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Gold Science and Technology >

2018 , Vol. 26 >Issue 4: 465 - 472

DOI: https://doi.org/10.11872/j.issn.1005-2518.2018.04.465

Geochronology，Geochemical Characteristics of Molybdenum Ore-bearing Syenogranite from Xiaozhaohuo Area in East Kunlun and Its Geological Significance

  • Jing CHEN ,
  • Jichun HU ,
  • Yongzhuo LU ,
  • Shiying LU ,
  • Shulin WANG ,
  • Beibei XU
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  • 1Qinghai Geological Survey Institue，The Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources Laboratory，Xining 810012，Qinghai，China

Received date: 2018-03-06

  Revised date: 2018-05-23

  Online published: 2018-10-17

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Highlights

Xiaozaohuo area is located in the northern region of the Middle Kunlun magmatic arc，next to the Qimantage back-arc basin in the north，which is one of the large number of copper molybdenum polymetallic mineralized points in Lalingzaohuo monoblock exploration area.The ore-bearing intrusion is syenogranite.Detailed studies on geochronology，element geochemical were carried out for the syenogranite.The results show that the age of syenogranite is （226±1）Ma，geochemical analysis show that it belongs to shoshonitic series，with weaker Eu negative anomaly （0.75～0.86），depleted of Nb，Ta，Ti，P，Ba，rich in Rb，Th，U，K；Rb/Sr ratios of 1.90 on average，Nb/Ta ratios of 11.33 on average，these characteristics are reflected the crust sources of the magma genesis.Combined with studies of igneous diagenetic assemblages in this area，this paper proposed that the diagenetic mineralization setting in Xiaozaohuo area is post-collision intracontinental orogenic stage in the late Triassic.

Cite this article

Jing CHEN , Jichun HU , Yongzhuo LU , Shiying LU , Shulin WANG , Beibei XU . Geochronology，Geochemical Characteristics of Molybdenum Ore-bearing Syenogranite from Xiaozhaohuo Area in East Kunlun and Its Geological Significance[J]. Gold Science and Technology, 2018 , 26(4) : 465 -472 . DOI: 10.11872/j.issn.1005-2518.2018.04.465

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