Isotopic Chronology of Jiulongnao Granite and Hongshuizhai Greisens-Type Tungsten Deposit in South Jiangxi Province
详细信息
- 责任者：Feng Chengyou (School of Earth and Space Sciences ; Peking University ; Beijing 100871 ; China) ; Huang Fan
- 刊名：Journal of Jilin University
- 出版年：2011
- 卷期：41(1)
- 关键词：钨矿 ; tungsten ores ; 铀—铅计时 ; U-Pb dating ; 江西 ; Jiangxi Province
- 页码：p.111-121
- 图表：7 illus., 3 tables, 28 refs.
- 分类号：1001
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
The age of tungsten mineralization and petrogenesis of its metallogenetic granitoids, and tectonic environment of the Jiulongnao tungsten orefield in southern Jiangxi Province are studied based on the field investigations and analysis on major, trace, and rare earth elements and dating. The Jiulongnao granite is characterized by high silica, alkali, metaluminous to weakly peraluminous, low Ca, Mg, and K2O/Na2O>1. Combined with chronological data of Chongyi-Dayu-Shangyou tungsten-tin polymetallic ore concentration area, the authors conclude that the age of both diagenesis and mineralization of this area are mainly concentrated in 150 to 160 Ma, which is corresponding to the time of the second regional large-scale mineralization in Mesozoic and these mineralization occurred at the same geodynamic background that is Jurassic intraplate extensional environment during the large-scale extension period of lithosphere.