LA-ICP-MS zircon U-Pb dating of porphyries in the Qiagong iron skarn deposit, Tibet, China

被引：0

作者：

Xie, Yuling ^{[1
]}

Li, Yingxu ^{[1
]}

Chang, Zhaoshan

Cooke, David R.

Dominy, Simon C.

Li, Guangming

Zhang, Li

机构：

[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China

来源：

SMART SCIENCE FOR EXPLORATION AND MINING, VOL 1 AND 2 | 2010年

关键词：

Qiagong Fe skarn; Tibet; Zircon dating; LA-ICP-MS; BELT; IDAHO; MINE;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Monzonitic granite porphyry and quartz-phyric porphyry are related to hydrothermal alteration and Fe-Cu-Pb-Zn mineralization at the Qiagong skarn deposit in the middle part of the Gangdese mineralization belt, Tibet, China. Both of the intrusions are peraluminous. The monzonitic granite porphyry has a high-K calc-alkaline composition whereas the quartz-phyric porphyry is shoshonitic. Zircons from these two porphyries were dated using the LA-ICP-MS method and the U-Pb ages are 68.8 +/- 2.2 Ma and 64.6 +/- 1.6 Ma, respectively. The ages and metal associations for these two intrusions are unique in the Gangdese belt, and may lead to new understandings of the geodynamic setting.

引用

页码：303 / 305

页数：3

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