大功率激电测量在矿区预查中的应用——以拓新沟多金属矿为例
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摘要
在拓新沟多金属预查中,根据预查区金银铜铁多金属成矿特征及地质构造特征,结合勘探区水系沉积物及蚀变破碎带异常共生、组合、异常带分布特征以及岩(矿)石电性特征,选定2个化探异常,开展大功率激电扫面。通过电性特征分析化探异常的垂向延伸和一定深度电性特点,利用电法结果优选异常,并进行工程验证,对含矿、矿化层进行定位与追踪,最终发现金矿(矿化)层。实践证明,大功率激电测量在实际应用中效果良好,也为预查区下一步开展工作提供指导。
High-power IP sweeping is carried out for two selected geochemical anomalies in the pre-examination of multi-metals in Tuoxingou. In the analysis, the characteristics of polymetallic metallogenesis and geological structure of gold, silver, copper and iron in the pre-examination area are taken into account, and the anomalous symbiosis, association and distribution of sediments and altered fracture zones in the exploration area are combined, as well as the lithologic(ore) electricity. Based on the analysis of the vertical extension and certain depth of the electrical characteristics of the anomalies, the results and engineering verification indicate that the electrical method is useful to optimize the anomalies. This work proves that high-power IP measurement has a good effect in practical application, which provides guidance for the pre-inspection area.
High-power IP sweeping is carried out for two selected geochemical anomalies in the pre-examination of multi-metals in Tuoxingou. In the analysis, the characteristics of polymetallic metallogenesis and geological structure of gold, silver, copper and iron in the pre-examination area are taken into account, and the anomalous symbiosis, association and distribution of sediments and altered fracture zones in the exploration area are combined, as well as the lithologic(ore) electricity. Based on the analysis of the vertical extension and certain depth of the electrical characteristics of the anomalies, the results and engineering verification indicate that the electrical method is useful to optimize the anomalies. This work proves that high-power IP measurement has a good effect in practical application, which provides guidance for the pre-inspection area.
引文
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[3]王超.激发极化法在找矿中的应用[J].科技资讯,2012(8):116.
[4]曾歌明,张胜业,陈长敬,等.激发极化法在某铅锌矿勘探中的应用[J].工程地球物理学报,2007,4(5):466-469.
[5]玉苏普艾力·喀迪尔,陈川,刘雷.新疆博格达东段多金属矿带化探原生晕与激电测量相结合的找矿效果[J].现代地质,2015(3):713-720.
[6]李金铭.地电场与电法勘探[M].北京:地质出版社,2007:1-100.
[7]张胜业,潘玉玲.应用地球物理学[M].武汉:中国地质大学出版社,2004.
[8]李舟波,孟令顺,梅忠武.资源综合地球物理勘查[M].北京:地质出版社,2004.
[9]杨合群,姜寒冰,谭文娟,等.西北地区重要矿产概论[M].武汉:中国地质大学出版社,2017.
[10]中华人民共和国国土资源部.时间域激发极化法技术规程:DZ/T0070—2016[S].北京:中国标准出版社,2016.