Displacement Geometry in the Volume Containing a Single Normal Fault

Barnett, Jim A. M.; Mortimer, John; Rippon, J. H.; Walsh, John J.; Watterson, J.

doi:10.1306/948878ed-1704-11d7-8645000102c1865d

Cited by 50 publications

(12 citation statements)

References 30 publications

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“…Breaching of fault tip monoclines have been suggested to be principal mechanism for the formation of drag folds (Schlische, 1995;Khalil and McClay, 2002;Jackson, Gawthorpe and Sharp, 2006). 2)Reverse-drag folds, which are responses to displacement decrease away from faults and affect both the footwall and hangingwall sides of the faults (Barnett et al, 1987;Schlische, 1995). 3) Fault-bend folds, including rollover folds, which relate to displacement on listric or non-planar faults (Xiao and Suppe, 1992;Rotevatn and Jackson, 2014).…”

Section: Fault-related Foldingmentioning

confidence: 99%

Jurassic to Early Cretaceous basin configuration(s) in the Fingerdjupet Subbasin, SW Barents Sea

Serck

Faleide

Braathen

et al. 2017

Marine and Petroleum Geology

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This PhD thesis addresses how fault and fold growth affect accommodation development and sediment routing and fill in extensional basins. Extensional basins are key constituents of passive continental passive and intra-continental rift systems and hold great potential accumulation of reservoir-grade successions of sediments. These types of basins differ widely in terms of e.g. fault and fold properties, duration of faulting, accommodation development, tectono-climatic setting and lithology of basin substrate and fill. Accordingly, constructing general models for extensional basin evolution is challenging. Combining different types of datasets that offer different observation scale and resolution can mitigate this. This thesis presents seismic case studies from the Fingerdjupet Subbasin, southwestern Barents Sea and outcrop studies from the Bandar Jissah Basin, northeastern Oman. Seismic analyses include interpretations of faults and horizons bounding seismic reflector packages; age control was achieved

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Section: Fault-related Foldingmentioning

confidence: 99%

Jurassic to Early Cretaceous basin configuration(s) in the Fingerdjupet Subbasin, SW Barents Sea

Serck

Faleide

Braathen

et al. 2017

Marine and Petroleum Geology

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“…Such high displacement gradients can indicate either (1) fault interaction with the free surface, i.e. syn-sedimentary activity, if the displacement gradient increase coincides with the stratigraphic expansion of the displaced units across faults or (2) propagation across a mechanical barrier, if there is no stratigraphic expansion (Baudon and Cartwright, 2008a). The former case is confirmed in the Unterhaching and Mauerstetten areas, where it is inferred that the faults were syn-sedimentary in the Mesozoic.…”

Section: Pre-existing Structuresmentioning

confidence: 86%

“…8a, b) resulted from the additional slip that accumulated at the mechanical boundary for the faults to propagate through the barrier (e.g. Wilkins and Gross, 2002;Baudon and Cartwright, 2008a).…”

Section: Growth Of the Lower Faultsmentioning

confidence: 99%

Multiphase, decoupled faulting in the southern German Molasse Basin – evidence from 3-D seismic data

et al. 2020

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Abstract. We use three-dimensional seismic reflection data from the southern German Molasse Basin to investigate the structural style and evolution of a geometrically decoupled fault network in close proximity to the Alpine deformation front. We recognise two fault arrays that are vertically separated by a clay-rich layer – lower normal faults and upper normal and reverse faults. A frontal thrust fault partially overprints the upper fault array. Analysis of seismic stratigraphy, syn-kinematic strata, throw distribution, and spatial relationships between faults suggest a multiphase fault evolution: (1) initiation of the lower normal faults in the Upper Jurassic carbonate platform during the early Oligocene, (2) development of the upper normal faults in the Cenozoic sediments during the late Oligocene, and (3) reverse reactivation of the upper normal faults and thrusting during the mid-Miocene. These distinct phases document the evolution of the stress field as the Alpine orogen propagated across the foreland. We postulate that interplay between the horizontal compression and vertical stresses due to the syn-sedimentary loading resulted in the intermittent normal faulting. The vertical stress gradients within the flexed foredeep defined the independent development of the upper faults above the lower faults, whereas mechanical behaviour of the clay-rich layer precluded the subsequent linkage of the fault arrays. The thrust fault must have been facilitated by the reverse reactivation of the upper normal faults, as its maximum displacement and extent correlate with the occurrence of these faults. We conclude that the evolving tectonic stresses were the primary mechanism of fault activation, whereas the mechanical stratigraphy and pre-existing structures locally governed the structural style.

