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勘查地球化学在西藏色岗地区铅锌找矿中的应用

The Application of Exploration Geochemistry to Prospecting of Pb-Zn Deposit in the Segang area, Lhünzê County, Tibet
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摘要 在西藏色岗扎西康铅锌整装勘查区内开展地球化学勘查。利用1∶5万水系沉积物测量编制异常图,发现区内Ag、Pb、Zn、Sb、Au、As、Bi、Mn等元素有不同规模的明显异常,且Ag、Pb、Sb、Au异常规模较大。通过土壤测量可以看出Ag、Pb、Zn、Sb、Au、As异常更显著。通过高精度遥感结果显示,化探异常位于线性构造附近;且已知矿化点位于断裂附近。通过土壤测量数据研究元素间组合关系,推断区内可能的矿床类型为为受构造控制的热液脉型铅锌矿,并对区内已发现的铅锌矿化点做着重介绍。研究表明区内寻找受构造控制的热液脉型铅锌矿有较好的找矿前景。 The preliminary study of the Zhaxikang Pb-Zn Comprehensive survey area in the Segang area,Lhünzê,Tibet is based on the study of regional geology,stream sediment survey,soil survey and ore-controlling structure.The elemental anomalous diagrams based on the stream sediment survey in the Segang area show marked anomalies of such elements as Ag,Pb,Zn,Sb,Au,As,Bi and Mn,especially in Ag,Pb,Sb and Au,while soil geochemical survey indicates marked anomalies of such elements as Ag,Pb,Zn,Sb,Au and As.Furthermore,the anomalies of such elements as Ag,Pb,Zn,Sb,Au and As occur near the linear structure,<http://dict.baidu.com/s?wd=linear%20structure>as indicated by the high-precision remote sensing image.Furthermore,the existing mineralized spots occur near the faults.From the elemental associations based on the soil anomalies it is inferred that the Pb-Zn deposits in the Segang area may be the mesothermal type Pb-Zn polymetallic ones controlled by the fault,and that the study area is expected to be a prospective area for the mesothermal type lead-zinc polymetallic deposit.
作者 李永灿 夏祥标 刘洪 董随亮 周清 吴建阳 李应栩 史功文 LI Yong-can;XIA Xiang-biao;LIU Hong;DONG Sui-liang;ZHOU Qing;WU Jian-yang;LI Ying-xu;SHI Gong-wen(Chengdu Center,CGS,Chengdu 610081;Tibet Huayu Mining Co.,Ltd.,Lhasa 850000)
出处 《四川地质学报》 2018年第4期595-598,604,共5页 Acta Geologica Sichuan
基金 国家重点研发计划(编号:2016YFC0600300 2016YFC0600308) 中国地质调查项目(编号:DD20160015)
关键词 地球化学勘查 铅锌矿 找矿 隆子县 geochemical exploration lead-zinc deposit prospecting Segang Lhünzê County Tibet
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