可控源与天然源音频大地电磁法对比应用研究:以云南北衙铁金矿为例
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摘要
北衙铁金矿具有我国西南地区最大的金矿储量,地处三江成矿带,且拥有巨大的深部勘探潜力.通常地,常规直流电法很难在了解深部地质构造和勘探深度上满足深部找矿的需求,而可控源大地电磁测深(CSAMT)和天然源大地电磁测深(AMT)的成果能反映深部构造、地层及含矿岩系特征,预测隐伏矿体的走向.本文以北衙铁金矿为实例,结合已知地质和钻孔资料,对比研究两种方法的应用效果及优缺点,证实了北衙铁金隐伏矿床的走向,为外围远景区找矿和合理优化勘探工程布置提供了依据.
The iron-gold mine in Beiya not only has the largest gold reserves in the southwest of China,located in the Sanjing metallogenic belt,but also has the huge prospecting potential.Normally,it is difficult to know the deep geological structure and meet the needs of deep ore prospecting exploration by using conventional DC electric method.Then the results of CSAMT and AMT methods can reflect the deep tectonic characteristics,the stratum and ore-bearing rock series,meanwhile predict the concealed ore body.This paper took iron-gold mine in Beiya as an example,combined with the known geological data and drilling data,compared to study the application effect of the two methods and the advantages and disadvantages. We confirmed the concealed ore body and provided the basis for drilling engineering in prospecting areas.
The iron-gold mine in Beiya not only has the largest gold reserves in the southwest of China,located in the Sanjing metallogenic belt,but also has the huge prospecting potential.Normally,it is difficult to know the deep geological structure and meet the needs of deep ore prospecting exploration by using conventional DC electric method.Then the results of CSAMT and AMT methods can reflect the deep tectonic characteristics,the stratum and ore-bearing rock series,meanwhile predict the concealed ore body.This paper took iron-gold mine in Beiya as an example,combined with the known geological data and drilling data,compared to study the application effect of the two methods and the advantages and disadvantages. We confirmed the concealed ore body and provided the basis for drilling engineering in prospecting areas.
引文
Bartel L C,Jacobson R D.1987.Results of a controlled sourceaudiofrequency magnetotelluric survey at the Puhimau thermal\sarea,Kilauea Volcano,Hawaii[J].Geophysics,52(5):665-677.
Chen Q K,Xi Z Z.2005.Study of data processing procedure of eh4electromagnetic imaging system[J].Non-Ferrous Mining and\sMetallurgy(in Chinese),21(5):7-9.
Chen W J,Liu H T.2009.Integrated geophysical exploration for\sconcealed Ore beneath cover in the Zhaojiaweizi area,Inner\sMongolia,northern China[J].Progress in Geophysics(in\sChinese),24(1):364-368.
Cheng J M.2008.Application of CSMAT method in hidden\scoalmine[J].Progress in Geophysics(in Chinese),23(4):1269-1272.
Dai Q W,Hou Z C,Chai X C,et al.2013.Application of transient\selectromagnetic method and EH-4to investigation of mined-out\sareas of molybdenum deposits[J].Progress in Geophysics(in\sChinese),28(3):1541-1546,doi:10.6038/pg20130350.
He W Y,Mo X X,Yu X H,et al.2012.Genetic types and the\srelationship between alkalirich intrusion and mineralization of\sBeiyagold-polymetallic ore field,western Yunnan Province,China[J].Acta Petrological Sinica(in Chinese),28(5):1401-1412.
He Z H,Zhou Y M,He W Y,et al.2013.Genetic types and\smetallogenic regularity of Beiya superlarge gold-polymetallic\sdeposit,northwestern Yunnan[J].Mineral Deposits(in\sChinese),32(2):244-258.
Li B,Wang X Q,Ding Y H,et al.2013.Application study of\sCSAMT method to investigation and e-valuation project of\sBauxite[J].Journal of Engineering Geology(in Chinese),21(6):987-944.
Liang T,Yuan W,Lu R,et al.2012.EH4Magnetotelluric section\sfrom Guxian Reservir to Quanbaoshan Mountain,southwest\sLuoning County,western Henan Province,and its implications\sfor deep ore prospecting[J].Progress in Geophysics(in\sChinese),27(5):2175-2182,doi:10.6038/j.issn.1004-2903.2012.05.044.
