| 辽河盆地东部凹陷北段构造样式形成机制 |
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| 引用本文： | 刘立,谢文彦,郭克园,蔡国刚.辽河盆地东部凹陷北段构造样式形成机制[J].地质力学学报,2002,8(3):265-271. |
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| 作者姓名： | 刘立 谢文彦 郭克园 蔡国刚 |
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| 作者单位： | 1. 辽河油田分公司勘探开发研究院盆地所, 盘锦 124010; |
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| 摘 要： | 辽河盆地东部凹陷北段新生代盆地具下断上拗的双层结构,是伸展和走滑联合作用的断陷盆地。通过盆地的几何学、运动学、动力学分析表明:东部凹陷的形成可分为断陷期和拗陷期两个不同的阶段。在断陷期的过程中,伸展及走滑作用的影响程度是不同的。断陷早期以伸展作用为主,中期伸展和走滑联合作用,晚期以走滑作用为主。在这种独特机制作用下,不同时期断陷由不同类型的半地堑组成。断陷阶段早期构造样式主要为非旋转或旋转半地堑;中期主要为滚动半地堑及复式半地堑;晚期主要为走滑半地堑;拗陷是新生代盆地萎缩期的构造样式。不同时期构造样式的研究,实际上再现了构造样式的演化史,同时也是含油气系统成藏动态过程的研究前提。
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| 关 键 词： | 构造样式 伸展 走滑 半地堑 辽河盆地 |
| 文章编号： | 1006-6616(2002)03-0265-07 |
| 收稿时间： | 2002/3/11 0:00:00 |
| 修稿时间： | 2002年3月11日 |
THE FORMATION MACHANISM OF THE STRUCTURE STYLES OF THE NORTHERN SECTION OF EAST SAG IN LIAOHE BASIN |
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| LIU Li,XIE Wen-yan,GUO Ke-yuan and CAI Guo-gang.THE FORMATION MACHANISM OF THE STRUCTURE STYLES OF THE NORTHERN SECTION OF EAST SAG IN LIAOHE BASIN[J].Journal of Geomechanics,2002,8(3):265-271. |
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| Authors: | LIU Li XIE Wen-yan GUO Ke-yuan and CAI Guo-gang |
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| Institution: | 1. Institute of Basin, Academy of Exploration and Exploitation, Branch Co. of Liaohe Oilfield, Panjin 124010;2. Branch Co. of Liaohe Oilfield, Panjin 124010, China |
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| Abstract: | Cenozoic East Sag of Liaohe Basin consists of double structure and is a fault-depression basin with extending and strike-slipping.There is different tectonic effects in different periods that is to say extension predominated in the early and strike-slip in the late through the research about the geometric,kinematics and dynamics of the basin.Fault depression is composed of different-type half-grabens. Structural style evolution sequence is from non-tilting half-graben to tilting half-graben,structure styles in the early of fault depression,rollover half-graben and half-graben and ramp-sag are in the middle,and half graben and ramp-sag and strike-slipping half-graben in the late.Depression (From N g to now) is the style in the period of Cenozoic rift basin shrinking.The research of different period structure style reproduces actually the history of structure styles evolution.At the same time,it is a precondition of petroleum system about oil pool formation processing. |
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| Keywords: | structure styles extending strike-slipping half-graben mechanism Liaohe basin |
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