Diagenetic and Metallogenic Geochronlogy Study of the Xishan W-Sn Ore Deposit in Yangchuang of Guangdong Province
详细信息
- 责任者：Mei Yuping (Wuhan Center ; China Geological Survey ; Wuhan 430223 ; China) ; Yang Hongmei
- 刊名：Acta Geologica Sinica
- 出版年：2013
- 卷期：87(9)
- 关键词：钨矿 ; tungsten ores ; 锡矿 ; tin ores ; 广东 ; Guangdong
- 页码：p.1370-1376
- 图表：5 illus., 2 tables, 27 refs.
- 分类号：1001
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
This study carries out study of zircon U-Pb dating on quartz samples from porphyritic monzonitic granite and ore body in the Xishan block using in LA-ICP-MS and Rb-Sr dating so to determine the formation time of Xishan W-Sn deposit and the wall rocks.The yielded zircon U-Pb age is 103±3Ma,and the quartz Rb-Sr iscochron plots give an age of 94±11Ma,both ages are within the margin of error.This indicates a coupled relationship in time and space between late-stage granite and deposits in the Xishan block,which occurred during Late Cretaceous.The tectonic setting of the Xishan block and deposits may be related to the voluminous magmatic activities caused by the extension of lithosphere in Nanling region in Late Cretaceous.