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“…The former two cases suggest that the faults propagated into the basement from the shallower stratigraphic unit. The nearelliptical tip lines of faults NE and Gartenberg S imply an initially elliptical slip distribution on these faults (Barnett et al, 1987). Such slip distribution is characteristic of blind fault growth by radial propagation, whereby the site of fault nucleation typically corresponds to the region of maximum displacement (Watterson, 1986;Barnett et al, 1987;Walsch and Watterson, 1987;Baudon and Cartwright, 2008a, b).…”

Section: Pre-existing Structuresmentioning

confidence: 99%

“…The nearelliptical tip lines of faults NE and Gartenberg S imply an initially elliptical slip distribution on these faults (Barnett et al, 1987). Such slip distribution is characteristic of blind fault growth by radial propagation, whereby the site of fault nucleation typically corresponds to the region of maximum displacement (Watterson, 1986;Barnett et al, 1987;Walsch and Watterson, 1987;Baudon and Cartwright, 2008a, b). The throw distribution on the faults NE, Gartenberg S and Gartenberg N shows that the maximum displacement could occur between top Callovian and top Berriasian, suggesting that these faults nucleated within the carbonate platform and were not rooted in the basement.…”

Section: Pre-existing Structuresmentioning

confidence: 99%

Multiphase, decoupled faulting in the southern German Molasse Basin – evidence from 3D seismic data

Shipilin¹,

Tanner²,

Hartmann³

et al. 2020

Preprint

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Abstract. We use three-dimensional seismic reflection data from the southern German Molasse Basin to investigate the struc-tural style and evolution of a geometrically decoupled fault network in close proximity to the Alpine deformation front. We recognise two fault arrays that are vertically separated by a clay-rich detachment horizon. A large-scale thrust partially over-prints the upper fault array. Analysis of seismic stratigraphy, syn-kinematic strata, throw distribution, and spatial relationships between faults suggest a multiphase fault evolution: (1) initiation of the lower fault array in the Upper Jurassic carbonate platform during the Rupelian, (2) development of the upper fault array in the Cenozoic sediments during the Chattian, and (3) reverse reactivation of the upper faults and thrusting during the mid-Miocene. These phases document the evolution of the stress field during the migration of the forebulge (phase 1), foredeep (phase 2) and the toe of the orogenic front (phase 3) across the investigated area. We postulate that phase 2 was controlled by the vertical stress gradients, whereby a lower horizontal stress component within the Cenozoic sediments defined the independent development of the upper faults above the lower faults. Mechanical behaviour of the clay-rich horizon precluded the subsequent linkage of the fault arrays. A large-scale thrust must have been facilitated by the reverse reactivation of the upper normal faults, as its maximum displacement and extent correlate with the occurrence of these faults. We conclude that the evolving tectonic stresses were the primary mechanism of fault activation, whereas the mechanical stratigraphy and pre-existing structures locally governed the structural style.

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Displacement Geometry in the Volume Containing a Single Normal Fault

Cited by 50 publications

References 30 publications

Jurassic to Early Cretaceous basin configuration(s) in the Fingerdjupet Subbasin, SW Barents Sea

Jurassic to Early Cretaceous basin configuration(s) in the Fingerdjupet Subbasin, SW Barents Sea

Multiphase, decoupled faulting in the southern German Molasse Basin – evidence from 3-D seismic data

Multiphase, decoupled faulting in the southern German Molasse Basin – evidence from 3D seismic data

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