地球圈层长周期演化旋回基本特征  

Basic Characters of Long Periodic Cycles of Geo-sphere

作　　者：陶明华[1] 邹伟宏[2] 支崇远[1] 陶亮[3] 

机构地区：[1]同济大学海洋与地球科学学院,上海200092 [2]华北油田研究院,河北任丘062552 [3]四川师范大学资源与环境学院,四川成都610068

出　　处：《同济大学学报（自然科学版）》2003年第12期1415-1420,共6页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目 ( 4 0 2 760 2 1)

摘　　要：通过对众多剖面的研究 ,以及对石炭纪以来包括全球构造运动、海平面升降、沉积作用、气候变迁、生物界演化等诸多资料的综合分析 ,阐述了地球圈层演变过程的周期性和阶段性特征 .研究表明 :各种地质演化过程的旋回性存在于多个层次当中 ;其中 ,超级旋回历时约 1 0 0Ma ,一级旋回历时约 4 0～ 5 0Ma ,二级旋回历时约 1 5Ma ,三级旋回历时约 5Ma ,以及更细微的旋回过程 .超级旋回由 2个一级旋回以弱转折衔接组成 ,而相邻超级旋回之间由强转折联系起来 .二级旋回随时间的发展过程显现为一级旋回的缩影 .超级、一级及二级旋回对称性较好 ,三级。By studies on lots of sections and data about global tectonic movement,sea level fluctuation,sedimentary process,climate variation,and biosphere evolvement,the periodicity and the staged character of evolutive process of geo sphere were expatiated.Periodicity of geological cycles indwell within multi levels.Super level cycles last a period of about 100 Ma,first level cycles last a period of 40～50 Ma,second level cycles last a period of about 15 Ma,third level cycles last a period of about 5 Ma,and so on.The supercycle was composed of two first level cycles linked by weak turning point,and the neighbor supercycles were linked by strong turning point.The developing process of second level cycles displayed epitome of first level cycles.The supercycles,the first level cycles and the second level cycles showed a symmetrical shape in a proper manner,but the third level,fourth level and the lower level cycles showed an unilateral tendency.

关 键 词：地球圈层 地质旋回 弱转折 强转折 旋回序列 

分 类 号：P534[天文地球—古生物学与地层学]