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1、第13卷第3期地学前缘(中国地质大学(北京);北京大学)Vol.13No.32006年5月EarthScienceFrontiers(ChinaUniversityofGeosciences,Beijing;PekingUniversity)May2006沉积岩型铅锌矿床的成矿系统研究1,21,21,23杨永强,翟裕生,侯玉树,吕志成1.中国地质大学地质过程与成矿作用国家重点实验室,北京1000832.中国地质大学岩石圈构造、深部过程及探测技术教育部深部成矿实验室,北京1000833.中国地质调
2、查局发展研究中心,北京100037YANGYongqiang,ZHAIYusheng,HOUYushu,LZhicheng1.StateKeyLaboratoryofGeologicalProcessesandMineralResource,ChinaUniversityofGeosciences,Beijing100083,China2.KeyLaboratoryofLithosphereTectonicsandLithoprobingTechnologyofMinistryofEd
3、ucation,ChinaUniversityofGeosciences,Beijing100083,China3.DevelopmentResearchCenterofChinaGeologicalSurvey,Beijing100037,ChinaYANGYongqiang,ZHAIYusheng,HOUYushu,etal.Studyofmetallogenicsystemsofsedimenthostedleadandzincdeposits.EarthScienceFrontier
4、s,2006,13(3):200205Abstract:Sedimenthostedleadandzincdepositsareeconomicallyimportanttypesoforedeposits.Theseoredepositsaretypicallylocatedattheedgeofstablecontinentcratons.Thestudyofsedimenthostedleadandzincmetallogenicsystemfocusesontherelationship
5、betweentimespaceandoreformingevents.Inourstudy,weexaminedthelinksinthesequenceofeventsthatleadfromoreformingstages,tooreemplacementandpreservation.Thismethodcanfindouttheoredistribution,oresuppliers,genesis,oreformingmechanism,andguidethescientifico
6、researching.Sedimenthostedleadandzincdepositcanbedividedintothreetypes:1)SedimentaryExhalative(SEDEX),2)MississippeValleytype(MVT)and3)Sandstonehostedtype(SST).Inourstudyofthethreetypesofsedimenthostedmetallogenicsystems,wecametothefollowingconclus
7、ions:(1)InthecaseofSSTdeposits,porosityandpermeabilityofthehostsandstonearethemostimportantorecontrols.Forexample,theJindingPbZndepositisonlycontrolledmainlybystructureandthehighlyporouscharacterofthehostrockratherthanthesedimentarystrataperse.(2)TheHu
8、izheZnPbMVTdeposit,theoremetalswereprecipitatedfromhotsalinefluidsassociatedwithvolcanicsystems.Thegenesisisepigenesisofmixingsolutionoreformingprocess.(3)SEDEXPbZndeposits,arespatiallyassociatedwithsyngeneticfaultswhichprovid
