搜索
毕业设计山西省小道沟银锰矿地质特征及找矿标志探讨DiscussiononGeologyandMineralizingtracesofxiaodaogouAg-MndepositsinShanxiProvince杨毓红I长春工程学院摘要小道沟银锰矿矿区位于燕山断块西部,灵蔚块坳西侧与五台山块隆交接部之唐河断裂带上，区内地层较齐全，构造发育，火山活动强烈，主要表现为燕山期晚侏罗世具多期次活动的火山喷出岩，构成了区内火山岩地层的主体。小道沟银、锰多金属矿床是与燕山晚期酸性次火山岩有成因联系的中低温热液矿床;长城系高于庄组含锰白云岩为锰矿矿源层，而喷发沉积的侏罗系凝灰岩、火山角砾岩及燕山期酸性侵入岩则为银、铅、锌成矿母岩，燕山晚期中、酸性岩浆活动和后期的中、低温热液活动,使其最终富集成矿。研究区今后找矿重点应放在次火山岩体接触带上，尤其是有北西向构造叠加的部位和矽卡岩发育地段。由于地表矿体多被古采，所以今后的工作重点应放在深部矿带中。通过对该区地质特征的分析，从地层，岩性，构造，成矿规律等方面对该区找矿标志进行总结，以指导下一步找矿工作的进行.关键词：银锰矿地质特征矿床成因成矿规律找矿标志II中图法分类号：P61AbstractXiaodaogouAg-MndepositeslocatedintheTanghefaultwhichistheTransfersiteofthewestsideofLingWeiblockandWutaiblock-Uplift,thewestofYanshanblock.Thestrtaexposedintheareaisperfecttectonicsandvolcanicactivityisviolent.Thestrtaexposedintheareaisperfect,TheDepositisepithermaldeposit,Afteroxidationleaching,themanganeseenrichMnoxidedeposit,TheYanshanvolcanismisheatsource,andtheGreatWallGaoyuzhuangGroupisoresourcesofmanganesepolymetallic.AnderuptsdepositionJurassicseriestuff,thevolcanicbrecciaandyanshanperiodacidicintrusiverockforthesilver,thelead,thezincmineralizationrockInthelateryanshanperiod,theacidicmagmaticactivityandthelaterperiodcenter,thelowtemperaturehydrothermalactivity,causesitfinallytoconcentratethemineralization.IIITheresearchareanextprospectingwillbesupposedtoputontheinferiorvolcanicrockcontactbelt,inparticulartonorthwesttheSuperimpositionstructureandtheskarnsgrowthsector.Becausethesurfaceorebodyarepicked,thereforethenextworkwillbesupposedtoputwithemphasisinthedepthportionorebelt.Onthebasisofanalyzinggeologyofthedeposits,thispaperdiscussedthemineralizingregularitiesofthedepositsandproposedtheprospectingtracesforfollowingworks.Keywords：Ag-Mndeposits；Geologicalfeatures；Depositsorigin；MineralizationRegularities；Prospectingtraces目录毕业设计................................................................................................................................I摘要.................................................................................................................................IIAbstract..............................................................................................................................IIIIV目录.............................................................................................................................IV1前言....................................................................................................................................11.1目的..........................................................................................................................11.2研究区范围及地理条件..........................................................................................12地质特征............................................................................................................................42.1区域地质特征...........................................................................................................42.2矿区地质特征..........................................................................................................82.3矿体地质特征........................................................................................................123.1控矿构造及热源...................................................................................................153.2微量元素分布特征...............................................................................................153.3同位素特征...........................................................................................................163.4包裹体特征............................................................................................................193.5矿床成因总结........................................................................................................194成矿规律..........................................................................................................................204.1区域成矿规律........................................................................................................204.2区域地质构造对矿产的控制................................................................................224.3网络状断裂体系控矿作用....................................................................................234.4与相似矿床的对比................................................................................................255找矿标志..........................................................................................................................275.1.构造标志................................................................................................................275.2地层及岩性特征标志.............................................................................................28V5.3矿化蚀变标志........................................................................................................295.4地球化学标志........................................................................................................29结论......................................................................................................................................29参考文献...