东秦岭钼铅锌银多金属矿集区地球物理场特征及综合信息找矿模型
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  • 英文篇名:Geophysical Characteristics and Prospecting Model Based on Comprehensive Information in the Molybdenum,Lead,Zinc and Silver Polymetallic Ore Concentration Area of the East Qinling Mountains
  • 作者:程远 ; 秦曦 ; 赵晓晓 ; 王耀升 ; 秦学业 ; 宋双全 ; 牛耀 ; 崔小玲
  • 英文作者:CHENG Yuan;QIN Xi;ZHAO Xiao-xiao;WANG Yao-sheng;QIN Xue-ye;SONG Shuang-quan;NIU Yao;CUI Xiao-ling;Nonferrous metal mineral exploration engineering technology research center of Henan Province;Fifth Geological Brigade of Henan Bureau of nonferrous metals geology and mineral resources;Second Geological Brigade of Henan Bureau of nonferrous metals geology and mineral resources;
  • 关键词:钼铅锌银 ; 成矿规律 ; 地球物理场特征 ; 综合信息找矿模型 ; 找矿预测 ; 东秦岭
  • 英文关键词:Mo-Pb-Zn-Ag;;metallogenic regularity;;geophysical field characteristics;;integrated information prospecting model;;prospecting prognosis;;East Qinling Mountains
  • 中文刊名:DZKT
  • 英文刊名:Geology and Exploration
  • 机构:河南省有色金属矿产探测工程技术研究中心;河南省有色金属地质矿产局第五地质大队;河南省有色金属地质矿产局第二地质大队;
  • 出版日期:2018-07-15
  • 出版单位:地质与勘探
  • 年:2018
  • 期:v.54;No.478
  • 基金:河南省国土资源科技项目(编号:2011-072)资助
  • 语种:中文;
  • 页:DZKT201804009
  • 页数:15
  • CN:04
  • ISSN:11-2043/P
  • 分类号:91-105
摘要
东秦岭地区是我国重要的钼矿资源产地,已查明大型、超大型斑岩型钼(钨)矿床十多处;在这些钼(钨)矿床外围,近年又找到了许多达中大型规模的脉型铅锌银(金)矿床,形成钼(钨)铅锌银(金)多金属矿集区。区内众多的矿集区均分布于重磁推断的隐伏岩体(基)区及其边部附近,矿床的形成严格受隐伏岩体的侵入形态、顶面深度和所处构造的控制,二者具有非常明显的时空关系。研究矿集区地球物理场特征,推定隐伏岩体和断裂构造的分布,是深部找矿工作的有效途径。通过研究矿集区和典型矿床的地质特征和重、磁、电异常特征,建立了矿田和矿床的地质成矿模型和综合信息找矿模型。地质成矿模型描述了隐伏岩体、小花岗斑岩体和钼(钨)铅锌银(金)矿床的顺序约束,即隐伏岩体控制小花岗斑岩体的形成,小花岗斑岩体控制钼(钨)铅锌银(金)矿床的形成;综合信息找矿模型包括隐伏岩体、小花岗斑岩体和矿体(矿化体)的重、磁、电异常标志。根据找矿模型进行了深部找矿预测。研究成果对在东秦岭地区进行深部找矿工作具有重要意义。
        The East Qinling Mountains are an important producing area of China's molybdenum resources where over 10 places host large and superlarge porphyry molybdenum(tungsten)deposits.In the periphery of these deposits,many large and medium-sized vein-type lead-zinc-silver(gold)deposits have been found in recent years,forming a polymetallic ore concentration area.A large number of ore concentration areas are located in the gravity and magnetic inferred concealed rock masses(base)and their vicinity.The formation of the deposits is strictly controlled by the intrusive shape,the depth of the top and the structure of concealed rock mass,which have obvious temporal and spatial correlations.It is an effective approach to study the characteristics of geophysical fields in the ore concentrated area and estimate the distribution of the concealed rock mass and fault structure for searching for ores at depth.This work analyzed the geological characteristics of the ore concentration area and typical ore deposits and the features of gravity,magnetic and electrical anomalies to establish a metallogenic model and a prospecting model based on integrated data.The geological metallogenic model describes the constraint of hidden rock bodies and small granite porphyry bodies on the formation of Mo-W-Pb-Zn-Ag(Au)deposit.The comprehensive informationbased prospecting model includes the signs of gravity,magnetic and electrical anomalies of concealed rock mass,small granite porphyry bodies and ore bodies(mineralized bodies).According to the prospecting model,deep prospecting prediction carried out.The research results will be of great significance for deep prospecting in the East Qinling Mountains area.
引文
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