中国东北造山带—盆地系统动力学研究  

DYNAMIC STUDY ON OROGENIC BELT-BASINSYSTEMS IN NORTHEAST CHINA

作　　者：李志安[1] 闰义 

机构地区：[1]中国科学院长沙大地构造研究所,湖南长沙410013

出　　处：《大地构造与成矿学》2000年第1期31-37,共7页Geotectonica et Metallogenia

基　　金：国家科委"九五"攻关项目!(96-110 -01-04 -05)部分成果

摘　　要：本文把东北地区岩石圈和地幔作为统一整体 ,在全面考虑地质时期地幔所受热力、重力、相变力、地球自转及公转速度变化效应以及边界地质条件和变异等因素影响的基础上 ,依据地幔运动过程中遵循的动力学原理 ,建立了地质时期东北地区地幔运动的数学模型 ,并依此对东北造山带—盆地系统深部地幔流场进行了动态模拟 ,重塑了地质时期东北大陆岩石圈深部地幔的运动及其演变历史 ,探讨了东北陆内造山带—盆地系统构造演化的动力机制 ,揭示了深部地幔作用过程与山脉—盆地演化的力学联系。The lithosphere and mantle in Northeast China are taken into concurrent consideration,and based on synthetic analysis of many factors affecting the mantle's motion,according to the basic mechanical theory of the mantle's motion,mathematic models of the mantle's motion in Northeast China in the past geological period are proposed.On this basis,the flow field of the deep mantle under the orogenic belt-basin in Northeast China is simulated,and the motion and evolution of the deep mantle under the area in the past geological period are reconstructed.Finally,dynamic mechanism of tectonic evolution of orogenic belt-basin systems in the Northeast area and dynamic relation between the process of the deep mantle and evolution of mountain range-basin are discussed.

关 键 词：造山带-盆地 地幔流场 构造演化 动力机制 中国 

分 类 号：P541[天文地球—构造地质学] P542.2[天文地球—地质学]