Lin W.2009.Transition region electromagnetic field characteristics\sof the CSAMT method[J].Geophysical and Geochemical\sExploration(in Chinese),33(2):148-150.
Liu H T,Yang X Y,Yu L M,et al.2004.A case study in finding\sconcealed ores by using geophysical exploration methods in\scombination of VIF-EM,EH4and CSAMT[J].Progress in\sGeophysics(in Chinese),19(2):276-285.
Lu H F,Wang Z F,Wang H,et al.2013.The application of\sCSAMT and GS on prospecting and evaluation in Baishan\smolybdenum deposit,Hami,Xining[J].Progress in\sGeophysics(in Chinese),28(3):1547-1556,doi:10.6038/pg20130351.
Shen P,Shen Y C,Liu T B,et al.2007.Application of stratagem\sEH4system to prediction of hidden ore bodies[J].Mineral\sDeposits(in Chinese),26(1):70-78.
Shi B.2012.Research and Application of CSAMT in Deep Mineral\sExploration(in Chinese)[D].Changchun:Jilin University,1-57.
Tan R J,Hu R L,Xu W J,et al.2007.CSAMT exploration and\sgeological interpretation of Perdue tectonic structures of\sLongpan deformation slope in Jinsha River[J].Progress in\sGeophysics(in Chinese),22(1):283-288,doi:10.3969/j.issn.1004-2903.2007.01.042.
Tang J T,He J S.2005.Controlled Source Audi frequency\sMagnetotellurics and Its Application(in Chinese)[M].Changsha:Central South University Press.
Tong T G,Liu C M,He J S.2009.Numerical simulation andapplication discussion of the CSAMT full-zone resistivity\smethod[J].Progress in Geophysics(in Chinese),24(5):1855-1860.
Wang Q,Wan H P,Wang W W,et al.2012.The application of\sintegrated geophysical Exploration in Bauxite[J].Progress in\sGeophysics(in Chinese),27(2):709-714,doi:10.6038/j.issn.1004-2903.2012.02.037.
Wang X B,Chen J C,Guo Q S,et al.2013.Research of the\sCSAMT exploration mode and experiment for the coalbed\smethane enrichment region in the north Qinshui basin[J].Chinese Journal of Geophysics(in Chinese),56(12):4310-4323.
Xiao C Y,Huang Q T,Zhang S J,et al.2011.Application of EH4electromagnetic image system in mineral resource explorationAn example from the Huangjindong gold ore deposit[J].Geotectonica et Metallogenia(in Chinese),35(2):242-248.
Xu X W,Cai X P,Zhang B L,et al.2007.Genetic types and\sframework model of Beiyagold ore district in western Yunnan[J].Mineral Deposits(in Chinese),26(3):249-264.
Yang J,Wang X B,Wang Y H,et al.2014.The application of\sintegrated geophysical methods of magnetic survey and AMT to\sthe exploration of the Beiyagold deposit[J].Geology in China(in Chinese),41(2):602-610.
Yu C M.1998.The Application of CSAMT method in looking for\shidden Gold Mine[J].Acta Geophysica Sinica(in Chinese),41(1):133-138.
Zhuo Q H,Zhu W M,Yang J Q,et al.2013.On characteristics of\salkali rich porphyry with relationship of mineralization in Beiya\sof Yunnan[J].Journal of Geology(in Chinese),37(1):102-109.
陈庆凯,席振铢.2005.EH4电磁成像系统的数据处理过程研究[J].有色矿冶,21(5):7-9.
陈伟军,刘红涛.2009.综合地球物理方法在隐伏矿床勘查中的应用—以内蒙赵家围子银铅锌多金属矿床为例[J].地球物理学进展,24(1):364-368.
成江明.2008.可控源音频大地电磁法在隐伏煤矿区的应用[J].地球物理学进展,23(4):1269-1272.
戴前伟,侯智超,柴新朝,等.2013.瞬变电磁法及EH-4在钼矿采空区探测中的应用[J].地球物理学进展,28(3):1541-1546,doi:10.6038/pg20130350.
