Fission Track Thermochronology Evidence for Multiple Periods of Mineralization in the Wulonggou Gold Deposits, Eastern Kunlun Mountains, Qinghai Province  

作　　者：袁万明 莫宣学 张爱奎 陈小宁 段宏伟 李希 郝娜娜 王先美 

机构地区：[1]School of Earth Sciences and Resources, China University of Geosciences [2]No. 3 Exploration Institute of Geology and Mineral Resources of Qinghai Province [3]Exploration and Production Research Institute, China Petroleum & Chemical Corporation

出　　处：《Journal of Earth Science》2013年第4期471-478,共8页地球科学学刊（英文版）

基　　金：supported by the China Geological Survey (No.2011-03-04-06);Found Project of the Geology & Mineral Ex-ploration Development Authority of Qinghai Province;the National Natural Science Foundation of China (Nos. 41172088,40872141 and 41072160

摘　　要：It is a puzzle to determine metallogenetic ages in the world. This article uses zircon fission track （FT） dating to probe the mineralizing epochs of Wulonggou （五龙沟） gold ore deposits in eastern Kunlun （昆仑） Mountains. Total of six zircon FT ages have been obtained and can be divided into groups of 235-216 and 197-181 Ma, as well as 162 and 124 Ma, revealing multiple epochs of metalloge- netic processes took place in Wulonggou area, mainly first two age groups. The mineralizing ages be- come lower from northeast Yanjingou （岩金沟） to southwest Hongqigon （红旗沟）. The second epoch of 197-181 Ma is first achieved by this work. It is shown that the FT ages consist with other isotopic data and reflect different regional thermotectonic events.It is a puzzle to determine metallogenetic ages in the world. This article uses zircon fission track （FT） dating to probe the mineralizing epochs of Wulonggou （五龙沟） gold ore deposits in eastern Kunlun （昆仑） Mountains. Total of six zircon FT ages have been obtained and can be divided into groups of 235-216 and 197-181 Ma, as well as 162 and 124 Ma, revealing multiple epochs of metalloge- netic processes took place in Wulonggou area, mainly first two age groups. The mineralizing ages be- come lower from northeast Yanjingou （岩金沟） to southwest Hongqigon （红旗沟）. The second epoch of 197-181 Ma is first achieved by this work. It is shown that the FT ages consist with other isotopic data and reflect different regional thermotectonic events.

关 键 词：metallogenetic age mineralizing time fission track THERMOCHRONOLOGY gold deposit Wulonggou eastern Kunlun Mountains. 

分 类 号：P618.51[天文地球—矿床学]