南北地震带中段地震活动的板块动力学研究
|
摘要
在大陆造山带研究的最新成果基础上论述了南北地震带中段地壳的动力演变过程,结合造山带内部的高温韧性滑脱构造及地球物理深部探测成果和新生代以来的板块运动探讨了南北地震带中段地震的地壳动力学过程及成因机制.论述了在印度洋板块与欧亚板块碰撞所产生的大区域一级构造应力场及陆块与扬子板块碰撞所产生的二级构造应力场的作用下,南北地震带中段地区不同的陆块缓慢地相对运动,地震活动乃是地壳形变达到临界时不同陆块间相对运动的动力作用的反映.
On the basis of recent researth results about erogenic zone, the dynamic evolution process of the crust of the central segment of N -S earthquake belt is discussed in this paper . In combination of high temperature ductile decollement of the erogenic zoue inteiror with deep geophysial exploratiun results and plate movements since Neozoic era, the crustal dynamic process and genetic mechanism for earthquake belt are approached . In the present paper the authors also discuss the relative movements of different landmasses along N -S earthquake belt , which were caused under the actions of the first -order regional tectonic stress caused by collision of Indian Plate with Eurasia plate, and of the secondary tectonic stress caused by collision of Qing - Zang Plateau with Yangtzi Plate . Earthquake activities are the mirror of dynamic effect from a relative movements of different landmasses when the crustal deformation reaches critical value .
On the basis of recent researth results about erogenic zone, the dynamic evolution process of the crust of the central segment of N -S earthquake belt is discussed in this paper . In combination of high temperature ductile decollement of the erogenic zoue inteiror with deep geophysial exploratiun results and plate movements since Neozoic era, the crustal dynamic process and genetic mechanism for earthquake belt are approached . In the present paper the authors also discuss the relative movements of different landmasses along N -S earthquake belt , which were caused under the actions of the first -order regional tectonic stress caused by collision of Indian Plate with Eurasia plate, and of the secondary tectonic stress caused by collision of Qing - Zang Plateau with Yangtzi Plate . Earthquake activities are the mirror of dynamic effect from a relative movements of different landmasses when the crustal deformation reaches critical value .
引文
[1]闫志德,等.论中国南北地震带,近期强震危险性研究,北京:地震出版社,1989
[2]许志琴,等.中国松潘—甘孜造山带的造山过程,北京:地质出版社,1992.
[3]马杏垣,等.重力作用与构造运动,北京:地震出版社,1989,123—127
[4]方剑,等.青藏高原及邻区岩石圈三维密度结构.中国地球物理学会年刊.北京;石油工业出版社,1995.
[5]唐荣昌,等.四川活动断裂与地震,北京:地震出版社,1993.
[6]四川省地震局.松潘地震报学术讨论会文集,北京:地震出版社,1989.
[7]四川省地震局.鲜水河断裂带地震学术讨论会文集,北京:地震出版社.1985.
[2]许志琴,等.中国松潘—甘孜造山带的造山过程,北京:地质出版社,1992.
[3]马杏垣,等.重力作用与构造运动,北京:地震出版社,1989,123—127
[4]方剑,等.青藏高原及邻区岩石圈三维密度结构.中国地球物理学会年刊.北京;石油工业出版社,1995.
[5]唐荣昌,等.四川活动断裂与地震,北京:地震出版社,1993.
[6]四川省地震局.松潘地震报学术讨论会文集,北京:地震出版社,1989.
[7]四川省地震局.鲜水河断裂带地震学术讨论会文集,北京:地震出版社.1985.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心