摘要
猪拱塘铅锌矿区位于扬子准地台西南缘、垭都-蟒硐断裂带北西端。本文在总结矿床地质特征的基础上,开展地物化遥勘查技术方法试验,结合找矿标志建立找矿模型。研究认为,沿断裂构造带分布的遥感信息异常多与铅锌矿化有关,音频大地电磁(AMT)测量圈定的低阻区域反映了铅锌矿体空间展布特征,金属活动态剖面以及有机烃异常与控矿断裂具有良好的对应性。归纳了地层岩性、构造、围岩蚀变、遥感蚀变信息、物探及化探等找矿标志,初步构建了找矿模型:成矿规律研究查明主控因素、预测找矿方向-遥感解译厘定构造格架,确定成矿远景区-化探异常结合成矿地质条件分析圈定找矿靶区-AMT等物探方法定位矿致异常空间位置-钻探工程验证圈定矿体。将该模型应用于猪拱塘外围找矿勘查,指导钻孔布设,于深部揭露铅锌矿体。
The Zhugongtang lead-zinc deposit is located within the southwestern margin of the Yangtze paraplatform and in the northwest end of the Yadu-Mangdong fault zone.In this paper,on the basis of summarizing geological characteristics of the deposit,we have carried out tests of geological,geophysical,geochemical,and remote sensing exploration technical methods and then have established the mineral prospecting model by combining relevant mineral prospecting indicators.Researches show that anomalies of remote sensing information distributed along the faulting fracture belts are mostly related to the lead-zinc mineralization.The low resistance anomaly defined by the AMT survey reflects the spatial distribution characteristics of the lead-zinc orebody.The metal activity profile and organic hydrocarbon anomaly have good correspondence with the ore-controlling fault.We have summarized ore-prospecting indicators including the stratigraphic lithology,structure,wallrock alteration,remote sensing information of alteration,geophysical and geochemical anomalies,and then have preliminary established the following ore-prospecting model:to identify main ore-controlling factors and the prediction of ore-prospecting direction based on studies of the metallogenic regularity-to determine structural frameworks and potential ore-prospecting targets based on the interpretation remote sensing data-to outline ore-prospecting targets based on the analysis of geochemical anomalies combined with metallogenic geological conditions-to locate spatial locations of ore-induced anomalies by using geophysical prospecting methods such as the AMT-to delineate orebodies through the verification of drilling engineering.The model has been applied to undertake the prospecting and exploration in the periphery of the Zhugongtang deposit,such as to guide the layout of boreholes and to delineate lead-zinc orebodies in the depth.
作者
阮伟玲
杜蔺
郑明泓
卢卯
张伦尉
吴莎
RUAN Wei-ling;DU Lin;ZHENG Ming-hong;LU Mao;ZHANG Lun-wei;WU Sha(Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou,Guiyang 550005,China;Geological and Mineral Exploration Institute,Non-ferrous Metals and Nuclear Industry Geological Exploration Bureau of Guizhou,Guiyang 550005,China;Institute of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China)
出处
《矿物学报》
CAS
CSCD
北大核心
2023年第6期894-902,共9页
Acta Mineralogica Sinica
基金
贵州省找矿突破战略行动重大协同创新项目(编号:黔科合战略找矿[2022]ZD004)
国家自然科学基金项目(批准号:U1812402)。
关键词
勘查技术方法试验
找矿标志
找矿模型
猪拱塘铅锌矿床
黔西北
Test of exploration technical method
ore-prospecting indicator
ore-prospecting model
the Zhugongtang lead-zinc deposit
the northwestern Guizhou
