LA-ICP-MS Zircon U-Pb Dating of Two Types of Porphyry in the Yaguila Mining Area,Tibet

详细信息   

• 责任者：Huang Kexian (School of Earth and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zheng Yuanchuan
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2012
• 卷期：31(3)
• 关键词：铅锌矿床 ; lead-zinc deposit ; 银矿 ; silver ores ; 铀—铅计时 ; U-Pb dating ; 西藏 ; Tibet
• 页码：p.348-360
• 图表：8 illus., 1 table, 38 refs.
• 分类号：1001
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

摘要

    

///The Yaguila Pb-Zn-Ag deposit is a large-size ore deposit on the north margin of Gangdise. Some experts considered that the ore deposit was formed by marine jet flow superimposed by magmatism, whereas others thought that it was formed only by magmatism. Detailed drill hole investigations into the Yaguila ore deposit show that both the light brown porphyry and the gray quartz porphyry contain a large volume of ore-bearing stockwork quartz veins. Meanwhile, large amounts of massive ores are developed along the contact zone between the two types of porphyries and limestone. Therefore, both the light brown porphyry and the gray porphyry must have played an important role in mineralization of the Yaguila ore deposit. In this study, the authors analyzed zircon U-Pb ages for the two kinds of porphyries by using LA-ICP-MS.