和文言,莫宣学,喻学惠,等.2012.滇西北衙多金属矿田矿床成因类型及其与富碱斑岩关系初探[J].岩石学报,28(5):1401-1412.
和中华,周云满,和文言,等.2013.滇西北衙超大型金多金属矿床成因类型及成矿规律[J].矿产地质,32(2):244-258.
李冰,王秀全,丁云河,等.2013.CSAMT法在铝土矿调查评价项目中的应用研究[J].工程地质学报,21(6):987-944.
梁涛,袁稳,卢仁等.2012.豫西洛宁故县水库-全包山EH4测深断面及深部找矿启示[J].地球物理学进展,27(5):2175-2182,doi:10.6038/j.issn.1004-2903.2012.05.044.
林威.2009.CSAMT法过渡区电磁场的特征[J].物探与化探,33(2):148-150.
刘红涛,杨秀瑛,于吕明,等.2004.用VLF、EH4和CSAMT方法寻找隐伏矿-以赤峰柴胡栏子金矿床为例[J].地球物理学进展,19(2):276-285.
卢鸿飞,王志福,王恒,等.2013.CSAMT测深和重力测量技术在哈密白山钼矿深部找矿和远景评价中的应用[J].地球物理学进展,28(3):1547-1556,doi:10.6038/pg20130351.
申萍,沈远超,刘铁兵,等.2007.EH4连续电导率成像仪在隐伏矿体定位预测中的应用研究[J].矿床地质,26(1):70-78.
时彬.2012.CSAMT在深部矿产勘查中的研究与应用[D].长春:吉林大学,1-57.
谭儒蛟,胡瑞林,徐文杰,等.2007.金沙江龙蟠变形体隐伏构造CSAMT探测与解译[J].地球物理学进展,22(1):283-288,doi:10.3969/j.issn.1004-2903.2007.01.042.
汤井田,何继善.2005.可控源音频大地电磁法及其应用[M].长沙:中南大学出版社.王桥,万汉平,王闻文等.2012.综合物探方法在铝土矿勘查中的应用[J].地球物理学进展,27(2):709-714,doi:10.6038/j.issn.1004-2903.2012.02.037.
王绪本,陈进超,郭全仕,等.2013.沁水盆地北部煤层气富集区CSAMT勘探试验研究[J].地球物理学报,56(12):4310-4323.
肖朝阳,黄强太,张绍阶,等.2011.EH4电磁成像系统在金矿勘探中的应用一以黄金洞金矿为例[J].大地构造与成矿学,35(2):242-248.
徐兴旺,蔡新平,张宝林,等.2007.滇西北衙金矿矿床类型与结构模型[J].矿床地质,26(3):249-264.
杨剑,王绪本,王永华,等.2014.电、磁综合方法在云南北衙铁金矿勘查中的应用[J].中国地质,41(2):602-610.
于昌明.1998.CSAMT方法在寻找隐伏金矿中的应用[J].地球物理学报,41(1):133-138.
左琼华,朱婉明,杨加庆,等.2013.云南北衙富碱斑岩体特征与成矿关系[J].地质学刊,37(1):102-109.
佟铁钢,刘春明,何继善.2009.CSAMT全区电阻率法数值模拟及应用探讨[J].地球物理学进展,24(5):1855-1860.
Chen Q K,Xi Z Z.2005.Study of data processing procedure of eh4electromagnetic imaging system[J].Non-Ferrous Mining and\sMetallurgy(in Chinese),21(5):7-9.
Chen W J,Liu H T.2009.Integrated geophysical exploration for\sconcealed Ore beneath cover in the Zhaojiaweizi area,Inner\sMongolia,northern China[J].Progress in Geophysics(in\sChinese),24(1):364-368.
Cheng J M.2008.Application of CSMAT method in hidden\scoalmine[J].Progress in Geophysics(in Chinese),23(4):1269-1272.
Dai Q W,Hou Z C,Chai X C,et al.2013.Application of transient\selectromagnetic method and EH-4to investigation of mined-out\sareas of molybdenum deposits[J].Progress in Geophysics(in\sChinese),28(3):1541-1546,doi:10.6038/pg20130350.
