The age of basic intrusive and extrusive rocks in Funing area, southeast Yunnan Province

LIU Bing; LI Xiaojun; GUAN Qi; CHEN Ke; CHEN Guangyan; LI Weike; HU Shaobin; ZHANG Hu; YU Saiying

2018 Vol. 37, No. 11

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LIU Bing, LI Xiaojun, GUAN Qi, CHEN Ke, CHEN Guangyan, LI Weike, HU Shaobin, ZHANG Hu, YU Saiying. The age of basic intrusive and extrusive rocks in Funing area, southeast Yunnan Province[J]. Geological Bulletin of China, 2018, 37(11): 2021-2031.

Citation:

LIU Bing, LI Xiaojun, GUAN Qi, CHEN Ke, CHEN Guangyan, LI Weike, HU Shaobin, ZHANG Hu, YU Saiying. The age of basic intrusive and extrusive rocks in Funing area, southeast Yunnan Province[J]. Geological Bulletin of China, 2018, 37(11): 2021-2031.

The age of basic intrusive and extrusive rocks in Funing area, southeast Yunnan Province

Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China

Received Date: 07 January 2018

Revised Date: 12 May 2018

Publish Date: 15 November 2018

Abstract

Abstract

Basic rocks composed of Banwa-type intrusive rocks, Anding-type intrusive rocks and Longkang-type extrusive rocks are well outcropped in Funing area, southeast Yunnan Province, but they lacked chronological information. Based on regional geological investigation in Funing area, the authors applied LA-ICP-MS tech to determining the U-Pb age of zircons from intrusive and extrusive basic rocks. The weighted averages of 254.0±2.0Ma and 244.2±4.4Ma were obtained from Banwa-type intrusive rocks and Anding-type intrusive rocks respectively, and the weighted averages of 251.9±3.0Ma and 255.92±0.72Ma were obtained from Longkang-type extrusive rocks. Combined with field geological survey and comprehensive research, the authors hold that the age of the Anding-type intrusive rocks should be Middle Triassic, and the age of the Banwa-type intrusive rocks and the Longkang-type extrusive rocks should be Late Permian.
- southeast Yunnan Province /
- Funing area /
- basic intrusive rocks /
- basic extrusive rocks /
- zircon U-Pb ages

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References

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