Volume 25 Issue S1
May  2019
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Article Navigation >  Journal of Geomechanics  > 2019  >  25(S1): 44-48
YANG Fengchao, YANG Jialin, GU Yuchao, et al., 2019. EMPLACEMENT AND DEFORMATION AGE OF SURROUNDING GNEISSIC GRANITE IN WULONG GOLD DEPOSIT, EASTERN LIAONING PROVINCE: SHRIMP U-PB AGE. Journal of Geomechanics, 25 (S1): 44-48. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.008
Citation: YANG Fengchao, YANG Jialin, GU Yuchao, et al., 2019. EMPLACEMENT AND DEFORMATION AGE OF SURROUNDING GNEISSIC GRANITE IN WULONG GOLD DEPOSIT, EASTERN LIAONING PROVINCE: SHRIMP U-PB AGE. Journal of Geomechanics, 25 (S1): 44-48. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.008
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EMPLACEMENT AND DEFORMATION AGE OF SURROUNDING GNEISSIC GRANITE IN WULONG GOLD DEPOSIT, EASTERN LIAONING PROVINCE: SHRIMP U-PB AGE

doi: 10.12090/j.issn.1006-6616.2019.25.S1.008

  • Shenyang Institute of Geology and Mineral Resources, China Geological Survey, Shenyang 110034, Liaoning, China

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  • Published: 2019-05-01
    Abstract
  • In order to determine the emplacement and deformation age of the surrounding rocks of the Wulong gold deposit and further explore the transition period of Late Mesozoic tectonic regime in eastern Liaoning, using petrographic observation and zircon SHRIMP U-Pb dating techniques, the Wulong rock mass around the Wulong gold deposit in eastern Liaoning, the intrusive granulite porphyry veins in the Wulong rock mass, and the Sanguliu rock mass were studied. The results show that the Wulong rock mass is a typical rock with a weak gneissic, gneissic structure, the granitic porphyry veins, which have been invaded, have also been deformed, and the Sanguliu rock mass is not deformed. The Wulong rock mass SHRIMP U-Pb age is 159.2±1.9 Ma and 160.0±1.4Ma, granite porphyry is 132.14±0.85 Ma and the Sanguliu rock mass is 122-124 Ma. The Liaodong Wulong rock mass experienced the push, the extrusion event ending at 132-124 Ma. The overburden and squeeze events of the Late Jurassic in Liaodong area are closely related to the subduction of the ancient Pacific plate to Eurasia. The metallogenic tectonic setting of the Wulong gold deposit is also related to this subduction.

     

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