He W Y,Mo X X,Yu X H,et al.2012.Genetic types and the\srelationship between alkalirich intrusion and mineralization of\sBeiyagold-polymetallic ore field,western Yunnan Province,China[J].Acta Petrological Sinica(in Chinese),28(5):1401-1412.
He Z H,Zhou Y M,He W Y,et al.2013.Genetic types and\smetallogenic regularity of Beiya superlarge gold-polymetallic\sdeposit,northwestern Yunnan[J].Mineral Deposits(in\sChinese),32(2):244-258.
Li B,Wang X Q,Ding Y H,et al.2013.Application study of\sCSAMT method to investigation and e-valuation project of\sBauxite[J].Journal of Engineering Geology(in Chinese),21(6):987-944.
Liang T,Yuan W,Lu R,et al.2012.EH4Magnetotelluric section\sfrom Guxian Reservir to Quanbaoshan Mountain,southwest\sLuoning County,western Henan Province,and its implications\sfor deep ore prospecting[J].Progress in Geophysics(in\sChinese),27(5):2175-2182,doi:10.6038/j.issn.1004-2903.2012.05.044.
Lin W.2009.Transition region electromagnetic field characteristics\sof the CSAMT method[J].Geophysical and Geochemical\sExploration(in Chinese),33(2):148-150.
Liu H T,Yang X Y,Yu L M,et al.2004.A case study in finding\sconcealed ores by using geophysical exploration methods in\scombination of VIF-EM,EH4and CSAMT[J].Progress in\sGeophysics(in Chinese),19(2):276-285.
Lu H F,Wang Z F,Wang H,et al.2013.The application of\sCSAMT and GS on prospecting and evaluation in Baishan\smolybdenum deposit,Hami,Xining[J].Progress in\sGeophysics(in Chinese),28(3):1547-1556,doi:10.6038/pg20130351.
Shen P,Shen Y C,Liu T B,et al.2007.Application of stratagem\sEH4system to prediction of hidden ore bodies[J].Mineral\sDeposits(in Chinese),26(1):70-78.
Shi B.2012.Research and Application of CSAMT in Deep Mineral\sExploration(in Chinese)[D].Changchun:Jilin University,1-57.
Tan R J,Hu R L,Xu W J,et al.2007.CSAMT exploration and\sgeological interpretation of Perdue tectonic structures of\sLongpan deformation slope in Jinsha River[J].Progress in\sGeophysics(in Chinese),22(1):283-288,doi:10.3969/j.issn.1004-2903.2007.01.042.
Tang J T,He J S.2005.Controlled Source Audi frequency\sMagnetotellurics and Its Application(in Chinese)[M].Changsha:Central South University Press.
Tong T G,Liu C M,He J S.2009.Numerical simulation andapplication discussion of the CSAMT full-zone resistivity\smethod[J].Progress in Geophysics(in Chinese),24(5):1855-1860.
Wang Q,Wan H P,Wang W W,et al.2012.The application of\sintegrated geophysical Exploration in Bauxite[J].Progress in\sGeophysics(in Chinese),27(2):709-714,doi:10.6038/j.issn.1004-2903.2012.02.037.
Wang X B,Chen J C,Guo Q S,et al.2013.Research of the\sCSAMT exploration mode and experiment for the coalbed\smethane enrichment region in the north Qinshui basin[J].Chinese Journal of Geophysics(in Chinese),56(12):4310-4323.
Xiao C Y,Huang Q T,Zhang S J,et al.2011.Application of EH4electromagnetic image system in mineral resource explorationAn example from the Huangjindong gold ore deposit[J].Geotectonica et Metallogenia(in Chinese),35(2):242-248.
Xu X W,Cai X P,Zhang B L,et al.2007.Genetic types and\sframework model of Beiyagold ore district in western Yunnan[J].Mineral Deposits(in Chinese),26(3):249-264.
Yang J,Wang X B,Wang Y H,et al.2014.The application of\sintegrated geophysical methods of magnetic survey and AMT to\sthe exploration of the Beiyagold deposit[J].Geology in China(in Chinese),41(2):602-610.
Yu C M.1998.The Application of CSAMT method in looking for\shidden Gold Mine[J].Acta Geophysica Sinica(in Chinese),41(1):133-138.
