LA-ICPMS zircon U-Pb age of the Yemaquan granodiorite in the Qimantag area, Qinghai Province and its geological implications

SONG Zhongbao; ZHANG Yulian; JIA Qunzi; CHEN Xiangyang; JIANG Lei; HE Shuyue; LI Jinchao; YANG Tao; QUAN Shoucun; ZHANG Xiaofei; LI Yazhi; TANG Zhuo

2016 Vol. 35, No. 12

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SONG Zhongbao, ZHANG Yulian, JIA Qunzi, CHEN Xiangyang, JIANG Lei, HE Shuyue, LI Jinchao, YANG Tao, QUAN Shoucun, ZHANG Xiaofei, LI Yazhi, TANG Zhuo. LA-ICPMS zircon U-Pb age of the Yemaquan granodiorite in the Qimantag area, Qinghai Province and its geological implications[J]. Geological Bulletin of China, 2016, 35(12): 2006-2013.

Citation:

SONG Zhongbao, ZHANG Yulian, JIA Qunzi, CHEN Xiangyang, JIANG Lei, HE Shuyue, LI Jinchao, YANG Tao, QUAN Shoucun, ZHANG Xiaofei, LI Yazhi, TANG Zhuo. LA-ICPMS zircon U-Pb age of the Yemaquan granodiorite in the Qimantag area, Qinghai Province and its geological implications[J]. Geological Bulletin of China, 2016, 35(12): 2006-2013.

LA-ICPMS zircon U-Pb age of the Yemaquan granodiorite in the Qimantag area, Qinghai Province and its geological implications

1. Xi'an Center of Geological Survey, China Gelolgical Survey, Xi'an 710054, Shaanxi, China;
2. Qinghai No.3 Institute of Geology and Mineral Resources Exploration, Xining 810012, Qinghai, China;
3. Tianjin Geological Mineral Testing Center, Tianjin 300191, China

Received Date: 12 January 2016

Revised Date: 02 May 2016

Publish Date: 15 December 2016

Abstract

Abstract

Qimantag area in the western part of the East Kunlun orogenic belt is a characteristic intrusive magmatic structural belt, and is also an important polymetallic metallogenic belt. The Yemaquan Fe-Cu polymetallic ore district is a typical contact metasomatism skarn deposit. In this study, the authors obtained the petrogenetic age of the granodiorite (226±2Ma) by using LA-ICP-MS zircon U-Pb dating. The result is in agreement with previous isochron age of 225.0±4.0Ma for skarn copper molybdenum polymetallic ore and 230.1±4.7Ma for skarn type molybdenum ore obtained by molybdenite Re-Os method. It is thus held that the petrogenetic and ore-forming epoch is Middle-Late Triassic.
- skarn-type /
- Fe-Cu deposit /
- Middle-Late Triassic /
- LA-ICP-MS zircon U-Pb ages /
- granodiorite /
- Yemaquan /
- Qimantag

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References

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