南秦岭东江口岩体闪长质包体地球化学特征及成因探讨  

DISCUSSING ON THE GEOCHEMICAL FEATURES AND GENESIS FOR DIORITIC ENCLAVES IN DONGJIANGKOU PLUTON, SOUTHERN QINLING

作　　者：朱茂旭[1,2] 骆庭川[1,2] 张宏飞 

机构地区：[1]中国科学院地球化学研究所 [2]中国地质大学地球化学研究所

出　　处：《矿物岩石》1997年第2期28-34,共7页Mineralogy and Petrology

基　　金：国家自然科学基金

摘　　要：本文对南秦岭东江口岩体中的闪长质包体的主量元素，微量元素地球化学特征及包体形成的温度和压力条件进行分析，揭示出闪长质包体与寄主岩体是同源的混溶包体。根据新的成因解释，认为不混溶包体的形成机理是由均一岩浆在演化过程中长英质岩浆和铁镁质岩浆有序化的结果。在有序化过程中。In this paper based on the research for the chemical compostions,geochemical features of trace element and forming temperature and pressure of dioritic enclaves in Dongjiangkou pluton, it is reveals that the enclaves are homologous with host pluton,and are liquid immiscible ones.Besides, it is indicated the forming mechanism of enclaves as a resulted of the ordering of felsic and femic end members which may be complex during the evolution of homogeneous magma.

关 键 词：闪长质包体 不混溶 岩体 地球化学 岩石成因 

分 类 号：P584[天文地球—岩石学] P581[天文地球—地质学]