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物探与化探  2017, Vol. 41 Issue (4): 594-604    DOI: 10.11720/wtyht.2017.4.02
  本期目录 | 过刊浏览 | 高级检索 |
物化探综合方法在天井窝钨多金属找矿中的应用
陈伟1, 周新鹏2, 贺根文1, 李伟1
1.江西省地质矿产勘查开发局 赣南地质调查大队,江西 赣州 341000;
2.山西省地球物理化学勘查院,山西 运城 044004
The application of integrated geophysical and geochemical methods to the prospecting in the Tianjingwo tungsten polymetallic ore deposit
CHEN Wei1, ZHOU Xing-Peng2, HE Gen-Wen1, LI Wei1
1.South Jiangxi Geological Surveying Party, Jiangxi Bureau of Geology and Mineral Resources, Ganzhou 341000, China;
2. Geophysical-Geochemical Exploration Institute of Shanxi, Yuncheng 044004, China
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摘要 为了配合九龙脑矿田深部找矿突破,在天井窝钨多金属矿示范区开展面积与剖面测量相结合的物化探综合勘查技术方法,圈定“一带(古亭灰岩与九龙脑复式岩体东西向接触带)三区(Ⅰ、Ⅱ、Ⅲ异常)”为成矿最有利区段。通过钻探工程验证揭露多层厚度1.62~19.37 m似层状、接触带矽卡岩型钨多金属矿体,初步建立起该区矽卡岩型钨多金属矿体物化探综合找矿模式——“二低三高”,即低重力、低视电阻率,高强度的ΔT异常、高视极化率ηs异常,并有地球化学W、Sn、Bi、As、Sb、壤中汞气等高异常。区内钨多金属成矿与燕山期岩浆活动关系密切,成矿受地层、岩浆、构造复合控制,因此选区应在反映岩体或隐伏岩体的重力低异常区及断裂构造的壤中汞气异常区。基于以上认识,指出区内南边深部具备地层(古亭灰岩)—构造(F1、F2断裂)—岩浆岩(深部隐伏岩突)成矿有利条件的最佳耦合,深部找矿潜力较大。
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Abstract:In order to cooperate with deep prospecting in the Jiulongnao orefield, the authors carried out combined profile and area measurement of geophysical-geochemical integrated exploration technique and delineated "one belt (east-west contact zone of Guting limestone and Jiulongnao complex massif) and three areas (Ⅰ, Ⅱ, Ⅲ anomaly)" as the most favorable metallogenic zone. Drilling verification disclosed multi-layered stratiform and granite contact zone skarn type tungsten polymetallic orebodies 1.62~19.37 m in thickness. Consequently, a geophysical-geochemical comprehensive prospecting model for this area was built up, characterized by "two-lows and three-highs". The two-lows are low gravity and low apparent resistivity, whereas the three-highs refer to high ΔT, high apparent polarization and high amounts of chemical substances (W, Sn, Bi, As, Sb, Hg etc.) in the earth. The tungsten polymetallic mineralization in the area was closely related to magmatic activities in Yanshanian period, and mineralization was controlled jointly by strata, magmatic activity and structure. Therefore, the selection of survey areas must be chosen around granite boby or hidden granite with strong responses to low gravity and fault structure with strong Hg anomaly in soil. Based on the above understanding, it is pointed out that the depth of the southern part of the area has metallogenic potential in that it is equipped with optimum coupling of formation (Guting limestone)-structure (F1, F2 fault)-magmatic rock (deep concealed granite) , thus having favorable metallogenetic conditions.
收稿日期: 2016-05-18      出版日期: 2017-08-20
:  P6312  
基金资助:国土资源部公益性行业科研专项“南岭东段九龙脑矿田成矿规律与深部找矿示范”(201411050)下属课题“南岭东段九龙脑矿田地质与地球化学测量”(201411050-2)
作者简介: 陈伟(1984-),男,江西泰和县人,2011年毕业于成都理工大学矿产普查与勘探专业,主要从事地质矿产勘查与相关科研工作。
引用本文:   
陈伟, 周新鹏, 贺根文, 李伟. 物化探综合方法在天井窝钨多金属找矿中的应用[J]. 物探与化探, 2017, 41(4): 594-604.
CHEN Wei, ZHOU Xing-Peng, HE Gen-Wen, LI Wei. The application of integrated geophysical and geochemical methods to the prospecting in the Tianjingwo tungsten polymetallic ore deposit. Geophysical and Geochemical Exploration, 2017, 41(4): 594-604.
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https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2017.4.02      或      https://www.wutanyuhuatan.com/CN/Y2017/V41/I4/594
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