青海省化隆县下什堂岩体地质-地球化学特征及其含矿性研究  

Geology and Geochemistry Characteristics and Ore-bearing Potential of the Xiashentang Intrusive Rocks in Hualong County,Qinghai Province

作　　者：张照伟[1,2] 李文渊[1] 高永宝[1,2] 张江伟[1] 郭周平[1] 李侃[1] 

机构地区：[1]西安地质矿产研究所,陕西西安710054 [2]长安大学地球科学与国土资源学院,陕西西安710054

出　　处：《大地构造与成矿学》2011年第4期596-602,共7页Geotectonica et Metallogenia

基　　金：国家科技支撑重点项目课题(2006BAB01A01);地质大调查项目(1212010918024;1212011121088;1212011121092和1212010911032)资助成果

摘　　要：作者近几年在青海省化隆地区开展了岩浆型铜镍矿资源潜力评价,重点对下什堂岩体进行了实地调查和研究。岩体地质特征、岩石地球化学特征及区域对比分析表明,下什堂岩体为一铁质系列的超基性-基性岩杂岩体,岩体分异好,有用元素Ni、Cu、Co丰度高,系有利成矿岩体;元素丰度和相关性揭示,该岩体在岩浆成岩演化过程中,硫逸度对元素富集起着明显控制作用,应更有利于硫化矿床的形成。The paper reports the results on magmatic type copper-nickel ore potential of the Xiashentang intrusive rocks in Hualong County,Qinghai.Petrological and geochemical characteristics of the rocks as well as regional comparative research show that the Xiashentang intrusive rocks are highly differentiated ferruginous ultrabasic-basic rocks with abundant ore metals like Ni,Cu and Co,which are favorable for ore formation.Ore metal abundances and their correlations demonstrate that the sulfur fugacity played a significant role in controling the enrichment of the metals during magma evolution.

关 键 词：岩体特征 地球化学 含矿性 下什堂 青海 

分 类 号：P581[天文地球—岩石学]