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dc.contributor.authorTang, Zheng
dc.contributor.authorJulià, Jordi
dc.contributor.authorZahran, Hani
dc.contributor.authorMai, Paul Martin
dc.date.accessioned2016-05-12T07:08:36Z
dc.date.available2016-05-12T07:08:36Z
dc.date.issued2016-05-11
dc.identifier.citationThe lithospheric shear-wave velocity structure of Saudi Arabia: Young volcanism in an old shield 2016 Tectonophysics
dc.identifier.issn00401951
dc.identifier.doi10.1016/j.tecto.2016.05.004
dc.identifier.urihttp://hdl.handle.net/10754/609150
dc.description.abstractWe investigate the lithospheric shear-wave velocity structure of Saudi Arabia by conducting H-κ stacking analysis and jointly inverting teleseismic P-receiver functions and fundamental-mode Rayleigh wave group velocities at 56 broadband stations deployed by the Saudi Geological Survey (SGS). The study region, the Arabian plate, is traditionally divided into the western Arabian shield and the eastern Arabian platform: The Arabian shield itself is a complicated mélange of crustal material, composed of several Proterozoic terrains separated by ophiolite-bearing suture zones and dotted by outcropping Cenozoic volcanic rocks (locally known as harrats). The Arabian platform is primarily covered by 8 to 10 km of Paleozoic, Mesozoic and Cenozoic sedimentary rocks. Our results reveal high Vp/Vs ratios in the region of Harrat Lunayyir, which are interpreted as solidified magma intrusions from old magmatic episodes in the shield. Our results also indicate slow velocities and large upper mantle lid temperatures below the southern and northern tips of the Arabian shield, when compared with the values obtained for the central shield. We argue that our inferred patterns of lid velocity and temperature are due to heating by thermal conduction from the Afar plume (and, possibly, the Jordan plume), and that volcanism in western Arabia may result from small-scale adiabatic ascent of magma diapirs.
dc.description.sponsorshipWe are grateful to Mahmoud Salam, Wael Raddidi and the team at Saudi Geological Survey (SGS) for providing the broadband seismic data. We also thank Sung-Joon Chang and an anonymous reviewer for their constructive comments, which helped greatly in improving the manuscript. The research presented in the paper is supported by the cooperation between Saudi Geological Survey (SGS) and King Abdullah University of Science and Technology (KAUST).
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0040195116301172
dc.rights© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectReceiver function
dc.subjectJoint inversion
dc.subjectBulk Vp/Vs ratio
dc.subjectShear-wave velocities
dc.subjectContinental crust
dc.subjectSaudi Arabia
dc.titleThe lithospheric shear-wave velocity structure of Saudi Arabia: Young volcanism in an old shield
dc.typeArticle
dc.contributor.departmentComputational Earthquake Seismology (CES) Research Group
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalTectonophysics
dc.eprint.versionPost-print
dc.contributor.institutionDepartamento de Geofisica, Universidade Federal do Rio Grando do Norte (UFRN), Natal, Brazil
dc.contributor.institutionNational Center for Earthquakes and Volcanoes, Saudi Geological Survey (SGS), Jeddah, Saudi Arabia
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personTang, Zheng
kaust.personMai, Paul Martin
refterms.dateFOA2018-06-13T17:16:28Z
dc.date.published-online2016-05-11
dc.date.published-print2016-06


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