Zircon U-Pb Geochronology, Geochemistry and Sr-Nd-Hf Isotopic Compositions of the Rhyolite Porphyry from the Zhoujiaoshan Deposit in Xiangshan Uranium Ore Field, Jiangxi Province, SE China
详细信息
- 责任者：Yang Shuiyuan (State Key Laboratory for Mineral Deposits Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Jiang Shaoyong
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(12)
- 关键词：铀矿 ; uranium ores ; 流纹斑岩 ; rhyolite porphyry ; 铀—铅计时 ; U-Pb dating ; 江西 ; Jiangxi Province
- 页码：p.3915-3928
- 图表：7 illus., 5 tables, 61 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
A rhyolite porphyry dyke was found in the Zhoujiashan uranium ore deposit from the Xiangshan uranium ore field, which intruded into the porphyroclastic lava in the Xiangshan volcanic complex. LA-ICP-MS zircon U-Pb dating shows that this rock was formed at (134.6±1.2) Ma (MSDW=1.2). In combination with previous studies, the authors concluded that the Xiangshan rhyolite porphyry may have formed in a back-arc extensional setting which related to subduction of the Palaeo-Pacific Plate.