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  • ISSN 1005-2518 
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Mineral Exploration and Resource Evaluation

Age,Petrogenesis and Tectonic Significance of Granodiorite in Kudeerte Gold Deposit,Qimantage Area,East Kunlun

  • Yong ZHANG ,
  • Aikui ZHANG ,
  • Shuyue HE ,
  • Zhigang LIU ,
  • Yongle LIU ,
  • Peng ZHANG ,
  • Feifei SUN
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  • The Third Geological Exploration Institute of Qinghai Province,Xining 810029,Qinghai,China

Received date: 2022-10-08

  Revised date: 2022-11-29

  Online published: 2023-03-27

Abstract

The Kudeerte gold deposit is a medium-sized gold deposit newly discovered in the western section of East Kunlun.Granodiorite is the host rock of gold deposit,but the petrogenesis,tectonic background and its relationship with mineralization are still unclear.The above questions have been discussed by studying the petrogeochemistry,U-Pb zircon geochronology,and Hf isotopes of the granodiorite in Kudeerte.The petrogeochemical characteristics show that the Kudeerte granodiorite is a set of quasi-aluminum-potassium basalt rocks,showing a right-inclined distribution pattern of light rare earth enrichment,with obvious negative Eu anoalies.The relative enrichment of elements such as large-ion lithophile elements Rb and K,the active incompatible elements Th and U,the depleted high field strength (Nb,Ta,Ti),HREE,and Sr elements,with the characteristics of shell-derived magma.Zircon LA-ICP-MS U-Pb dating showes that the age of granodiorite was (242.9±1.3)Ma(n=20,MSWD=0.65).The Kudeerte granodiorite is a Ⅰ-type granitic rock series of aluminous high potassium calc-alkaline rocks formed in the Middle Triassic.The tectonic environment is the transition environment between subduction and collision of oceanic plate.

Cite this article

Yong ZHANG , Aikui ZHANG , Shuyue HE , Zhigang LIU , Yongle LIU , Peng ZHANG , Feifei SUN . Age,Petrogenesis and Tectonic Significance of Granodiorite in Kudeerte Gold Deposit,Qimantage Area,East Kunlun[J]. Gold Science and Technology, 2023 , 31(1) : 1 -14 . DOI: 10.11872/j.issn.1005-2518.2023.01.136

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