• 责任者：Yao Yuan (State Key Laboratory for Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Chen Jun
• 刊名：Mineral Deposits
• 出版年：2013
• 卷期：32(3)
• 关键词：A型花岗岩 ; A-type granite ; 铀—铅计时 ; U-Pb dating ; 湖南 ; Hunan Province
• 页码：p.467-488
• 图表：11 illus., 4 tables, 89 refs.
• 分类号：0801
• issnNo：ISSN0258-7106
• isbnNo：CN11-1965/P

     Zircon LA-MC-ICP-MS U-Pb analysis was carried out for the Xitian granite in east Hunan Province. Two samples from the first period of medium-(fine) grained porphyritic biotite monzonitic granite show ages of (220.9±0.6) Ma and (220.7±0.7) Ma, respectively. The results show that the Xitian granite is a product from partial melting of Proterozoic crust materials of Cathaysian block under the extensional setting. The confirmation of Xitian A-type granite has important significance for understanding the tectonic background of the east part of Hunan Province during Indosinian and Yanshanian movements. It also provides more evidence that there is W-Sn mineralization related to A-type granite during Indosinian period in South China.