喀喇昆仑罗布盖子大型铅锌矿成矿时代:对甜水海喀喇昆仑巨型铅锌矿带找矿勘查的启示  

Mineralization Age of the Karakorum Luobugaizi Large Lead-zinc Deposit:The Implication on Exploration of Tianshuihai-Karakorum Super-large Lead-zinc Deposits

作　　者：王威[1,2] 王家鑫 马华东[1,2] 朱炳玉 柳献军[1,2] WANG Wei;WANG Jiaxin;MA Huadong;ZHU Bingyu;LIU Xianjun(The Research Centerof Resource and Environment of Xinjiang,Urumuqi 830000,Xinjiang,China;The National 305 Project Office of Xinjiang,Urumuqi 830000,Xinjiang,China;Sichuan Xinli Geological Exploration Co.,Ltd.,Chengdu 610072,Sichuan,China)

机构地区：[1]新疆自然资源与生态环境研究中心,新疆乌鲁木齐830000 [2]新疆维吾尔自治区人民政府国家305项目办公室,新疆乌鲁木齐830000 [3]四川鑫立地质勘查有限公司,四川成都610072

出　　处：《西北地质》2021年第3期155-162,共8页Northwestern Geology

基　　金：第二次青藏高原综合科学考察研究项目“西昆仑喀喇昆仑稀有金属资源现状与远景评估”(2019QZKK080201),新疆自治区重大科技专项“和田南部喀喇昆仑稀有金属成矿带成矿规律研究”(2018A03004),新疆自治区重点研发计划“新疆和田县超大型锂铍铷矿床成因及资源综合利用研究”(2019B00011)。

摘　　要：西昆仑喀喇昆仑位于青藏高原北缘,是特提斯构造域的重要组成部分。近年来在该区有色金属找矿勘查工作取得重大突破,相继发现一批超大型、大中型铅锌矿床。罗布盖子大型铅锌矿位于甜水海喀喇昆仑有色金属成矿带最西段,获得详查资源量大于100万t。笔者报道了该矿床的基本地质特征,确定该矿床的形成与白垩纪岩浆岩演化晚期的热液有关,并获得与成矿关系密切的淡色脉体独居石U Pb年龄为(99.25±0.78)Ma,进一步证实该矿床属于岩浆热液矿床。依据区域地球化学勘查及区域地质背景的综合分析,认为在甜水海—喀喇昆仑分布的巨型铅锌矿带,受控于侏罗纪—白垩纪火山沉积盆地及白垩纪岩浆岩,该成矿带具有重大找矿潜力。The Western Kunlun-Karakorum is in the northern margin of the Qinghai-Tibet Plateau,belonging to the Tethyan tectonic domain.In recent years,the nonferrous metals exploration in this region has achieved significant breakthrough.Several large and super-large lead-zinc deposits have been discovered.Among them,the Luobugaizi large lead-zinc deposit,which is in the western section of the Tianshuihai-Karakorum nonferrous metals belt,has more than 1000,000 ton reserve.On the basis of the geological features the authors concluded that the deposit is a typical hydrothermal deposit related to the Cretaceous intrusive event,with the U Pb age of(99.25±0.78)Ma,hence the Luobugaizi lead-zinc deposit was hydrothermal type.Through the comprehensive analysis,this paper concluded that the lead-zinc deposits were controlled by the Jurassic-Cretaceous sedimentary magmatic rocks.This metallogenic belt has great potential for the future mineral exploration.

关 键 词：西昆仑喀喇昆仑造山带 有色金属成矿带 罗布盖子铅锌矿 成矿时代 找矿潜力 

分 类 号：P618.4[天文地球—矿床学]