It is found that the NW-trending basement strike-slip fault zone generally presents left-lateral slip but with variable strike-slip deformations in different evolutionary stages. A new method is proposed for determining the strike-slip directions based on seismic analysis to measure the change of vertical displacements and the difference in tectonic-activity intensities between the two sides of the fault. The characteristic fault patterns include vertical faults and flower-like structures on the profile planar linear extension of fault with staggered geological boundaries and obvious segmentation of master faults in “ribbon-like” or “dolphin-like” strike-slip fault patterns and with changing mechanical properties. This paper reports the new discovery of large-scale NW and NE-trending basement strike-slip fault zones in Fuling area, eastern Sichuan Basin, and establishes the identification criteria for strike-slip faults in this area based on characteristic fault patterns. ![]() Increasingly more attention has been paid to the identification and geometrical/kinematical characterization of basement strike-slip faults as well as the role of “reservoir/pool controls” in this type of fault systems. ![]() ![]() Basement strike-slip fault zones of petroliferous basins are newly recognized high-yield hydrocarbon enrichment zones with broad prospects for oil/gas exploration and development.
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