Formation Age and Source Tracing of the Tungsten-Bearing Granite Belt in the Pantuoshan-Yingzuihongshan Area, Inner Mongolia

详细信息   

• 责任者：Yang Hequn (Xi’an Institute of Geology and Mineral Resources ; Xi’an 710054 ; China) ; Zhao Guobin
• 刊名：Geology and Prospecting
• 出版年：2010
• 卷期：46(3)
• 关键词：钨矿 ; tungsten ores ; 花岗岩 ; granite ; 内蒙古 ; Inner Mongolia
• 页码：p.407-413
• 图表：4 illus., 3 tables, 23 refs.
• 分类号：1001
• issnNo：ISSN0495-5331
• isbnNo：CN11-2043/P

摘要

The Pantuoshan-Yingzuihongshan granite belt lies in the south of the suture zone between the Tarim plate and Kazakhstan plate, an uplift area in the passive continental margin, where the Pantuoshan tungsten deposit, Wangxushan tungsten deposit and Yingzuihongshan tungsten deposit are situated. The Zircon U-Pb dating of the Pantuoshan and Yingzuihongshan granites yields an age of 373.8±1.6 Ma～398.9±2.9 Ma, indicative of Devonian time. The Rb-Sr and Sm-Nd isotopic constituents of the whole rock have been measured, resulting in initial ⁸⁷Sr/⁸⁶Sr rations and εNd (t) values range between 0.722 158～0.745 368 and -6.55 118～-5.88 783, respectively. Because the initial ⁸⁷Sr/⁸⁶Sr ratios are considerably larger than 0.708 and εNd (t) values less than 0, it can be inferred that the tungsten-bearing granite belt originated from remelting materials in ancient continental crust.