构造层次与大陆壳动力学机制转变关系  

CHANGING RELATION BETWEEN TECTONIC GRADATIONS AND CONTINENTAL CRUST DYNAMIC MECHANISMS

作　　者：孙忠实[1,2] 冯亚民 

机构地区：[1]长春科技大学 [2]地矿部吉林地勘局图书馆

出　　处：《吉林地质》1997年第4期15-21,共7页Jilin Geology

摘　　要：针对构造层次研究现状和存在问题，把大陆壳划分为深部、中部、浅部和浅—表部四个构造层次。依据各自所处特定的构造位置、组成构造岩类型、形成的制约因素和地质时代等方面的区别，各构造层次分别是壳—幔间滑动、大陆张裂、隆—滑构造和变质核杂岩构造等多种大陆壳动力学机制转变过程中的产物。构造层次与大陆壳动力学机制转变关系的确定，更有利于古老板块构造连续性、整体性的研究以及多期、多层次、多旋回大陆地壳演化模式的建立。Continental crust is divided into four tectonic gradations for studying present situation and problems of tectonic gradtions,i.e.deep,mid,shallow and shallow surface tectonic gradations.Tectonic gradations are the results from change of dynamic mechanisms according to difference of tectonic site,tectonic rock types,restricted factor and times.Dynamic mechanisms consist of sliding between the earth crust and mantle,continental tension fracture,uplift bedding delamination structure and metamorphic core complex structure.The relations are determined between tectonic gradations and continental crust dynamic mechanisms.The relations are beneficial to paleoplate tectonics studying wholly and continually,as well as setting up continental crust evolution pattern of polyphase,poly—level and polycycle.

关 键 词：构造层次 动力学机制 大陆壳 

分 类 号：P541[天文地球—构造地质学] P552[天文地球—地质学]