Articles | Volume 12, issue 10
Research article
14 Oct 2021
Research article |  | 14 Oct 2021

Impact of basement thrust faults on low-angle normal faults and rift basin evolution: a case study in the Enping sag, Pearl River Basin

Chao Deng, Rixiang Zhu, Jianhui Han, Yu Shu, Yuxiang Wu, Kefeng Hou, and Wei Long

Related subject area

Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Structural geology and tectonics, paleoseismology, rock physics, experimental deformation | Discipline: Structural geology
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Cited articles

Ackermann, R. V. and Schlische, R. W.: Anticlustering of small normal faults around larger faults, Geology, 25, 1127–1130, 1997. 
Anderson, E. M.: The Dynamics of Faulting, Olivier and Boyd, Edinburgh, ISSN: 0371-6260, 1951. 
Axen, G.: Pore pressure, stress increase and fault weakening in low-angle normal faulting, J. Geophys. Res.-Sol. Ea., 97, 8979–8991, 1992. 
Axen, G. J.: The geometry of planar domino-style normal faults above a dipping basal detachment, J. Struct. Geol., 10, 405–411, 1988. 
Axen, G. J.: Ramp-flat detachment faulting and low-angle normal reactivation of the Tule Springs thrust, southern Nevada, Geol. Soc. Am. Bull., 105, 1076–1090, 1993. 
Short summary
This study uses seismic reflection data to interpret the geometric relationship and evolution of intra-basement and rift-related structures in the Enping sag in the northern South China Sea. Our observations suggest the primary control of pre-existing thrust faults is the formation of low-angle normal faults, with possible help from low-friction materials, and the significant role of pre-existing basement thrust faults in fault geometry, paleotopography, and syn-rift stratigraphy of rift basins.