Articles | Volume 11, issue 4
Research article
11 Aug 2020
Research article |  | 11 Aug 2020

Pre-inversion normal fault geometry controls inversion style and magnitude, Farsund Basin, offshore southern Norway

Thomas B. Phillips, Christopher A.-L. Jackson, and James R. Norcliffe

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Cited articles

Anderson, E. M.: The dynamics of faulting, Transactions of the Edinburgh Geol. Soc., 8, 387–402, 1905. 
Babuška, V. and Plomerová, J.: The Sorgenfrei–Tornquist Zone as the mantle edge of Baltica lithosphere: new evidence from three-dimensional seismic anisotropy, Terra Nova, 16, 243–249,, 2004. 
Baig, I., Faleide, J. I., Mondol, N. H., and Jahren, J.: Burial and exhumation history controls on shale compaction and thermal maturity along the Norwegian North Sea basin margin areas, Mar. Petrol. Geol., 104, 61–85,, 2019. 
Bergerat, F., Angelier, J., and Andreasson, P.-G.: Evolution of paleostress fields and brittle deformation of the Tornquist Zone in Scania (Sweden) during Permo-Mesozoic and Cenozoic times, Tectonophysics, 444, 93–110,, 2007. 
Berthelsen, A.: The Tornquist Zone northwest of the Carpathians: An intraplate pseudosuture, GFF, 120, 223–230,, 1998. 
Short summary
Normal faults often reactivate under compression, in a process called inversion. The 3D geometry of these structures (and the effect on resultant inversion structural style) is often not considered. Using seismic reflection data, we examine how stresses form different inversion styles that are controlled by the geometry of the pre-existing structure. Geometrically simple faults are preferentially reactivated; more complex areas are typically not reactivated and instead experience bulk uplift.