摘要
系统的同位素年代学及岩石地球化学研究表明，大康闪长质杂岩体的成岩时代为４９８．２Ｍａ±１５．４Ｍａ，成岩物质来源于壳／幔混合熔融。Ｓｒ，Ｎｄ同位素地球化学的研究进一步表明，大康闪长质杂岩应为华南同熔型岩浆系列中的较基性端员。
The Rb Sr isochronic age of Dakang dioritic complex is 498 Ma±15.4 Ma.From lithogeochemistry and isotopic geochemistry,it could be concluded that the complex is mixed melting products of depleted mantle and crust material.The characteristics of isotopic composition also indicate that the dioritic complex is basic member of syntectic magma series in South China,and it may be formed in a tectonic setting of subduction belt.
出处
《矿物岩石》
CAS
CSCD
北大核心
1997年第2期78-83,共6页
Mineralogy and Petrology
基金
国家自然科学基金
博士后基金
关键词
杂岩
闪长质杂岩
年代学
岩石地球化学
isotopic chronology geochemistry dioritic complex Jianou of Dakang
