LA-MC-ICP-MS Zircon U-Pb Dating and Sulfur Isotope Characteristics of Kendekeke Fe-Polymetallic Deposit, Qinghai Province
详细信息
- 责任者：Xiao Ye (Key Laboratory of Metallogeny and Mineral Resource Assessment ; MLR ; Institute of Mineral Resources ; CAGS ; Beijing 100037 ; China) ; Feng Chengyou
- 刊名：Mineral Deposits
- 出版年：2013
- 卷期：32(1)
- 关键词：铀—铅计时 ; U-Pb dating ; 铁矿 ; iron ores ; 多金属矿 ; polymetallic ores ; 硫同位素 ; sulfur isotopes ; 青海 ; Qinghai Province
- 页码：p.177-186
- 图表：illus., 3 tables, 35 refs.
- 分类号：1001
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
摘要
The Kendekeke iron ore deposit is located in the southwestern margin of Qaidam Basin,lying in Langyashan-Jingren area of Qimantag.It is similar to adjacent Yemaquan and Galinge iron polymetallic deposits in geotectonic background,ore-forming conditions and mineralization characteristics.Zircon LA-MC-ICP-MS U-Pb dating reveals that the age of the monzonite granite from the Kendekeke iron deposit is(229.51±0.48) Ma(n=19,MSWD=0.02),suggesting Late Triassic.εHf(t) varies from 0.8 to 5.9,the δ34S component(-2.0‰~+1.5‰) of the sulfide is close to zero,implying that the source was magma.Combined with filed materials,the Kendekeke iron polymetallic deposit is thought to be a skarn deposit related to the intrusion of Indosinian magma.