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<title lang=en>Upper mantle anisotropy of southeast Arabia passive margin [Gulf of Aden northern conjugate margin], Oman</title>
<creator>Al-Lazki, Ali</creator>
<creator>Ebinger, Cynthia</creator>
<creator>Kendall, Michael</creator>
<creator>Helffrich, George</creator>
<creator>Leroy, Sylvie</creator>
<creator>Tiberi, Christel</creator>
<creator>Stuart, Graham</creator>
<creator>Al-Toobi, Khalfan</creator>
<contributor>Department of Earth Sciences, College of Sciences ; Sultan Qaboos University</contributor>
<contributor>Department of Earth and Environmental Sciences ; University of Rochester [USA]</contributor>
<contributor>School of Earth Sciences [Bristol] ; University of Bristol [Bristol]</contributor>
<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>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>School of Earth and Environment [Leeds] (SEE) ; University of Leeds</contributor>
<contributor>Earthquake Monitoring Center ; Sultan Qaboos University</contributor>
<description>International audience</description>
<source>ISSN: 1866-7411</source>
<source>Arabian Journal of Geosciences</source>
<publisher>Springer</publisher>
<identifier>hal-00647478</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00647478</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00647478</source>
<source>Arabian Journal of Geosciences, Springer, 2012, 5 (5), pp.925-934. 〈10.1007/s12517-011-0477-2〉</source>
<identifier>DOI : 10.1007/s12517-011-0477-2</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s12517-011-0477-2</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>In this study, we used data recorded by two consecutive passive broadband deployments on the Gulf of Aden northern margin, Dhofar region, Sultanate of Oman. The objective of these deployments is to map the young eastern Gulf of Aden passive continental margin crust and upper mantle structure and rheology. In this study, we use shear-wave splitting analysis to map lateral variations of upper mantle anisotropy beneath the study area. In this study, we found splitting magnitudes to vary between 0.33 and 1.0 s delay times, averaging about 0.6 s for a total of 17 stations from both deployment periods. Results show distinct abrupt lateral anisotropy variation along the study area. Three anisotropy zones are identified: a western zone dominated by NW-SE anisotropy orientations, an eastern zone dominat- ed with NE-SW anisotropy orientations, and central zone with mixed anisotropy orientations similar to the east and west zones. We interpret these shorter wavelength anisotropy zones to possibly represent fossil lithospheric mantle anisotropy. We postulate that the central anisotropy zone may be representing a Proterozoic suture zone that separates two terranes to the east and west of it. The anisotropy zones west and east were being used indicative of different terranes with different upper mantle anisotropy signatures.</description>
<date>2012</date>
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