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2013 Vol. 46, No. 3
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NI Kang, LEI Yong-xiao, HU Xiu-jun, CHEN Wen-ge. Zircon U-Pb Age and Its Implications of the Kekesentao Ophiolite in the south of the Erqis Suture Zone in Xinjiang[J]. Northwestern Geology, 2013, 46(3): 64-69.
Citation: NI Kang, LEI Yong-xiao, HU Xiu-jun, CHEN Wen-ge. Zircon U-Pb Age and Its Implications of the Kekesentao Ophiolite in the south of the Erqis Suture Zone in Xinjiang[J]. Northwestern Geology, 2013, 46(3): 64-69.
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Zircon U-Pb Age and Its Implications of the Kekesentao Ophiolite in the south of the Erqis Suture Zone in Xinjiang

  • 1.

    Minxi Geology Team of the Fujian Bureau of Geology and Mineral Resources, Xiamen 361000, China

  • 2.

    Xi'an Institute of Geology and Mineral Resources, Xi'an 710054, China

  • 3.

    No.3 Geology Team of the Xinjiang Bureau of Geology and Mineral Resources, Kerle 841000, China

Received Date:  16 October 2012
Revised Date:  14 June 2013
Publish Date:  15 September 2013
    Abstract
  • The Kekesentao ophiolite outcrops in the south of the Erqis suture zone and tectonically mixed in the MidAltai;Kekesentao ophiolite;age;tectonic implicationsDevonian Yundoukala Formation. Main rocks of the ophiolite include serpentinized dunite, olivineAltai;Kekesentao ophiolite;age;tectonic implicationsgabbro and gabbro. In this study, we obtained zircon LAAltai;Kekesentao ophiolite;age;tectonic implicationsICPMS UAltai;Kekesentao ophiolite;age;tectonic implicationsPb age of the gabbros from this ophiolite. Zircons from western and eastern pluton yield concordant age of 332.1±1.5 Ma and 336.5±1.3 Ma respectively, indicating that both of them were coevally emplaced and the ophiolite was formed in early Carboniferous. Combining with the ages obtained in this study and the regional geology, we suggest that the Kekesentao ophiolite was the residue of the oceanic crust between the Kazakstan plate and the AltaiAltai;Kekesentao ophiolite;age;tectonic implicationsMongolia Terrane during their amalgamation at middle to late Carboniferous.
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