The Control of the Spatial and Temporal Differential Evolution of Boundary Faults on Faulted Basins |
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| Authors: | Yuhu Liu Chunhui Cao Ruilei Li Jianfeng Zhu Wen Xu Lan Huang Ying Luan |
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| Institution: | 1.Northeast Oil and Gas Branch，Sinopec，Changchun 130062，China;2.Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China |
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| Abstract: | The boundary faults of faulted basins generally have segmental growth characteristics. Quantitative analysis of fault growth processes and combined models is of great significance for basin formation and evolution and hydrocarbon accumulation. Taking the Fulongquan fault depression in the southern part of the Songliao Basin as an example, using the 3D seismic data and using the fault-displacement length analysis method, the segmental growth and evolution process of the boundary fault is systematically studied, and the control effect of the spatial and temporal differential evolution of boundary faults on faulted basins is analyzed. The study shows that the segmental growth control of the boundary fault of Fulongquan fault depression forms a series of semi-mantle shoals; the sedimentary center of the Shahezi-Yingcheng fault is controlled to migrate from south to north; The slanting and thrusting activities control the height of the anticline trap; the transformation of the boundary fault property controls the evolution of the basin's tectonic pattern from the tandem semi-mantle to the faulted anticline. |
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| Keywords: | Fault basin Boundary fault Differential evolution Segmental growth Songliao Basin |
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