摘要
小宽断层是梨树断陷内一条重要的走滑断层,是在火石岭时期区域NW向拉张应力产生的基底断层基础上发育形成,受营城组末期区域左旋走滑作用开始走滑活动,在登娄库末期强烈走滑,最终在嫩江组末期区域NW向挤压反转作用下定型。本文通过对小宽断层特征的详细分析,利用地层厚度对比法,以营城组厚度为参照,选取不同距离进行反推厚度对比,分析表明,小宽断层走滑位移在3~5km之间。
Xiaokuan fault is an important strike-slip fault,which is on the basis of basement fault of NE direction caused by tension stress of NW direction in Huoshiling group period,started strike-slip activity under the effect of sinistral strike-slip at the end of Yingcheng group period,had strongly strikeslip at the end of Denglouku group period,finalized the design under the effect of inverted extrusion of NW direction at the end of Nenjiang group period.In this paper,through detailed analysis of features of Xiaokuan fault,using the method of formation thickness backstepping contrast,with the thickness of Yingcheng group for reference,selected different distance thickness to contrast,the analysis shows that,Strike-slip displacement of Xiaokuan fault is between 3to 5km.
出处
《内蒙古石油化工》
CAS
2014年第11期127-129,共3页
Inner Mongolia Petrochemical Industry
关键词
梨树断陷
小宽走滑断层
地层厚度对比
走滑位移
Lishu fault depression
Xiaokuan strike-slip fault
Formation thickness contrast
Strike-slip displacement
