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地球公转轨道偏心率变化的构造运动响应
引用本文:吴锡浩,蒋复初,肖华国.地球公转轨道偏心率变化的构造运动响应[J].地质力学学报,1995,1(1):8-14.
作者姓名:吴锡浩  蒋复初  肖华国
作者单位:中国地质科学院地质力学研究所,中国地质科学院地质力学研究所,中国地质科学院地质力学研究所
基金项目:本研究得到国家自然科学基金、地质矿产部专项课题、中国科学院"八五"资环重点项目、黄土与第四纪地质国家重点实验室基金资助。
摘    要:最近3Ma发生的主要构造运动和气候变化事件,在准0.4Ma周期上与地球转道偏心率变化存在一致性。据黄土高原地层记录划分的构造气候旋回界限,日历年龄分别为0.07、0.46、0.83、1.32、1.70、2.08、2.74MaBP,对应于偏心率曲线动幅度由大变小时段的特定转折位置,文中分析了地球公转运动变速的基本数据及其对地球自转运动和圈层相互作用的可能影响,探讨了轨道偏心经变化对构造运动的驱动机制

关 键 词:地球公转  轨道偏心率  构造运动  气候变化

THE RESPONSE OF THE CRUST AS TECTONIC MOVEMENTS TO THE CHANGES OF ECCENTRICITY OF THE EARTH'S ORBIT
Wu Xihao,Jiang Fuchu and Xiao Huaguo.THE RESPONSE OF THE CRUST AS TECTONIC MOVEMENTS TO THE CHANGES OF ECCENTRICITY OF THE EARTH'S ORBIT[J].Journal of Geomechanics,1995,1(1):8-14.
Authors:Wu Xihao  Jiang Fuchu and Xiao Huaguo
Institution:Institute of Geomechanics, CAGS,Institute of Geomechanics, CAGS and Institute of Geomechanics, CAGS
Abstract:The main tectonic events and climatic changes which occurred in the last 3Ma coincide with the Earth''s orbital eccentricity changes having a period of about 0.4Ma. The boundaries of tectonoclimatic cycles determined from the stratigraphic records in the Loess Plateau giving solar calendar ages of 0.07, 0.46, 0.83, 1.32, 1.70, 2.08, 2.47MaBP respectively correspond to the time intervals where there is a decrease of the eccentricity of the Earth''s orbit. Also,the basic data concerning the change of speed in the Earth''s revolution and its possible effects on the Earth''s rotation and on the interaction between the individual geospheres have been analysed. That the changes of eccentricity of the Earth''s orbit may have resulted in a driving force for tectonic movemants is discussed. Finally, it is also pointed out that a study of the tectonoclimatic cycles is of importance for further development of the geomechanics theory.
Keywords:Earth''s revolution  orbital eccentricity  quasi-period of 0  4Ma  tectonic movements  tectonoclimatic cycles
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