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1、分类号密级中国地质大学(北京)本科毕业论文题目个旧东西矿区成矿规律对比分析英文题目MetallogenicregularityofcomparativeanalysisinGejiuwest-eastminingarea学生姓名徐章辉院(系)地球科学与资源学院专业资源勘查工程(固体矿产)学号1001103320指导教师王功文职称副教授2014年5月摘要个旧锡铜多金属矿区被个旧断裂分为东区和西区,东区锡多金属矿开采程度高,矿田分布多;西区多年来仅发现一些中小型锡铜矿床,多年来,在个旧锡矿研究工作多注重于花岗岩成矿理论,个旧锡铜多金属矿床
2、主要受燕山中晚期花岗岩及其有关构造控制,成矿时间集中。近几年来,随着矿区内越来越多地开采深部硫化物型矿床,表明个旧锡铜多金属矿床的成因是复杂的,用单一矿源和简单的花岗岩成因观点不足以对其进行合理地解释。本文在前人研究成果的基础上,结合实地调研以及资料收集进行了区域和矿区地质背景分析,安尼期玄武岩犹如一个巨大的矿源层,为成矿过程提供了重要的成矿物质,燕山期花岗岩侵入活动带来的热力和热液作用下,使这些矿质得到萃取活化并迁移到一定部位成矿。通过对东西矿区地层、构造、岩浆岩侵位特征进行对比分析,对比东西区成矿规律,个旧东区的矿床地质研究程度较
3、高,结合东西矿床地质研究成果,分析西区的矿床地质特点与成矿规律,为西区找矿提供依据。关键词:玄武岩;花岗岩;锡铜多金属矿床;成矿模式ABSTRACTGejiutincopperpolymetallicdepositisanoldfractureisdividedintoeasternandWestern,Thedegreeofmultimetaloreminingdistrictoftin,Fielddistribution;Westovertheyearsonlytofindsomesmalltincopperdeposit,ove
4、rtheyears;foryears,InGejiuTinresearchworkfocusedongranitemetallogenictheory,GejiutincopperpolymetallicdepositismainlycontrolledbythelateYanshangraniteanditsrelatedstructure,Concentratedmineralizationtime.Inrecentyears,Withmoreandmoredeepsulfideminingwithintheminingareat
5、odeposit,ThatcausestheGejiutincopperpolymetallicdepositiscomplex,Withasinglesourceandsimplegranitegenesisisnotenoughtocarryonthereasonableexplanation.Inthispaper,onthebasisofpreviousresearchresults,Basedontheinvestigationanddatacollectionoftheregionandthegeologicalbackg
6、roundanalysis,Anisianbasaltislikeagiantoresourcelayer,Providetheore-formingmaterialisanimportantmetallogenicprocess,ThethermalandhydrothermalactionYanshanperiodgraniteintrusiveactivitiesbringdown,Themineralwasactivatedandmigratetoacertainpartofmineralization.Throughcomp
7、aringandanalyzingtheformation,magmatite,somethingtectonicemplacementcharacteristics,MetallogenicregularitythingsDistrictcomparison,TheeastareaofGejiuoredepositgeologyresearchhigherdegree,Combinedwiththegeologicalresearchresults.Analysisofthegeologicalcharacteristicsofor
8、edepositsandmetallogenicregularityoftheWest,ToprovidethebasisforWesternExploration.Keywords:basalt;granite;Tin