地球构造及其演化历史研究中的几个关键问题  

A DISCUSSION OF SOME KEY PROBLEMS IN EARTH TECTONICS AND ITS EVOLUTIONAL HISTORY

作　　者：周鼎武[1] 张成立[1] 刘良[1] 刘颖宇 

机构地区：[1]西北大学地质系

出　　处：《地学前缘》1997年第4期264-270,共7页Earth Science Frontiers

基　　金：国家自然科学基金

摘　　要：地球是经历４６亿年漫长地质演化、具有复杂的动态动力学系统的天体。地球物质组成和结构的非均一性，地球构造的多阶段、多类型、多成因、多级序性决定了地球构造的时空演化是非均变，多种构造体制共存，主次有别的复杂组合，并呈现多阶段的演化。文中对地球构造活动时期的确定分别从角度不整合、盆山转换耦合关系、岩浆作用、变质作用和同位素年龄等不同角度进行了分析和讨论。The Earth is a celestial body with a complex dynamical system, which has undergone a long term geological evolution. The multi stage, various types, origin, grade and succession of the Earth tectonics indicate that its evolution in time and space is not uniform and that the variety of tectonic regimes may co exist frequently. Furthermore, it is a complicated composite body characterized by the occurrence of structures of different grades, showing a multi stage evolution. Based on the studies of the unconformity, couple relationship of transformation between basin and orogenic belt, magmatic activity, metamorphism and isotopic dating, the determination for the time of tectonic activity is discussed in this paper.

关 键 词：地球构造 多阶段 构造时期 不整合 演化历史 

分 类 号：P54[天文地球—构造地质学] P53[天文地球—地质学]