Articles | Volume 12, issue 10
https://doi.org/10.5194/se-12-2327-2021
https://doi.org/10.5194/se-12-2327-2021
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. 
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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.