摘要
应用板块构造与盆地成因理论，并结合研究域内的具体地质情况，对中国东北中、新生代盆地成因与构造演化问题进行了讨论。研究域内中、新生代盆地的形成，不仅与东北亚环西太平洋陆洋接触带的活动性质有关，而且也与东北亚拼贴型大陆地壳的古构造格架有关。陆壳构造薄弱带控制盆地的分布；冲断作用后效、异常地幔侵壳、温度－弹性效应、剪切扩张和重力均衡为主要成盆作用；冲断后效型断陷盆地、异常地幔底劈型大陆裂谷盆地、剪切扩张型断陷盆地以及移置地体等为盆地的基本成因类型。研究域内中、新生代盆地的构造演变受主要地质事件及其所导致的地球动力学环境控制。
The Mesozoic Cenozoic basins in Northeast China, the formation and structural evolution of which are related to not only the pattern of interaction between Pal Aisa and Pal Pacific plates but also to the structural framework of the matching continental crust formed in Pre Mesozoic Era, are structural constituents of circum western Pacific tectionic district in Northeast Asia. The main factors of the basin formation are the after effects of thrusting, invading crust of abnormal mantle, temperature elastic effect, shear spread and gravitational equilibrium. There are mainly four genetic types in terms of their basin origin, that is, after effect of thrust type fault basin, abnormal mantle diapir type continental rift basin, shear spread fault basin and migrated landmass. The basins, the structural evolution of which is controled by geodynamics environment, can be divided into four main development stages.
出处
《大庆石油学院学报》
CAS
北大核心
1997年第1期1-6,共6页
Journal of Daqing Petroleum Institute
基金
国家自然科学基金
关键词
盆地基底性质
成盆作用
盆地成因类型
演化
nature of basinal basement, formation of basin function, basinal genetic type, geodynamics environment
