LA-ICP-MS zircon U-Pb ages of andesic tuffite from Bayan Har Group, Heishi North Lake area, west Kunlun, Xinjiang

TANG Mingying

2020 Vol. 39, No. 5

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TANG Mingying. LA-ICP-MS zircon U-Pb ages of andesic tuffite from Bayan Har Group, Heishi North Lake area, west Kunlun, Xinjiang[J]. Geological Bulletin of China, 2020, 39(5): 642-646.

Citation:

TANG Mingying. LA-ICP-MS zircon U-Pb ages of andesic tuffite from Bayan Har Group, Heishi North Lake area, west Kunlun, Xinjiang[J]. Geological Bulletin of China, 2020, 39(5): 642-646.

LA-ICP-MS zircon U-Pb ages of andesic tuffite from Bayan Har Group, Heishi North Lake area, west Kunlun, Xinjiang

TANG Mingying

No.8 Exploration Institute of Geology and Mineral Resources, Rizhao 276826, Shandong, China

Received Date: 21 January 2019

Revised Date: 07 March 2019

Publish Date: 15 May 2020

Abstract

Abstract

Using LA-ICP-MS method, the authors conducted zircon U-Pb isotopic dating of andesite tuffite of Bayan Har Group in the Heishi North Lake area, west Kunlun, Xinjiang.The results show that, after removing the 4 points with obvious U depletion, the weighted ²⁰⁶Pb/²³⁸U age of the remaining 10 measurement points is 252.9±9.1 Ma, which represents the formation time of the magmatic material of andesic tuffite, and the age suggests Late Permian-Early Triassic period.However, the formation of the andesic tuffite was usually later than the eruption, so the volcanic interlayer was formed in the Early Triassic.The discussion on andesic tuffite provides new evidence for the further study of the material composition and formation age of Bayan Har Group in this area.
- Heishi North Lake /
- Bayan Har Group /
- andesic tuffite /
- LA-ICP-MS /
- Early Triassic

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References

[1]	张雪亭, 王秉璋, 俞建, 等.巴颜喀拉残留洋盆的沉积特征[J].地质通报, 2005, 24(7):613-620. doi: 10.3969/j.issn.1671-2552.2005.07.004 CrossRef Google Scholar
[2]	陈守建, 李荣社, 计文化, 等.巴颜喀拉构造带二叠-三叠纪岩相特征及构造演化[J].地球科学, 2011, 36(3):393-408. Google Scholar
[3]	刘飞.松潘-甘孜及龙门山地区碎屑沉积岩地球化学研究[D].中国地质大学(北京)硕士学位论文, 2006.http://cdmd.cnki.com.cn/Article/CDMD-11415-2006065159.htm Google Scholar
[4]	崔加伟, 郑有业, 田立明, 等.松潘-甘孜造山带北部岗龙地区巴颜喀拉山群地球化学特征和锆石U-Pb年代学特征:对物源及构造环境的启示[J].矿物岩石地球化学通报, 2014, 35(4):719-742. Google Scholar
[5]	柏道远, 贺春平, 熊延望, 等.新疆且末县银石山地区巴颜喀拉山群时代的化石依据[J].资源调查与环境, 2004, 25(3):157-162. doi: 10.3969/j.issn.1671-4814.2004.03.001 CrossRef Google Scholar
[6]	冀六祥, 欧阳舒.青海省下三叠统巴颜喀拉山群下亚群的孢粉组合[J].古生物学报, 2006, 45(4):473-493. doi: 10.3969/j.issn.0001-6616.2006.04.004 CrossRef Google Scholar
[7]	白国典, 王坤, 陈泳霖, 等.青海卡巴纽尔多地区上三叠统巴颜喀拉山群牙形石的发现及其意义[J].西北地质, 2018, 51(4):24-32. doi: 10.3969/j.issn.1009-6248.2018.04.004 CrossRef Google Scholar
[8]	张耀玲, 胡道功, 吴珍汉, 等.青藏高原北部巴颜喀拉山群英安质沉凝灰岩LA-ICP-MS锆石U-Pb年龄[J].地质通报, 2015, 34(5):809-814. doi: 10.3969/j.issn.1671-2552.2015.05.001 CrossRef Google Scholar
[9]	中国地质调查局.中华人民共和国地质图(1:2500000)[M].北京:中国地图出版社, 2015. Google Scholar
①	山东省第八地质矿产勘查院.新疆西昆仑红山顶南一带1: 5万四幅区域地质调查报告.2018. Google Scholar
②	山西省地质调查院.1: 25万黑石北湖幅区域地质调查报告.2003. Google Scholar
③	陕西省地质调查院.1: 25万伯力克幅区域地质调查报告.2003. Google Scholar
④	贵州省地质调查院.1: 25万羊湖幅区域地质调查报告.2003. Google Scholar
⑤	陕西省地质矿产勘查开发局区域地质矿产研究院.新疆民丰县硝尔库勒一带1: 5万区域地质矿产调查.2010. Google Scholar
⑥	新疆维吾尔自治区地质矿产勘查开发局.新疆维吾尔自治区1: 250000(I44C001004)黑石北湖幅构造建造图.2010. Google Scholar