沾化凹陷中、新生代断裂发育及其形成机制分析

沾化凹陷中、新生代断裂发育及其形成机制分析

吴智平, 李伟, 郑德顺, 吕洪波

石油大学地球资源与信息学院山东东营 257061

收稿日期:2004-09-20 修回日期:2004-09-20 出版日期:2004-09-20 发布日期:2004-09-20

Analysis on Features and Origins of the Mesozoic and Cenozoic Faults in Zhanhua Sag

Wu Zhi-ping, LI Wei, Zheng De-shun, Lü Hong-bo

College of Earth's Resources & Information, Petroleum University, Dongying, Shandong Province 257061, China

Received:2004-09-20 Revised:2004-09-20 Online:2004-09-20 Published:2004-09-20

摘要/Abstract

摘要： 在采用断层活动速率定量分析断裂活动性的基础上，就印支运动以来沾化凹陷断裂的发育期次、组合特点、成因机制等进行了研究和探讨。结果表明：中、新生代济阳坳陷沾化凹陷的断裂发育受控于欧亚构造域的西伯利亚板块、扬子板块与华北板块的挤压拼接和滨太平洋构造域及其郯庐断裂带的活动两大构造体系域；晚三叠世NW向逆推断层的发育为华北板块与扬子板块挤压拼接时产生的板内局部挤压调整效应；晚侏罗世—白垩纪NW向断层发生的构造反转是在太平洋板块俯冲造成地幔上涌所产生水平拉张背景下郯庐断裂左行走滑的结果；燕山—喜山构造阶段过渡期郯庐断裂由左旋至右旋的转换，则导致了研究区断裂发育由NW向至NE(NEE)向的转型。

Abstract: Based on the quantative analysis of faults activity with faults activity velocity, the development episodes, combination characteristics and formation mechanisms of faults in Zhanhua Sag since the Indonesian movement were studied and discussed.The results show that the development of Zhanhua Sag in Mesozoic and Cenozoic was mainly controlled by the convergence of Siberia plate, Yangtze plate and North China plate in Eurasian tectonic system and the activity of Tanlu fault zone of circum-Pacific tectonic system.The development of NW-trending reverse faults in Late Triassic was the local extrusion adjustment result of convergence of North China plate and Yangtze plate.The reversion of NW-trending faults in late Jurassic and Cretaceous was the result of sinistral shear of Tanlu fault zone under the level stretching background caused by the ascending of mantle.which was the result of subduction of Pacific plate.In the interim of Yanshan-Himalayan stage,the transition from sinistral to dextrorotation of Tanlu fault zone resulted in the transition of faults from NW-trending to NE(NEE)-trending in Zhanhua Sag.

吴智平, 李伟, 郑德顺, 吕洪波. 沾化凹陷中、新生代断裂发育及其形成机制分析[J]. J4.

Wu Zhi-ping, LI Wei, Zheng De-shun, Lü Hong-bo. Analysis on Features and Origins of the Mesozoic and Cenozoic Faults in Zhanhua Sag[J]. J4.