兰聊断层的几何学、运动学特征对东濮凹陷构造样式的影响

doi:10.11743/ogg20060403

Abstract

Abstract:

Paleogene sediment in Dongpu sag had filled in a complex half-graben controlled by Lanliao fault.Except for an obvious change in its surface and detachment detpth along the axis of Dongpu sag,the Lanliao fault system can be generally described as having a listric surface.The northern segment of the fault system is a relative low-angle listric normal fault with detachment depth of 9-12 km.The middle segment is a relative high-angle listric fault with detachment depth of 14-16 km.The southern segment is a ramp-flat fault with detachment depth of 8 km in the upper part of the fault and of 11-13 km in the lower part of the fault.The kinematics of these segments also vary in different stages at Paleogene,causing the extension of the middle segment and its proportion to the total extension of Dongpu Sag relatively larger than the rest part of the sag.Under the impact of Lanliao fault geometry and its kinematics changes along the axis of Dongpu sag,the depression had developped quite different structural styles,deposit patterns and geological conditions for hydrocarbon accumulation.

Key words: extensional structure, geometry, kinematics, Lanliao fault, Dongpu sag

CLC Number:

TE111.2

Qi Jiafu, Wang Deren, Chen Shuping, Zhao Yanbing, Cheng Xiushen, Xie Chen, Xu Zhenqian. Impact of geometry and kinematics of Lanliao fault on structural styles in Dongpu sag[J]. Oil & Gas Geology, 2006, 27(4): 451-459.

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Impact of geometry and kinematics of Lanliao fault on structural styles in Dongpu sag

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