MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS

ZHAO Zhen; HU Dao-gong; WU Zhen-han; LU Lu

Volume 18 Issue 2

Jun. 2012

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Article Navigation > Journal of Geomechanics > 2012 > 18(2): 178-186

ZHAO Zhen, HU Dao-gong, WU Zhen-han, et al., 2012. MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS. Journal of Geomechanics, 18 (2): 178-186.

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MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Chinese Academy of Geological Sciences, Beijing 100037, China

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Abstract

Abstract

Located in north side of Yaluzangbujiang Suture, Sangbujiala skarn-type copper deposit is one of the typical polymetallic deposits in the south subzone of the Gangdese metallogenic belt. For the purpose of finding out the mineralization time, the authors selected eight molybdenite samples from Sangbujiala ore district to perform the Re-Os dating. The age of Re-Os isotime line from molybdenite is 93.3±4.1 Ma, with an average model age of 94.5±1.6 Ma. Therefore, the Sangbujiala ore formed during Late Cretaceous, which belongs to the Neo-Tethys subduction stage. The Sangbujiala ore and other Cenozoic deposits showed that the Gangdese metallogenic belt occurring large-scale mineralization in the subduction stage, main collision stage, late collision stage and post-collisional stage, and to form a complete series of metallogenic evolution.
- Re-Os isotope age,
- molybdenite,
- skarn-type copper deposit,
- Gangdese,
- metallogenic evolution

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致谢: 野外工作得到西藏地质局第二地质大队巴登珠总工的指导与支持，特此致谢。

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MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS

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MOLYBDENITE Re-Os ISOTOPIC DATING OF SANGBUJIALA COPPER DEPOSIT IN THE SOUTH MARGIN OF THE EASTERN GANGDESE SECTION, TIBET, AND ITS GEOLOGICAL IMPLICATIONS

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