激发极化法在甘肃瓜州县辉铜山铜矿外围隐伏铜矿勘查中的应用
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摘要
通过分析辉铜山铜矿体特征及矿山开采时深部找矿成果,发现矿体具SE向倾伏趋势,地表被大面积第四系覆盖。对测区岩(矿)石进行物性测量,发现区内矿石具高极化中低阻电性特征,与围岩电性差异明显,可用激发极化法进行深部地球信息探测。在1∶1万矿区地质填图基础上,采用激电中梯和激电测深2种方法进行矿产勘查,圈定2处明显的激电异常。结合区内地质特征和钻孔资料,发现高极化中低阻激电异常与推测的隐伏铜矿体具良好的空间对应关系,显示该矿区具良好的深部找矿潜力,为进一步详查工作提供了依据。
By analyzing the ore body characteristics of Huitongshan Copper Mine and the deep prospecting results, it is found that the orebody tends to dip southward and eastward, and the surface is covered by a large area of Quaternary.The physical properties of the rock(ore) in the survey area are measured,It is found that the ore in the area has the electrical characteristics of "high polarization, medium resistance", which are obviously different from the electrical properties of the surrounding rock. Therefore, the induced polarization method is used to deep ground. Spherical information detection. On the basis of geological mapping of 1:10,000 mining area, two methods of intermediate gradient induced polarization measure,electrical sounding of induced polarization are used to carry out metal mineral exploration, and two obvious IP anomalies are delineated. Combining with geological characteristics and borehole data in the area, it is found that the IP anomalies with high polarization, medium resistance and low resistance have a good spatial correspondence with the conjectured concealed copper orebody, which shows that the mining area has a good deep prospecting potential for further exploration. The detailed investigation work provides the basis.
By analyzing the ore body characteristics of Huitongshan Copper Mine and the deep prospecting results, it is found that the orebody tends to dip southward and eastward, and the surface is covered by a large area of Quaternary.The physical properties of the rock(ore) in the survey area are measured,It is found that the ore in the area has the electrical characteristics of "high polarization, medium resistance", which are obviously different from the electrical properties of the surrounding rock. Therefore, the induced polarization method is used to deep ground. Spherical information detection. On the basis of geological mapping of 1:10,000 mining area, two methods of intermediate gradient induced polarization measure,electrical sounding of induced polarization are used to carry out metal mineral exploration, and two obvious IP anomalies are delineated. Combining with geological characteristics and borehole data in the area, it is found that the IP anomalies with high polarization, medium resistance and low resistance have a good spatial correspondence with the conjectured concealed copper orebody, which shows that the mining area has a good deep prospecting potential for further exploration. The detailed investigation work provides the basis.
引文
[1]邱林林,李雪涛.甘肃省瓜州县辉铜山铜矿矿床成因及找矿潜力分析[J].世界有色金属,2018,82-83.
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[4]沈思宏,聂凤军,陈文.甘肃辉铜山铜矿燕山期钾长花岗岩的发现及其地质意义[J].矿床地质,2003,2(2):185.
[5]徐明钻,朱立新.北山地区矽卡岩型铜矿元素表生活动性规律——以辉铜山铜矿为例[J].吉林大学学报(地球科学版),2011,41(4):1056-1057.
[6]李祥才,张志伟,敖颖锋.激电法在辽宁柏杖子金矿勘查中的作用义[J].地质与勘探,2009,45(2):74-79.
[7]程红军.综合物探方法在新疆喇嘛苏铜矿外围勘查中的作用及意义[J].地质找矿论丛,2017,201(4):635-637.
[8]国土资源部.时间域激发极化法技术规定[M].北京:国土资源部出版社,2016,24-26.
[9]李金铭.激发极化法方法技术指南[M].北京:地质出版社,2007,1-2.
(1)西北冶金地质勘探公司703队.甘肃省安西县辉铜山地区地质普查与勘探总结报告,1971
[2]刘雪亚.中国西部北山造山带的大地构造及其演化[J].地学研究,1995,28:37.
[3]左朝国,刘义科.甘新蒙北山地区构造格局及演化[J].甘肃地质学报,2003,12(1)1-3.
[4]沈思宏,聂凤军,陈文.甘肃辉铜山铜矿燕山期钾长花岗岩的发现及其地质意义[J].矿床地质,2003,2(2):185.
[5]徐明钻,朱立新.北山地区矽卡岩型铜矿元素表生活动性规律——以辉铜山铜矿为例[J].吉林大学学报(地球科学版),2011,41(4):1056-1057.
[6]李祥才,张志伟,敖颖锋.激电法在辽宁柏杖子金矿勘查中的作用义[J].地质与勘探,2009,45(2):74-79.
[7]程红军.综合物探方法在新疆喇嘛苏铜矿外围勘查中的作用及意义[J].地质找矿论丛,2017,201(4):635-637.
[8]国土资源部.时间域激发极化法技术规定[M].北京:国土资源部出版社,2016,24-26.
[9]李金铭.激发极化法方法技术指南[M].北京:地质出版社,2007,1-2.
(1)西北冶金地质勘探公司703队.甘肃省安西县辉铜山地区地质普查与勘探总结报告,1971
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