东天山博格达裂谷照壁山多金属矿地质特征及成矿远景分析  

Geological characteristics and metallogenic prospect analysis of Zhabishan polymetallic deposit in Bogda Rift,Eastern Tianshan Mountains

作　　者：马剑 皮宏章 MA Jian;PI Hong-zhang(The Second Regional Geological Survey Brigade,Xinjiang Bureau of Geology and Mineral Exploration and Development,Changji 831100,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第二区域地质调查大队,新疆昌吉831100

出　　处：《世界有色金属》2023年第11期67-69,共3页World Nonferrous Metals

摘　　要：矿区大地构造位于博格达晚古生代弧后裂陷盆地,受区域逆冲推覆构造影响,连续紧闭褶皱和次级小断层发育,构造主要为北西-南东方向为主。构造薄弱带热液蚀变较强,大规模的化探异常均沿次级构造分布,与区域成矿关系较为密切。矿区内出露地层主要为石炭系,其中上石炭统柳树沟组第三岩性段为主要含矿层,含矿岩性主要为安山质凝灰岩。该区域金、铅、锌矿的形成与矿区发育的火山机构关系较为密切,矿体及蚀变带,分布于距火山机构中心有一定距离的裂隙带中。它们即是火山气液的通道,又是金、铅锌矿的容矿构造。火山机构应作为寻找该类矿床的重要标志。The mining area is located in the Bogda late Paleozoic back-arc rifted basin.Under the influence of regional thrusting nappe structure,continuous closed folds and secondary minor faults are developed,and the structure is mainly in the NW-southeast direction.The tectonic weak zone has strong hydrothermal alteration,and the large-scale geochemical anomalies are distributed along the secondary structures,which are closely related to regional mineralization.The outcrop beds in the mining area are mainly Carboniferous,in which the third lithologic member of the Upper Carboniferous Liushugou Formation is the main ore-bearing bed,and the ore-bearing lithology is mainly Andesitic tuff.The formation of gold,lead and zinc deposits in this area is closely related to the volcanic mechanism developed in the mining area.The orebodies and alteration zones are distributed in the fracture zone with a certain distance from the center of the volcanic mechanism.They are volcanic gas-liquid channels and ore-bearing structures of gold and lead-zinc deposits.The volcanic mechanism should be used as an important indicator to search for such deposits.

关 键 词：东天山 博格达裂谷 多金属成矿 远景分析 

分 类 号：P618.2[天文地球—矿床学]