資源描述：
《學(xué)位論文-—云南播卡金礦地質(zhì)特征及構(gòu)造控礦規(guī)律.doc》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、云南大學(xué)本科生畢業(yè)設(shè)計(jì)(論文)題目：云南播卡金礦地質(zhì)特征及構(gòu)造控礦規(guī)律學(xué)院：資源環(huán)境與地球科學(xué)學(xué)院27摘要播卡金礦位于揚(yáng)子地臺(tái)西緣康滇地軸中南段的東北側(cè)，近南北向小江深大斷裂的西側(cè)。小江深大斷裂為礦區(qū)主干斷裂，控制著播卡礦田、礦床的分布格局。形成于晉寧期的F3、F4斷裂與小江深大斷裂平行，在礦區(qū)組成了脆-韌性剪切帶，播卡金礦的16條礦體都嚴(yán)格賦存于其中，為礦區(qū)內(nèi)的導(dǎo)礦、容礦構(gòu)造。形成于喜山期的F10～F21等近東西向斷裂為成礦后構(gòu)造，切割了南北向構(gòu)造，對(duì)礦體具有破壞作用。本文在充分收集資料并在前人研究成果的基礎(chǔ)上，通過(guò)深入細(xì)致的野外地質(zhì)調(diào)查和室內(nèi)資料整理，運(yùn)用
2、構(gòu)造地質(zhì)學(xué)、巖石學(xué)、礦床學(xué)、地球化學(xué)等理論與方法。從構(gòu)造地質(zhì)背景入手，重點(diǎn)研究地層、構(gòu)造、巖漿巖與成礦的關(guān)系。分析礦區(qū)的地質(zhì)構(gòu)造演化、礦床地質(zhì)特征以及各種控礦因素，論證構(gòu)造與成礦的時(shí)空關(guān)系，總結(jié)成礦規(guī)律并建立構(gòu)造控礦模式。研究認(rèn)為，本區(qū)金礦的形成受構(gòu)造的嚴(yán)格控制。構(gòu)造的控制作用貫穿了礦床形成的全過(guò)程，構(gòu)造裂隙為礦液運(yùn)移提供通道，同時(shí)也為礦體的堆積提供賦存空間，構(gòu)造的各種形變與轉(zhuǎn)換都與成礦流體的運(yùn)移有密切的關(guān)系。關(guān)鍵詞：播卡金礦；礦床特征；脆-韌性剪切帶；控礦構(gòu)造27AbstractBokagolddepositislocatedinthemiddle-sout
3、hKangdianaxisofitsnortheast,westmarginofYangziplatform,whichisonthenearwestsideofXiaojiangactivefault.Xiaojiangfaultisthemainfaultintheoredistrict,whichcontrolledthedistributionstyleofBokaorfieldandoredeposit.TheF3andF4faultformedduringJinningperiodareparalleltoXiaojiangactivefault.
4、Thesefaultsformedbrittle-ductileshearzoneandweremainlyconductiveandhoststructuresforthedeposits.TheF10～F21faultsofeast-weststrikewereformedduringXishanperiod,whichwerepostmetallogenicstructuresanddestructiveeffectfortheorebodies.Basedonthepredecessor'swork,theauthorgatheredgeologica
5、linformation,madefieldinvestigation,datacollectionandanalysis.Withthehelpoftheoriesofstructuralgeology,petrology,mineraldepositgeology,geochemistry,obtainsfromthegeotectonicbackground,focusedontherelationshipbetweenstratigraphy,tectonics,igneousrocksandmineralization.Analysisthetect
6、onicevolution,geologicalfeaturesandavarietyofore-controllingfactorsofmine,toverifiedtherelationsofspaceandtimeofstructureandmineralizes,summarizedtheregularityoforeformationandstructuremineralizationmodel.Accordingtothesystematicstudies,theformationofgoldstrictlycontrolledbythestruc
7、ture.Thetectonicfortheformationofthecontrolofmineralizationthroughoutthewholeprocessoforedepositformation.Thetectonicfracturesnotmerelyprovideaccessfortheorefluidmigrationbutalsoprovideoccurrencespacefortheformoforebody.KeyWords:Bokagolddeposit;Depositcharacteristics;brittle-ductile
8、shaearzone;Ore-cont
