The large-scale ductile shear zone in Kuda, western Kunlun |
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Authors: | Hui Zhou Jiliang Li Quanlin Hou Wenjiao Xiao Haihong Chen |
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Institution: | (1) Department of Geology, Peking University, 100871 Beijing, China;(2) Institute of Geology, Chinese Academy of Sciences, 100029 Beijing, China |
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Abstract: | A set of metamorphic suites, previously known as the Precambrian metamorphic basement in Kuda, western Kunlun has been determined
as a large nappe ductile shear zone which develops penetrative foliation, oriented stretching lineation, various but consistent
kinematic indicators of thrusting from north to south. The microstructure and the supermicrostructure also display the ductile
deformation characteristics, and the paleotectonic differential stress is obtained. The metamorphic age is 426–451 Ma dated
by40Ar/39Ar method. According to tectonic background, it is a product of early Paleozoic accretionary wedge orogenesis in western Kunlun. |
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Keywords: | ductile shear zone early Paleozoic western Kunlun |
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