文章关键词: 动力 变质带 金矿 分布 地质特征
文章快照: REA，GUANGDONGPROVINCELiUGuanglongandLiangHanqun(No．19GeologicalPartyofBureauofGeologyandMineralResourcesofGunngdongProvinee．Zhaoqlng1AbstraOtTheLanyuan--JiangtundynamometamofphjcbeltislocatedinthenortheastcontinuationoftheGuangning--LuodingfracturezoneonthesoutheastflankoftheGuangdong--GnangxiupwarpingregionandthenorthWestSideoftheWuchuan--Shihujfoldzone．ItiSdistributedlar—gelYintheGuangninggranitlCcomplexandthesedimentary—metamorphicfOCksofSiniancFormation．Thedynamemetamorphlcbettwhichhasacompresso--shearnatureiSmorethan120kmjn1engthand1—2kminbreadth，withstrlkegenerallyN4o。EandlocallYNTO。E．Secondaryor1ate．．stagefaultsarewell—．developedinthedynamo．．metamorphicbeltasaconsequenceofrepeatedtectonicactlvity．ItiSindeedawidecompresso～crushedzonecomprlsedofcrushedgranlteandmylozltinedandschjStosizedrockSshowingsha11OW—seatedbritt1edefor—marioncharacterlstlCS．Aboutevery25—3OkmalongthisNE—trendlngzone，thereoccursacompoundingpositionwiththeE—Wtrendingstrut—turewheresecondaryorlate—stagefaultsareparticularlydeveloped．Sincethesecondaryorlate．．stagefaultsarethechiefore．．control1lugsiructureinthiSurea，thecompoundingposltionsmentionedaboveareoftenthe1ocatlonswherenlobium—tantalumandgoldmineralizationsareconcentrated．ThesepositionsareevidentlYequal1Yspacedatintervalofabout25—3Okm．Moreover，theniobium—tantalumandgolddepositsformtwoNE—trendingbeltssidebyside，withtheniobium—tantalumbeltonthenorthwestandthegoldbeltOnthesoutheast．TheintimateRSSOCiationofthesetwobeltsi11Spaceseamstodemonstratethatt

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