哈萨克斯坦北东天山浅成低温热液型金矿床成矿时代及构造背景

CORC > 北京大学 > 地球与空间科学学院

	哈萨克斯坦北东天山浅成低温热液型金矿床成矿时代及构造背景; Metallogenic epoch and tectonic setting of epithermal gold deposits in the northeastern Kazakhstan Tianshan
	武广 ; 陈毓川 ; 陈衍景
刊名	岩石学报
	2010
关键词	阿尔哈尔雷金矿床乌仁科布拉克金矿床浅成低温热液型金矿床 40Ar/39Ar定年构造背景哈萨克斯坦北东天山 Arharlei Au deposit Wurenkebulake Au deposit Epithermal gold deposits (40)Ar/(39) Ar age Tectonic setting Northeastern Kazakhstan Tianshan
英文摘要	哈萨克斯坦北东天山地区是中亚造山带重要的浅成低温热液型金矿床产出地区,但其成矿年代学研究非常薄弱。为确定成矿时代,作者运用高精度激光40Ar/39Ar定年法对阿尔哈尔雷金矿床和乌仁科布拉克金矿床的赋矿围岩进行了年龄测定。获得阿尔哈尔雷金矿床安山岩样品20个点40Ar/39Ar等时线年龄为304±7Ma(MSWD=6),乌仁科布拉克金矿床安山玄武岩样品21个点40Ar/39Ar等时线年龄为280±6Ma(MSWD=2.4),表明哈萨克斯坦北东天山地区浅成低温热液型金矿床主要形成于晚石炭世末期-早二叠世。初步的岩石学、地球化学研究表明,哈萨克斯坦北东天山地区晚石炭世末期-二叠纪火山岩主要为流纹岩、...; A lot of epithermal gold deposits and occurrences, such as Arharlei and Wurenkebulake deposits, have been found in the northeastern Kazakhstan Tianshan, which is one of the important epithermal gold metallogenic belts in the Central Asian Orogenic Belt. Whereas, the metallogenetic chronology study of the gold deposits is poor. To time the mineralization, the authors dated andesite and andesitic basalt from the host rocks of the Arharlei and Wurenkebulake deposits, respectively, using high-resolution laser-ablation (40)Ar/(39) Ar method. Twenty analyses of andesites from the Arharlei deposit yielded a (40)Ar/(39) Ar isochron age of 304 +/- 7Ma (MSWD = 6), and 21 of andesitic basalts from the Wurenkebulake deposit deposit yielded a (40)Ar/(39) Ar isochron age of 280 +/- 6Ma (MSWD = 2.4). This shows that the gold deposits in the northeastern Kazakhstan Tianshan have been formed between end Late Carboniferous and Early Permian. Petrology and geochemistry primarily studied by the authors show that the volcanic rocks related to these epithermal gold deposits in this region are mainly of high-K calc-alkaline and shoshonite series, and comprise mainly rhyolite, trachyandesite, basaltic trachyandesite, basaltic andesite, trachybasalt and basalt, with bimodal features. The epithermal gold deposits of the end Late Carboniferous might be formed in a transitional period from continent-continent collision to rift environments, whilst the Permian epithermal gold deposits were formed in an intracontinental rift setting.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000286452000019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; 12; 3683-3695; 26
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/241946]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	武广,陈毓川,陈衍景. 哈萨克斯坦北东天山浅成低温热液型金矿床成矿时代及构造背景, Metallogenic epoch and tectonic setting of epithermal gold deposits in the northeastern Kazakhstan Tianshan[J]. 岩石学报,2010.
APA	武广,陈毓川,&陈衍景.(2010).哈萨克斯坦北东天山浅成低温热液型金矿床成矿时代及构造背景.岩石学报.
MLA	武广,et al."哈萨克斯坦北东天山浅成低温热液型金矿床成矿时代及构造背景".岩石学报 (2010).