大陆造山带基底岩块中的基性岩墙群研究——以南秦岭武当地块为例  

STUDY ON BASIC DYKE SWARMS DEVELOPED IN THE BASEMENT IN THE CONTINENTAL OROGEN: AN EXAMPLE FROM WUDANG BLOCK IN SOUTHERN QINLING

作　　者：周鼎武[1] 张成立[1] 刘颖宇 

机构地区：[1]西北大学地质系

出　　处：《地球科学进展》1998年第2期151-156,共6页Advances in Earth Science

基　　金：国家自然科学基金;"武当地块基性岩墙群侵位和构造动力学研究"(项目编号:49572145)资助

摘　　要：基性岩墙群是大陆和大陆造山带内发育的特殊地质体，包含丰富的地球动力学信息。造山带内基底岩块是造山作用过程卷入造山带的外来或原地地块（陆块），基底岩块中基性岩墙群的发育及其变形、变质特征，既为造山带内存在古老陆块和古陆块的裂离提供了证据，也为造山过程的构造动力学研究提供了重要信息。加强造山带基底岩块中基性岩墙群的多学科综合研究，对于探讨大陆造山带的形成、演化及其动力学过程具重要意义。The basic dyke swarms is a kind of special geologic terrain in continent and continental orogen,which can provide us abundant geodynamic information.The orogenic basement is a exotic or autochthonous block involved in orogenic belt during orogenic processes.The occurrence of basic dyke swarms developed in the basement and its metamorphism as well as its deformation not only give us a evidence of existing ancient block and its cracking in orogen but also provide us an important information to study the tectonic dynamics in orogen processes.Therefore,the comprehensive study on the basic dyke swarms in basement block involved in orogenic belt is of significant to research the formation and development of continental orogenic belt as well as its dynamical processes.

关 键 词：大陆造山带 基性岩墙群 地球动力学 岩块 造山带 

分 类 号：P583[天文地球—岩石学] P542.2[天文地球—地质学]