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Control of deep-large fault to southern Songliao fault basin group.

Control of deep-large fault to southern Songliao fault basin group.

PDF:PDF
Time:2010
Journal: Global Geology
Volumn:29
Issue:4
Pages:553-560
Type:Other
Author:Fujiang Hao,Jiyu Du,Pujun Wang,Rihui Chen,Zhongqiong Lu.
Abstract:
By the field geological survey and comprehensive study of typical seismic and structural history profiles, the authors systematically discussed on the control of deep-large fault to fault basin group. The target region is divided into three first-class tectonic regions from south to north,including western Liaoning basin,northern Liaoning basin and western Jilin basin by the Xilamulunhe --Changchun --Yanji suture belt and the translithospheric fracture in Chifeng--Kaiyuan. The northern Liaoning basin is divided into three second-class fault depression regions, including west,mid--west and mid--east regions based on the basin-control fault,the spatial and temporal distribution of the fault basin group,the structure type of fault depression and the stretching quantity in different periods. The formation and distribution of western fault depression was controlled by Xilamulunhe fault. The effect of controlling basin between Nenjiang--Balihan and Sunwu--Daqing--Fuxin faults to the fault depression in mid--west was relatively same. Both the Sunwu--Daqing--Fuxin and Jiamusi--Yitong faults performed a very important controlling function to the mid--east fault depression region. Changtu fault depression was mainly controlled by Jiamusi-- Yitong fault. The northern Liaoning basin region,as a graben,has the fault depression group not only controlled by the fault in NNE direction but also by the re-movement of Xilamulunhe fault and Chifeng--Kaiyuan fault in near EW direction. The stretch rate of fault depression region in the mid--west diminished gradually from the deposit period of Jiufetang Group to Shahai Group and then to Fuxin Group. There was a great difference between the mid--east and mid--west fault depression regions,which was caused by the deep-large faults in NNE and near EW directions in different control degree.


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