Zhuo Q H,Zhu W M,Yang J Q,et al.2013.On characteristics of\salkali rich porphyry with relationship of mineralization in Beiya\sof Yunnan[J].Journal of Geology(in Chinese),37(1):102-109.
陈庆凯,席振铢.2005.EH4电磁成像系统的数据处理过程研究[J].有色矿冶,21(5):7-9.
陈伟军,刘红涛.2009.综合地球物理方法在隐伏矿床勘查中的应用—以内蒙赵家围子银铅锌多金属矿床为例[J].地球物理学进展,24(1):364-368.
成江明.2008.可控源音频大地电磁法在隐伏煤矿区的应用[J].地球物理学进展,23(4):1269-1272.
戴前伟,侯智超,柴新朝,等.2013.瞬变电磁法及EH-4在钼矿采空区探测中的应用[J].地球物理学进展,28(3):1541-1546,doi:10.6038/pg20130350.
和文言,莫宣学,喻学惠,等.2012.滇西北衙多金属矿田矿床成因类型及其与富碱斑岩关系初探[J].岩石学报,28(5):1401-1412.
和中华,周云满,和文言,等.2013.滇西北衙超大型金多金属矿床成因类型及成矿规律[J].矿产地质,32(2):244-258.
李冰,王秀全,丁云河,等.2013.CSAMT法在铝土矿调查评价项目中的应用研究[J].工程地质学报,21(6):987-944.
梁涛,袁稳,卢仁等.2012.豫西洛宁故县水库-全包山EH4测深断面及深部找矿启示[J].地球物理学进展,27(5):2175-2182,doi:10.6038/j.issn.1004-2903.2012.05.044.
林威.2009.CSAMT法过渡区电磁场的特征[J].物探与化探,33(2):148-150.
刘红涛,杨秀瑛,于吕明,等.2004.用VLF、EH4和CSAMT方法寻找隐伏矿-以赤峰柴胡栏子金矿床为例[J].地球物理学进展,19(2):276-285.
卢鸿飞,王志福,王恒,等.2013.CSAMT测深和重力测量技术在哈密白山钼矿深部找矿和远景评价中的应用[J].地球物理学进展,28(3):1547-1556,doi:10.6038/pg20130351.
申萍,沈远超,刘铁兵,等.2007.EH4连续电导率成像仪在隐伏矿体定位预测中的应用研究[J].矿床地质,26(1):70-78.
时彬.2012.CSAMT在深部矿产勘查中的研究与应用[D].长春:吉林大学,1-57.
谭儒蛟,胡瑞林,徐文杰,等.2007.金沙江龙蟠变形体隐伏构造CSAMT探测与解译[J].地球物理学进展,22(1):283-288,doi:10.3969/j.issn.1004-2903.2007.01.042.
汤井田,何继善.2005.可控源音频大地电磁法及其应用[M].长沙:中南大学出版社.王桥,万汉平,王闻文等.2012.综合物探方法在铝土矿勘查中的应用[J].地球物理学进展,27(2):709-714,doi:10.6038/j.issn.1004-2903.2012.02.037.
王绪本,陈进超,郭全仕,等.2013.沁水盆地北部煤层气富集区CSAMT勘探试验研究[J].地球物理学报,56(12):4310-4323.
肖朝阳,黄强太,张绍阶,等.2011.EH4电磁成像系统在金矿勘探中的应用一以黄金洞金矿为例[J].大地构造与成矿学,35(2):242-248.
徐兴旺,蔡新平,张宝林,等.2007.滇西北衙金矿矿床类型与结构模型[J].矿床地质,26(3):249-264.
杨剑,王绪本,王永华,等.2014.电、磁综合方法在云南北衙铁金矿勘查中的应用[J].中国地质,41(2):602-610.
于昌明.1998.CSAMT方法在寻找隐伏金矿中的应用[J].地球物理学报,41(1):133-138.
左琼华,朱婉明,杨加庆,等.2013.云南北衙富碱斑岩体特征与成矿关系[J].地质学刊,37(1):102-109.
佟铁钢,刘春明,何继善.2009.CSAMT全区电阻率法数值模拟及应用探讨[J].地球物理学进展,24(5):1855-1860.