地震地质 ›› 1991, Vol. 13 ›› Issue (3): 276-282.

• 科研简报 • 上一篇    下一篇

华北东部地区上地幔运动与盆地形成关系的模拟研究

王春华, 廖素琼, 徐杰, 盛淑珍   

  1. 国家地震局地质研究所, 北京 100029
  • 收稿日期:1989-11-30 出版日期:1991-09-04 发布日期:2009-11-25
  • 基金资助:
    地震科学联合基金会资助。

MODELLING OF RELATIONSHIP BETWEEN MOVEMENT OF THE UPPER MANTLE AND FORMATION OF BASIN IN THE EASTERN NORTH CHINA

Wang Chun-hua, Liao Su-qion, Xu Jie, Sheng Shu-zhen   

  1. Institute of Geology, State Seismologioal Bureau, Beijing 100029
  • Received:1989-11-30 Online:1991-09-04 Published:2009-11-25

摘要: 在综合分析华北东部深部构造、盆地构造及其动力学特征等资料的基础上,运用离心技术讨论了该区盆地形成机制与上地幔运动的关系。这种离心技术采用物质密度差代替温度差是一种新的实验方法。实验结果表明,上地幔对流、上地幔隆起(或底辟)以及重力均衡作用产生了华北地壳的单向引张力,从而导致箕状盆地的形成。作者认为,华北东部地区盆地形成和发展的动力源与上地幔的运动和重力作用密切相关。

关键词: 华北, 上地幔, 对流, 底辟, 盆地构造

Abstract: Based on comprehensives analysis of deep structure, formation of Cenozoic basin and its dynamical characteristics, the formation mechanism of the basin and its relation to movement of the upper mantle in the eastern part of North China are discussed in this paper. The experimental study have been carried out using the centrifugal technique, in which the differential density of material is adopted instead of differential temperature.The experimental result shows that the upper mantle convection, the upheaval and diapirism and the gravity isostasy produce a monodirectional tensile force for the movement of the continental crust in North China. The tensile force represents a main mechanism for formation of dustpan-shaped basin.The authors suggest that the driving force for formation and development of the eastern North China basin is closely related to gravitational effect and movement of the upper mantle.

Key words: North China, Upper mantle, Convection, Diapirism, Basin