LA-ICP-MS zircon U-Pb age and petrogeochemical characteristics of Late Triassic granite porphyry in Panshuihe area, West Kunlum Mountains, Xinjiang

TANG Mingying; GAO Zhenhua; DONG Zhenkun; ZHAI Xiaozhi; PAN Shiyang

2020 Vol. 39, No. 2-3

Article Contents

Article navigation > Geological Bulletin of China > 2020 > 39(2-3): 206-214

Next Article Previous Article

TANG Mingying, GAO Zhenhua, DONG Zhenkun, ZHAI Xiaozhi, PAN Shiyang. LA-ICP-MS zircon U-Pb age and petrogeochemical characteristics of Late Triassic granite porphyry in Panshuihe area, West Kunlum Mountains, Xinjiang[J]. Geological Bulletin of China, 2020, 39(2-3): 206-214.

Citation:

TANG Mingying, GAO Zhenhua, DONG Zhenkun, ZHAI Xiaozhi, PAN Shiyang. LA-ICP-MS zircon U-Pb age and petrogeochemical characteristics of Late Triassic granite porphyry in Panshuihe area, West Kunlum Mountains, Xinjiang[J]. Geological Bulletin of China, 2020, 39(2-3): 206-214.

LA-ICP-MS zircon U-Pb age and petrogeochemical characteristics of Late Triassic granite porphyry in Panshuihe area, West Kunlum Mountains, Xinjiang

1.
No.8 Exploration Institute of Geology and Mineral Resources, Rizhao 276826, Shandong, China
2.
Hubei Geological Research Laboratory, Wuhan 430034, Hubei, China

Received Date: 13 January 2019

Revised Date: 21 February 2019

Publish Date: 15 March 2020

Abstract

Abstract

In order to further enrich the data of intrusive rocks in Heshibeihu-Sandaohezi area of West Kunlun Mountains and provide a chronologic restriction for the formation age of the Panshuihe antimony deposit, the authors studied geology, petrology, geochemistry and chronology of the granodiorite porphyry in Panshuihe.The LA-ICP-MS zircon U-Pb dating yielded the age of Panshuihe granodiorite porphyry of 210.9±2.8 Ma, suggesting Late Triassic.Rock geochemistry shows that the content of SiO₂ in Panshuihe granodiorite porphyry is 66.1%~72.03%, the content of total alkali (Na₂O+K₂O) is 5.95%~8.29%, and the average value is 7.10%.The feature K₂O > Na₂O shows that the rock is rich in potassium and belongs to a high potassium (calc-alkaline) rock. The total REE is relatively low, and it shows strong enrichment of light rare earth elements, slight loss of europium (Eu=0.66~0.90), relative enrichment of Rb, Th, Ta, Ce and Hf, and relative dilution of Ba, K, P and Ti.The tectonic environment classification diagram shows that the Panshuihe granodiorite porphyry was formed in the tectonic environment of syn-collision, and that the syn-collision orogeny occurred on the northwestern margin of the Songpan-Garze landmass in this area from the Late Variscan to the Indosinian period, and the north lake of Heshibeihu-Sandaohezi magmatic belt in the area was formed by this orogenesis and the transition from ocean to land.
- Panshuihe area /
- granodiorite-porphyry /
- S-type granite /
- LA-ICP-MS zircon U-Pb age /
- geochemical characteristics

FullText(HTML)

References

[1]	吕金刚, 王炬川, 褚春华, 等.青藏高原可可西里带西段卧龙岗二长花岗斑岩锆石SHRMP U-Pb定年及其地质意义[J].地质通报, 2006, 25(6):721-724. Google Scholar
[2]	姜春发, 杨经绥, 冯秉贵, 等.昆仑开合构造[M].北京:地质出版社, 1992:10, 58-100. Google Scholar
[3]	蒋文成, 贾琦, 王艳辉, 等.新疆卧龙岗二长花岗斑岩地球化学特征及其岩石成因[J]吉林大学学报(地球科学版), 2015, 45(增刊1):1503. Google Scholar
[4]	杨万志, 张维洲, 屈迅, 等.西昆仑山东段库牙克断裂与康西瓦断裂、阿尔金断裂关系的地球化学依据[J].地质通报, 2005, 24(4):316-321. Google Scholar
[5]	陈文平, 吕金刚, 韩小明.ETM⁺影像数据在卧龙岗-黄羊岭一带锑矿找矿中的应用[J].新疆地质, 2009, 27(2):180-183. Google Scholar
[6]	李文渊, 张照伟, 高永宝, 等.秦祁昆造山带重要成矿事件与构造响应[J].中国地质, 2011, 38(5):1135-1149. Google Scholar
[7]	张友军, 段焕春, 贾琦, 等.新疆卧龙岗锑矿地质特征与成矿物质来源研究[J].矿床地质, 2014, 33:63-64. Google Scholar
[8]	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):613-619. Google Scholar
[9]	李兴振, 尹福光.东昆仑与西昆仑地质构造对比研究之刍议[J].地质通报, 2002, 21(11):777-783. Google Scholar
[10]	毕华, 王中刚, 王元龙, 等.西昆仑造山带构造-岩浆演化史[J].中国科学(D辑), 1999, 29(5):398-406. Google Scholar
[11]	董连慧, 冯足, 刘德权, 等.新疆成矿单元划分方案研究[J].新疆地质, 2010, 28(1):1-15. Google Scholar
[12]	翟庆国, 李才, 李惠民, 等.西藏冈底斯中部淡色花岗岩锆石U-Pb年龄及其地质意义[J].地质通报, 2005, 24(4):349-353. Google Scholar
[13]	潘裕生.西昆仑构造特征与演化[J].地质科学, 1990, 3:224-231. Google Scholar
[14]	李荣社, 计文化, 杨永成, 等.昆仑山及邻区地质[M].北京:地质出版社, 2008. Google Scholar
[15]	姜春发, 冯秉贵, 杨经绥.昆仑地质构造轮廓[J].中国地质科学院地质研究所刊1986, 第15号:70-78. Google Scholar
[16]	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-中国地质大学学报, 2011, 36(3):393-408. Google Scholar
①	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
②	新疆地矿局第一区域地质调查大队.新疆民丰县昆仑山卧龙岗一带1: 5万区域地质矿产调查报告.2003. Google Scholar
③	河南省地质科学研究所.新疆西昆仑温泉—独尖山一带1: 5万区域地质调查.2018. Google Scholar
④	陕西省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
⑤	新疆地矿局第一区域地质调查大队.新疆维吾尔自治区西昆仑尼雅河中上游1: 20万区域化探报告.2002. Google Scholar
⑥	新疆贵源拍卖有限公司.新疆民丰县黄羊岭锑矿详查报告.2008. Google Scholar
⑦	乌鲁木齐天和众邦地质勘查有限公司.新疆民丰县卧龙岗锑矿普查报告.2016. Google Scholar