Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/116346
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dc.contributor.authorMa, X.-
dc.contributor.authorXu, Z.-
dc.contributor.authorMeert, J.-
dc.contributor.authorSantosh, M.-
dc.date.issued2017-
dc.identifier.citationIsland Arc, 2017; 26(5):e12202-1-e12202-14-
dc.identifier.issn1038-4871-
dc.identifier.issn1440-1738-
dc.identifier.urihttp://hdl.handle.net/2440/116346-
dc.description.abstractThe Gangdese magmatic belt is located in the southern margin of the Lhasa terrane, south Tibet. Here zircon U–Pb ages and Hf isotopic data, as well as whole‐rock geochemistry and Sr–Nd isotopes on andesites from the Bima Formation with a view to evaluating the history of the Gangdese magmatism and the evolution of the Neotethys Ocean. Zircon U–Pb dating yields an age of ca 170 Ma from six samples, representing the eruptive time of these volcanic rocks. Zircon Hf isotopes show highly positive εHf(t) values of +13 to +16 with a mean of +15.2. Whole‐rock geochemical and Sr–Nd isotopic results suggest that the magma source of these andesites was controlled by partial melting of a depleted mantle source with addition of continental‐derived sediments, similar to those in the southern arcs of the Lesser Antilles arc belt. In combination with published data, the volcanic rocks of the Bima Formation are proposed to have been generated in an intra‐oceanic arc system, closely associated with northward subduction of the Neotethyan oceanic lithosphere.-
dc.description.statementofresponsibilityXuxuan Ma, Zhiqin Xu, Joseph Meert, M. Santosh-
dc.language.isoen-
dc.publisherWiley-
dc.rights© 2017 John Wiley & Sons Australia, Ltd.-
dc.source.urihttp://dx.doi.org/10.1111/iar.12202-
dc.subjectAndesite; Gangdese; magma evolution; Neotethys; Tibet; zircon geochronology-
dc.titleEarly Jurassic intra-oceanic arc system of the Neotethys Ocean: constraints from andesites in the Gangdese magmatic belt, south Tibet-
dc.typeJournal article-
dc.identifier.doi10.1111/iar.12202-
pubs.publication-statusPublished-
dc.identifier.orcidSantosh, M. [0000-0002-1073-8477]-
Appears in Collections:Aurora harvest 8
Geology & Geophysics publications

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