma to present). This low velocity anomaly could correspond to an abnormally hot mantle and could be responsible for dynamic topography and recent magmatism in western Yemen. Our new P-wave velocity model beneath western Yemen suggests the young rift flank volcanoes beneath margins and on the flanks of the Red Sea rift are caused by focused small-scale diapiric upwelling from a broad region of hot mantle beneath the area. Our work shows that relatively hot mantle, along with partial melting of the mantle, can persist beneath rifted margins after breakup has occurred.</description>
<date>2014</date>
</dc>
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