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时间:2020-03-23
《初论云南易门地区凤山铜矿床刺穿构造岩-岩相分带模式.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第30卷第4期地质通报Vo1.30.NO.42011年4月GEoLoGICALBULLETINoFCHINAApr.,2011初论云南易门地区凤山铜矿床刺穿构造岩一岩相分带模式韩润生,王雷,方维萱,黄建国,冯文杰。,胡一多HANRun—sheng,WANGLei,FANGWei—xuan,HUANGJian—guo,FENGWen-jie。,HUYi—duo1.昆明理工大学/有色金属矿产地质调查中心西南地质调查所,云南昆明650093:2.有色金属矿产地质调查中心,北京100012;3.云南省地质调查局,云南昆明650
2、0001.KunmingUniversityofScienceandTechnology~South—WestInstituteofGeologicalSurveyCentre_厂0rNonferrousMetalsResources,Kunming650093,Yunnan,China;2.GeologicalSurveyofGeologicalSurveyCentreforNonferrousMetalsResources,Beijing100012,China;3.YunnanGeologicalSurveyBu
3、reau,Kunming650000,Yunnan,China摘要:以云南易门式风山铜矿床为例,应用刺穿构造岩一岩相学填图方法,解剖了控矿刺穿体的识别标志、物质组成、类型、内部结构、构造岩分带等特征。通过控矿刺穿体与非控矿刺穿体的对比研究,建立了控矿刺穿体的构造岩一岩相分带模式:从构造刺穿体一灰白色硅化白云岩一青灰色白云岩,依次出现刺穿体岩相带和构造蚀变岩相带,即火山角砾岩相带一含火山岩、板岩角砾岩相带一强铜矿化灰白色硅化白云质碎裂岩相带一铜矿化碎裂白云岩相带—弱硅化白云岩相带。其中强铜矿化硅化白云质碎裂岩相带、铜矿化
4、硅化碎裂白云岩相带是矿体的主要赋存部位。金属硫化物矿物组合与矿石构造亦呈现水平分带规律:黄铜矿+斑铜矿(少)组合,块状、网脉状构造一黄铜矿+斑铜矿+辉铜矿(少)组合,稠密浸染状、脉状构造一黄铜矿+黄铁矿+斑铜矿(少)组合,细脉状、稀疏浸染状、星点状构造。关键词:构造岩一岩相;刺穿构造岩一岩相分带模式;隐伏矿预测:易门凤山铜矿床中图分类号:P618.41:P586文献标志码:A文章编号:1671—2552(2011)04—0495—10HanRS,WangL,FangWX,HuangJG,FengWJ,HuYD.Thep
5、reliminarydiscussionondiapirstructure—lithofacieszonationmodelfortheFengshancopperdeposit,Yimenarea,Yunna~China.GeologicalBulletinofChina,2011,30(4):495-504Abstract:OnthebasisofstudyingthefeaturesoftheYimenFengshancopperdeposit,byapplyingdiapirstructure—petrogra
6、phicmap—pingmethod,theore—beating—typediapiridentificationmarks,materialcomposition,diapiringtype,internalstructure,tectonicband-ingcharacteristicshavebeendissected.Bycontrastingore—bearing—typeandnon—ore—bearing—typediapir.theconstructionofore—beating—typediape
7、rstructure—lithofaciezonafionpattemhasbeensetup.Fromdiapir—graysihcifieddolomite—岫1uegraydolomite,themode1appearsintrimdiaperrockfaciezoneandalteredrockfaciezone,thatis,thevolcanicbrecciafaciezone—slatebrecciafa—cieszonewi出volcanicrock-+strongcopperrnineralizati
8、onalgraysilicifieddolomiticcataclasticrockfaciezone-+coppermineralizationcataclasticdolomitefaciezone_÷weaklvsilicifieddolomitefaciezone.Themainore—bodiesoccurinthest
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