太平洋海山富钴结壳铂族元素(PGE)和Os同位素地球化学及....doc

太平洋海山富钴结壳铂族元素（PGE）和Os同位素地球化学及其成因意义本研究得到国际海底区域研究开发”十五”课题(编号:DY105-01-04-13,DY105-01-02-1)、国家自然科学基金(批准号:40473024,40343019)、高等学校博士学科点专项科研基金(编号：20040558049)、中国科学院广州地球化学研究所南海海洋研究所边缘海地质重点实验室研究基金课题(编号:MSGLCAS03-4)和国家教育部跨世纪优秀人才培养计划基金联合资助.
第一作者简介：孙晓明，男，1963年9月生，教授，博士导师，主要从事矿床地球化学和海底矿产资源研究.Email:[e-mail]

孙晓明1,2薛婷1何高文1,3张美1石贵勇1王生伟1陆红锋1,3
SUNXiaoMing1,2,XUETing1,HEGaowen1,3,ZHANGMei1,SHIGuiYong1,WANGShengWei1,LUHongFeng1,3

1中山大学地球科学系,广州510275
2中国科学院广州地球化学研究所南海海洋研究所边缘海地质重点实验室,广州510640
3国土资源部广州海洋地质调查局,广州510760
1.DepartmentofEarthSciences,SunYat-senUniversity,Guangzhou510275,P.R.China
2.KeyLaboratoryofMarginalSeaGeology,GuangzhouInstituteofGeochemistry&SouthChinaSeaInstituteofOceanology,ChineseAcademyofSciences,Guangzhou510640,P.R.China
3.GuangzhouMarineGeologicalSurvey,TheMinistryofLandandResoures,Guangzhou510760,P.R.China

SunXM,XueT,HeGW,ZhangM,ShiGY,WangSWandLuHF.2006.Platinumgroupelements(PGE)andOsisotopicgeochemistryofferromanganesecrustsfromPacificOceanseamountsandtheirconstraintsongenesis.ActaPetrologicaSinica,

AbstractPlatinumgroupelements(PGE),AucontentsandOsisotopiccompositionsinferromanganesecrustsandtheirbasalticsubstratesfromthecentralandwestPacificOceanwereanalyzed.TheresultsshowthattheirPGEandAucontentsarequitehighandgreatlyvaried,the∑PGEis(70.09~629.26)×10－9andthetotalAuis(0.60~26900)×10－9respectively.Inthethree-layered(outer,porousandcompactlayers)crusts,the∑PGEcontentsofporous((339.37~545.82)×10－9)andcompact((280.09~629.26)×10－9)layersaresignificantlyhigherthantheouter((70.09~133.27)×10－9)layers.Thesingle-layeredcrustsarealsoenrichedinPGE(∑PGE=(83.94~479.75)×10-9),andtheirAucontentsareusuallyhigherthanthethree-layeredones.Inaddation,∑PGEandAucontentsofferromanganesecrustsaremuchhigherthanthatinthenodules(∑PGE=(101.57~155.83)×10-9,Au=(1~4)×10-9).DifferentsedimentarywaterdepthsandoxygenfugacityoftheambientseawaterofthecrustandnodulesmaybethemajorreasonfortheirdifferentPGEandAucontents.∑PGEandPtarepositivelycorrelatedwithMn%butinverselycorrelate