三维激电法在黔西北某铅锌矿勘查中的应用
Application of Three Dimensional Induced Polarization Method in the Survey of a Lead-zinc Mine in Northwestern Guizhou
张德实 1何帅 1杨炳南 1谢小峰 1沈小庆1
作者信息
- 1. 贵州省地矿局103地质大队,贵州 铜仁 554300;自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳 550081
- 折叠
摘要
黔西北铅锌成矿区是贵州省重要的铅锌产地之一,区内发现的某超大型铅锌矿深部及外围被认为仍具较大找矿潜力.随着埋深加大,地质条件更复杂,通过地球物理方法探查直接或间接的矿致异常愈加被认可.为研究三维激电方法在黔西北铅锌成矿区的勘查效果,首先在典型矿床开展了方法有效性及装置参数试验,结果显示梯度四极加三极装置联合反演显示的高极化率(17～20 mV/V)、低电阻率(158～251Ω·m)与已知铅锌矿体空间位置对应较好,然后应用到外围空白区,圈定了高极化、低电阻激电异常,经钻孔验证为含黄铁矿及铅锌矿(化)地质体.表明通过低电阻率高极化率圈定含黄铁矿物地质体异常,结合地质分析,间接指示铅锌矿体空间位置是本区三维激电方法应用的思路,对地区同类型铅锌矿地球物理勘探具有参考意义.
Abstract
The lead-zinc-coated area of Northwest Guizhou is one of the important lead-zinc producing areas of Guizhou Province.The deep and peripherals of pig arch ponds found in the area are considered to have a large amount of mineral potential.As the burial depth in-creases,the geological conditions become more complicated,the direct or indirect ore through the physical method of the earth will be ever more widely recognized.In order to ex-plore the effect of the three-dimensional induced polarization method in the northwestern Guizhou lead-zinc-forming area,the effectiveness and installation parameter test of the typi-cal mineral bed are first carried out in the typical mineral bed,results show that the high-pole rate(17～20 mV/V),the low resistance(158～251 Ω·m)of the symmetry and triode de-vice compared with the known lead-zinc ore body space position.Later,high polarization and low-resistance excitement are applied to the peripheral blank zone.The drilling verifies a brown iron ore,pyroneite and accompanying lead-zinc ore geological body,which indicates the location of the space-containing mineral abnormalities and indirectly indicates the spatial position of lead-zinc ore in this area as the application of the three dimensional induced polari-zation method in this area,which has reference for geophysical exploration of the same type of lead-zinc ore in the area.
关键词
三维激电法/黔西北/铅锌矿/黄铁矿/极化率Key words
three dimensional induced polarization method/northwest of Guizhou/lead-zinc mine/polarization rate引用本文复制引用
基金项目
贵州省科技计划项目(黔科合支撑[2023]一般172)
贵州省地矿局创新人才团队(黔地矿科合[2023]TD001)
贵州省地矿局创新人才团队(黔地矿科合[2023]TD002)
出版年
2024
NETL
NSTL
万方数据