| 德尔尼钴铜矿床物探勘查方法优选 |
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| 引用本文： | 王凯,陈向阳,王育习,吕学成.德尔尼钴铜矿床物探勘查方法优选[J].甘肃地质学报,2007,16(3):79-85. |
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| 作者姓名： | 王凯 陈向阳 王育习 吕学成 |
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| 作者单位： | 西安地质矿产研究所 陕西西安710054(王凯，陈向阳，王育习)，西北有色地质勘查局物化探总队 陕西西安710068(吕学成) |
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| 摘 要： | 德尔尼钴铜矿床主要矿石为致密块状含铜黄铁矿,上世纪60年代通过在矿区和外围投入11∶0000面积性自电、磁法测网,圈定自电异常28处,其中确定为矿致异常的14处,自电方法在德尔尼铜钴矿勘探初期发挥了重要作用。但利用这种找矿模式,从上世纪70年代至今,矿区外围找矿尚无突破性进展,这就需要对勘查方法进行比较与优选。本文通过对前人在矿区进行的物探方法加以比较,设计地电模型,进行瞬变电磁方法模拟计算,分析用瞬变电磁法探测矿体的有效性并在已知矿区进行的瞬变电磁剖面试验中获得成功,试验方法效果好,可以用于进一步外围找矿。
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| 关 键 词： | 物探方法优选 钴铜矿 激发极化 瞬变电磁 |
| 文章编号： | 1004-4116（2007）03-0079-0007 |
| 收稿时间： | 2007-04-24 |
OPTIMUM METHOD OF GEOPHYSICAL EXPLORATION FOR
DE'ERNI COBALT- COPPER ORE DEPOSIT |
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| WANG Kai,CHEN Xiang-yang,WANG yu-xi and LU Xue-cheng.OPTIMUM METHOD OF GEOPHYSICAL EXPLORATION FOR
DE''ERNI COBALT- COPPER ORE DEPOSIT[J].Acta Geologica Gansu,2007,16(3):79-85. |
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| Authors: | WANG Kai CHEN Xiang-yang WANG yu-xi and LU Xue-cheng |
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| Institution: | WANG Kai1,CHEN Xiang-yang1,WANG yu-xi1,LU Xue-cheng2(1.Xi’an Institute of Geology and Mineral Resources,Xi’an 710054;2.Northwestern Nonferrous Metal Geology Exploration Bureau Geochemistry and Physical Geography Center,Xi’an 710068,China) |
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| Abstract: | The massive copper-bearing pyrite ore is dominant in Derny copper-cobalt ore deposit.28 self-potential abnormities were delineated,of which 14 abnormities were determined to be led by orebodies,on the base of self-potential and magnetic prospecting through out the mine area in 1960's,we can say that self-potential method played a key role in the preliminary exploration.But since 1970's,this method has being used to explore orebody throughout known mine area and no breakthroughs have been achieved nearby the main mineral.It's necessary to seek some effective geophysical methods to solve the difficulty.By numerical calculation and field test,the availability of TEM on probing underground orebody has been discussed.While crossly testing on known ore zones with TEM,we found that strong abnormity was shown upon massive copper-bearing pyrite orebodies,and the low resistivity is distinct on the cross section through inversion.Based on these achievements,we think that TEM is a useful method to search for orebody in the vicinity of known ore mines. |
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| Keywords: | induced polarization transient electromagnetics copper-cobalt ore |
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