Re-Os dating of the Kalatongke Cu-Ni deposit,Altay Shan,NW China,and resulting geodynamic implications

作     者：Chunming Han~(a,*),Wenjiao Xiao~a,Guochun Zhao~b,Wenjun Qu~c,Andao Du~c * State Key laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China b Department of Earth Sciences,The Uttiversity of Hong Kong,Pokfulam Road,Hong Kong,China c National Research Center of Geoanalysis,Beijing,100037,China 

会议名称：《中国科学院地质与地球物理研究所2007学术年会》

会议日期：2008年

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

基　　金：the many achievements of the Xinjiang Bureau of Geology and Mineral resources and the National 305 Project supported by the State Basic Research Program of China (2001 CB409801) the National Key Project(96-915-07) the NSFC Program(40172080) This paper forms a contribution to IGCP projects 420 and 473 

关 键 词：Re-Os isotopic dating Cu-Ni deposit Geodynamics Kalatongke Altay China 

摘      要：Kalatongke is a large Cu-Ni deposit in the southern part of the Altay orogenic belt,northwestern *** and osmium isotopic analyses of Ni- and Cu-bearing sulfide minerals from the deposit have been used to determine the timing of mineralization, the source of osmium,and,by inference,the source of ore *** ore samples have Os and Re concentrations varying in the ranges 0.29 to 3.07 ppb and 6.605 to 61.10 ppb,*** of these data yield a six-point isochron with an age of 305±15 *** initial