摘要
根据地貌、地震、压应力分布、地壳运动的GPS速度矢量、新生代沉积、新生代火山岩、古地磁、深部地幔结构等特征,论证中国大陆及邻区自新生代以来呈现整体右旋运动特征,动力可能源于全球旋转背景下欧亚印度板块的碰撞,随着印度板块与亚洲板块碰撞后岩石圈加厚,以及周缘走滑断裂释放应力,导致在40Ma左右中国大陆具有明显整体右旋运动特征;随着印度板块持续向北俯冲,25Ma之后中国大陆整体进入较明显的向右旋转时期,并延续至今;简要讨论了中国大陆自新生代以来呈现的右旋运动效应。
Based on the characters of landscape, earthquake, the distribution of compressive stress, the GPS velocity vector of crustal movement, Cenozoic sedimentary, Cenozoic volcanic rocks, paleomagnetism, deep mantle structure, etc. it has been discussed that continental China ＆ adjacent areas showing the characteristics of dextral movement on the whole, which power possibly come from the collision of Eurasia-Indian plates under the global rotational setting. With the thickened lithosphere and the stress released along the strike-slip faults around the edges after the collision of Indian-Asia plates, result in the continental China showing the overall characteristics of dextral movement at about 40Ma apparently. With the Indian plate subduction toward north constantly, continental China come into more obviously dextral movement on the whole after 25 Ma going down to now. Its effect that continental China ＆ adjacent areas showing the characteristics of dextral movement on the whole since Cenozoic has been discussed briefly.
出处
《东华理工大学学报（自然科学版）》
CAS
2010年第2期101-119,共19页
Journal of East China University of Technology(Natural Science)
基金
国家科学技术部科技支撑计划课题(2006BAB01A03)
国家科学技术部国际科技合作重点项目(2007DFA21380)
国家自然科学基金项目(40572063)
中国地质调查局项目(1212010561502
1212010711814)
关键词
中国大陆及邻区
新生代
右旋运动特征
效应
continental China ＆ adjacent areas
Cenozoic
dextral movement
effect
