西藏冈底斯成矿带矿产资源远景评价与展望

311()Vol.31No.120042JOURNALOFCHENGDUUNIVERSITYOFTECHNOLOGY(Science&TechnologyEdition)Feb.2004[]167129727(2004)0120022206[]2002210211[](40272047);(2002CB412609);(199910200246)[](1965-),,,,.(E2mail:[e-mail])(,610082)[],,,;,5,,2[];;;;[]P617[]A,,,,,1,-,,22,2000km2[1],[2],83%[3],,2[4],[5],A,,13020Ma[1],,,;,[6],[7]2,,(),,15106t[8]:a.,22,2b.(22)(2),,,-c.,;d.,-,22,,,;,;2(),,(1),:2.1(1984)(1991)[9],[10],(),1()Fig.1DistributionmapoforedepositsintheGangdisemetallogenicbelt,Tibet321:,[11],[12]()(),-,240km,2030km,:,,,,()(),CuMo,Au,Ag,PbZn20012002,400m()2.22,,22.2.1,,,,,,,,,,2.2.2,,,,,,,,,2.32,,,22.3.1,,,(1998)[13];(2001),[14],,,2.3.2Ag,Pb,Zn,,,,AgPb,ZnCu,2.4,,,42()31,,[15]2.5,,2(),,;,3,(),,3Ì,5(2)3.1-,,90km,2Fig.2DivisionofmetallogenicbeltsandprospectingregionsinGangdise,TibetÌ1.-;Ì2.-;Ì3.-;A.-;B.-;C.-;D.;E.-40km-,-,;(),(),(),Cu2Mo2Ag2Pb2Zn2Cd2Bi2W2Au,CuMo,-,3.2-,,60km,40km--,-,-,(),Cu,Mo,Pb,ZnAg,,,,,(),3.3--,1500km222-,-AuCu,W,Mo,Ag,Pb,Zn,As,BiCd,,521:,,2,2,(),3.4,,50km,60km-,-2,,150,Cu2Mo2Au2W2Pb2Zn2Ag2Bi2Cd,,(),,3.5,,100km,50km,2,-,-,,,150,Cu,Pb,ZnAg,(),4,,,-,()20,:,(),,,23106t200106t-240km,2030km,15106t;-100km,3106t;-5106t,,,,--,,,,,,35,,,,,62()31[][1].[M].:,1993.[2],,,.[M].:,1990.[3].[J].,2002,21(7):370-376.[4],,,.[M].:,1997.[5],,,.[J].,2000,20(4):38-46.[6],,.[M].:,1999.15-29.[7],,.[A].[C].:,1999.545-548.[8],,,.[J].,2002,21(1):35-40.[9],.()[M].:,1984.[10],,,.(20)[M].:,1991.44-123.[11],.():?[J].,2001,20(4):355-366.[12],.[J].,2002,21():144-147.[13],.-[M].:,1998.[14],,,.:[J].,2001,21(4):40-48.[15],,,.[M].:,1993.70-85.EvaluationandprospectingvalueofmineralresourcesinGangdisemetallogenicbelt,Tibet,ChinaLIGuang2ming,PANGui2tang,WANGGao2ming,HUANGZi2ying,GAODa2fa(ChengduInstituteofGeology&MineralResources,Chengdu,China)Abstract:EventhoughtheGangdisemetallogenicbeltisoneoftheregionsstudiedinmostdegreesinwesternChina,butthemetallogenicconditionsinGangdisearehopeful.Inthispaper,basedontheupdatedfruitsofgeologicsurveyandprimaryanalysisofthemetallogenicbackgroundandmetallogenicconditionsintheGangdisemetallogenicbelt,accordingtomineralizingprocess,theauthorsdividethemaindeposittypesinGangdiseascopper,iron,gold,silverpolymetallicoredepositsconcernedwithporphyry,island2arcvolcanicrocks,intermediate2acidintrusiverocksandophiolitemlangeandlocatefiveprospectingregionsintheGangdisemetallogenicbelt,accordingtomineralresourcesprospectingpotential.Theauthorspointoutthatthecopperore,high2gradeironore,silver2bearingpolymetallicoreandgoldorearesuperiortypesintheGangdisemetallogenicbelt,andthatthemostimportantdeposittypesintheGangdisemetallogenicbeltareporphyrycopperoreandvolcanicrockcopperore.TheauthorsconfirmthattheGangdisemetallogenicbeltisofgiganticprospectingpotentialincopperore,high2gradeironore,silver2bearingpolymetallicore.Keywords:Gangdise;metallogenicbelt;mineralresourcesprospecting;evaluation;prospectivevalue721: