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2000: Characteristics and U-Pb ages of zircon in metavolcanics from the Kangbutiebao Formation in the Altay orogen, Xinjiang. Geological Bulletin of China, 19(3): 281-287.
Citation: 2000: Characteristics and U-Pb ages of zircon in metavolcanics from the Kangbutiebao Formation in the Altay orogen, Xinjiang. Geological Bulletin of China, 19(3): 281-287.
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Characteristics and U-Pb ages of zircon in metavolcanics from the Kangbutiebao Formation in the Altay orogen, Xinjiang

  • Beijing Institute of Geology for Mineral Resources, State Bureau of Nonferrous Metals Industry, Beijing 100012, China

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  • Received Date: February 11, 1999
  • Available Online: August 16, 2023
  • Published Date: August 14, 2000
    Graphical Abstract
    • Abstract
  • The rocks of the Kangbutiebao Formation suffered greenschist low amphibolite facies metamorphism. The isotope ages reported are all metamorphic ones. According to the colors, crystal shapes and U Pb isotopic composition of zircons, the zircons in acid volcanic rocks of the formation may be divided into inherited zircon, magmatic zircon, mixed zircon (containing a small core of inherited zircon) and metamorphic zircon. The volcanic rocks of the formation were determined using the single grain zircon U Pb method to have an age of 407.3±9.2 Ma, assigned to the Early Devonian age. Meanwhile the ages of two phases of metamorphism and reference age of the source region of volcanic rocks have been obtained.
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    • References (16)
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