东天山钨矿床时空分布、矿床类型及构造背景  

Temporal and spatial distribution,deposit type and tectonic setting of East Tianshan tungsten deposit

作　　者：邓小华 姜晓 吴艳爽[3] 薛东 赵鹏飞[4] 陈衍景 DENG XiaoHua;JIANG Xiao;WU YanShuang;XUE Dong;ZHAO PengFei;CHEN YanJing(School of Earth Science and Resources,Chang an University,Xi an 710054,China;Xinjiang Geology and Mineral Investment(Group)Co.Ltd.,Urumqi 830002,China;Xinjiang Mineral Resources Research Center,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China;School of Earth Science and Resources,China University of Geosciences,Beijing 100083,China;Key Laboratory of Orogenic Belts and Crustal Evolution of Ministry of Education,Peking University,Beijing 100871,China)

机构地区：[1]长安大学地球科学与资源学院,西安710054 [2]新疆地矿投资(集团)有限责任公司,乌鲁木齐830002 [3]中国科学院新疆生态与地理研究所新疆矿产资源研究中心,乌鲁木齐830011 [4]中国地质大学(北京)地球科学与资源学院,北京100083 [5]北京大学造山带与地壳演化教育部重点实验室,北京100871

出　　处：《岩石学报》2023年第6期1557-1578,共22页Acta Petrologica Sinica

基　　金：国家自然科学优秀青年基金项目(42222205);长安大学中央高校基本科研业务费专项资金(300102273301)联合资助。

摘　　要：东天山是中亚增生造山带的重要组成部分,蕴含了重要的铁、铜、镍、铅锌、金、钼、铷等矿床。近年来,东天山地区陆续发现了十余个大中型钨矿床,有望成为重要的钨矿资源基地。本文介绍了东天山地区钨矿床的地质特征、时空分布与构造背景,总结了东天山钨矿成矿规律,开展了成矿预测。东天山地区钨矿类型主要包括矽卡岩型、石英脉型及云英岩型,钨矿床的空间分布明显受控于前寒武纪结晶基底,成矿时间主要聚焦于三叠纪和晚石炭世。其中,中天山地块的矽卡岩型钨矿和东南缘的石英脉型钨矿形成于三叠纪,而中天山西南缘的矽卡岩型钨矿形成于晚石炭世,均与洋盆闭合之后的碰撞造山作用有关。根据东天山地区钨矿成矿规律,本文认为东天山地区钨矿找矿潜力巨大,提出了“前寒武纪基底+花岗岩+化探异常”的钨矿找矿预测思路,针对不同尺度的钨矿找矿勘查提出了建议。East Tianshan is an important part of the Central Asian Orogenic Belt,which contains an important copper-polymetallic mineral resource in China.In recent years,more than ten large and medium-sized tungsten deposits have been discovered in East Tianshan,which makes this area another dominant base for mineral resources of tungsten,rubidium and other rare metal minerals in Xinjiang.Based on previous studies,this paper introduces the geological characteristics,temporal and spatial distribution,and metallogenic geological background of typical tungsten deposits in East Tianshan.The tungsten deposits in East Tianshan include skarn,quartz-vein and greisen types,whose distribution is controlled by the Precambrian crystalline basement in this area,and they were mainly formed in the Triassic and Late Carboniferous.The skarn type tungsten deposits in the Central Tianshan Massif and the quartz vein type tungsten deposits in the southeastern margin of the Central Tianshan Massif were formed in the Triassic,while the skarn type tungsten deposits in the southwestern margin of Central Tianshan Massif were formed in the Late Carboniferous,and both of them are related to the collision orogeny after the closure of the ocean basin.According to the metallogenic regularity of tungsten deposits in East Tianshan,we propose that there is great prospecting potential for tungsten deposits in East Tianshan.We propose the prospecting idea of“Precambrian basement+granite+geochemical anomaly”,and put forward suggestions for tungsten ore prospecting and exploration in different scales.

关 键 词：钨矿床 时空分布 构造背景 成矿规律 成矿预测 东天山 

分 类 号：P618.67[天文地球—矿床学]