浅层地震与MT联合技术在隐伏金属矿床定位预测中的应用——以新疆哈密图拉尔根铜镍矿区为例
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摘要
文章将浅层地震勘探与大地电磁测深(MT)应用于新疆哈密图拉尔根铜镍矿区隐伏含矿岩体的定位预测中,得到的二维反演结果比较一致,与地质事实吻合较好,并可以与已知的钻探结果对比。准确地预测了含矿地质体的形态、位置与产状,达到隐伏矿床定位预测的目的。据此认为MT和浅层地震勘探的联合运用是隐伏金属矿床定位预测的有效手段。
Both shallow seismic technology and magnetotellurics were applied to the location prognosis of concealed ore-bearing magmatic bodies in the Tulargen Cu-Ni mining area. The two-dimensional inversion results of the two methods agree with each other and can be compared with the known drilling results. The geological interpretation correctly defines the shapes, locations and attitudes of the ore-bearing geological bodies. The aim of location prognosis of the concealed deposit was eventually attained. It is thus concluded that the combination of shallow seismic technology with magnetotellurics seems to be an effective means for location prognosis of the concealed metal deposit.
Both shallow seismic technology and magnetotellurics were applied to the location prognosis of concealed ore-bearing magmatic bodies in the Tulargen Cu-Ni mining area. The two-dimensional inversion results of the two methods agree with each other and can be compared with the known drilling results. The geological interpretation correctly defines the shapes, locations and attitudes of the ore-bearing geological bodies. The aim of location prognosis of the concealed deposit was eventually attained. It is thus concluded that the combination of shallow seismic technology with magnetotellurics seems to be an effective means for location prognosis of the concealed metal deposit.
引文
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蔡新平,张宝林.1998.矿床结构模型与某些类型金矿床定位预测[J].地质科学,33(3):329～337.
陈乐寿,王光锷.1990.大地电磁测深法[M].北京:地震出版社.1～7.
梁光河,蔡新平,王杰,等.2000.浅层地震勘探在云南北衙地区隐伏金矿预测中的应用[J].黄金科学技术,8(6):1～9.
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梁光河,蔡新平,张宝林,等.2001b.浅层地震勘探方法在金矿深部预测中的应用[J].地质与勘探,37(6):29～33.
张宝林,蔡新平,梁光河,等.2002.综合地球物理方法对金矿深部找矿靶区的验证[J].地球物理学报,45(增刊):346～355.
赵国泽,汤吉,刘铁胜,等.1996.山西阳高_河北容城剖面大地电磁资料的初步解释_阻抗张量分解及其应用[J].地震地质,18(3):66～74.
CaiXPandZhangBL.1998.Texturemodeloforedepositsandpositioningprognosisofsometypesofgolddeposits[J].ScientiaGeologicalSinica,33(3):329～337(inChinesewithEnglishabstract).
ChenLSandWangG.1990.Methodofmagnetotelluricsounding[M].Beijing:SeismologicalPress.1～7(inChinese).
LiangGH,CaiXP,WangJ,etal.2000.TheapplicationofseismicexplorationmethodinpredictionofconcealedBeiyagolddepositinYunnanProvince[J].GoldSci.&Technol.,8(6):1～9(inChinesewithEnglishabstract).
LiangGHandCaiXP.2001a.TheapplicationofseismicexplorationmethodindeeppredictionofPengjiakuanggolddeposits[J].MineralResourcesandGeology,15(6):743～748(inChinesewithEnglishabstract).
LiangGH,CaiXP,ZhangBL,etal.2001b.Theapplicationofseismicexplorationmethodindeeppredictionofgolddeposits[J].Geol.&Prospect.,37(6):29～33(inChinesewithEnglishabstract).
SiripunvarapornWandEgbertG.2000.Anefficientdata_subspaceinversionmethodfor2_Dmagnetotelluricdata[J].Geophysics,65(3):791～803.
StevensKMandMcNeiceG.1998.OnthedetectionofNi_CuorehostingstructuresintheSudburyigneouscomplexusingthemagnetotelluricmethod[A].In:SocietyofExplorationGeophysicistsExpandedAbstracts(1998)[C].NewOrleans(Louisiana).751～755.
VoltiTK.1999.MagnetotelluricmeasurementsontheMethanaPeninsula(Greece):Modelingandinterpretation[J].Tectonophysics,301:111～132.
WuXH,FergusonIJandJonesAG.2002.MagnetotelluricresponseandgeoelectricstructureoftheGreatSlavelakeshearzone[J].EarthPlanet.Sci.Lett.,196:35～50.
ZhangBL,CaiXP,LiangGH,etal.2002.AcombinedgeophysicaltestonthedeepprospectingtargetoftheWulagagolddepositinHeilongjiang,China[J].ChineseJ.Geophy.,45(Supp.):346～355(inChinesewithEnglishabstract).
ZhangPandAlanK.1998.Usingmagnetotelluricformineralexploration[A].In:SocietyofExplorationGeophysicistsExpandedAbstracts(1998)[C].NewOrleans(Louisiana).776～779.
ZhaoGZ,TangJ,LiuTS,etal.1996.PreliminaryinterpretationofMTdataalongprofilefromYanggaotoRongcheng:ApplicationofdecompositionofMTimpedancetensor[J].Seismology&Geol.,18(3):66～74(inChinesewithEnglishabstract).
蔡新平.1994.金厂峪控矿构造及深部找矿研究[A].见:中国科学院黄金科技工作领导小组办公室编.中国金矿研究新进展,第1卷(下篇)[C].北京:地震出版社.457～472.
蔡新平,张宝林.1998.矿床结构模型与某些类型金矿床定位预测[J].地质科学,33(3):329～337.
陈乐寿,王光锷.1990.大地电磁测深法[M].北京:地震出版社.1～7.
梁光河,蔡新平,王杰,等.2000.浅层地震勘探在云南北衙地区隐伏金矿预测中的应用[J].黄金科学技术,8(6):1～9.
梁光河,蔡新平.2001a.地震勘探在山东蓬家夼金矿深部预测中的应用[J].矿产与地质,15(6):743～748.
梁光河,蔡新平,张宝林,等.2001b.浅层地震勘探方法在金矿深部预测中的应用[J].地质与勘探,37(6):29～33.
张宝林,蔡新平,梁光河,等.2002.综合地球物理方法对金矿深部找矿靶区的验证[J].地球物理学报,45(增刊):346～355.
赵国泽,汤吉,刘铁胜,等.1996.山西阳高_河北容城剖面大地电磁资料的初步解释_阻抗张量分解及其应用[J].地震地质,18(3):66～74.
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