Geometrically coherent continuous deformation in the volume surrounding a seismically imaged normal fault-array

Long, J. J.; Imber, Jonathan B.

doi:10.1016/j.jsg.2009.11.009

Cited by 51 publications

(43 citation statements)

References 32 publications

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“…Ductile displacement represented by fault drag was accounted for by extrapolating the reflectors to the fault along the trend of the horizon outside of the drag zone (Long and Imber, 2010;Whipp et al, 2014). Where sediment is partly or fully eroded in the footwall, faults and horizons were projected using local dip and stratigraphic thickness data.…”

Section: Methodsmentioning

confidence: 99%

Influence of fault reactivation during multiphase rifting: the Oseberg area, Northern North Sea rift

Deng¹,

Fossen²,

Gawthorpe³

et al. 2017

Preprint

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Multiphase rifts tend to produce fault populations that evolve by the formation of new faults and reactivation of earlier faults. The resulting fault patterns tend to be complex and difficult to decipher. In this work we use seismic reflection data to examine the evolution of a normal fault network in the Oseberg Fault Block in the northern North Sea Rift System -a rift system that experienced Permian -Early Triassic and Middle Jurassic -Early Cretaceous rifting and exhibits N-S, NW-SE and NE-SW oriented faults.Both N-S-and NW-SE-striking faults were established during the Permian -Early

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Section: Methodsmentioning

confidence: 99%

Influence of fault reactivation during multiphase rifting: the Oseberg area, Northern North Sea rift

Deng¹,

Fossen²,

Gawthorpe³

et al. 2017

Preprint

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show abstract

“…Dutzer et al (2010) used volume-based seismic attributes to determine fault internal structure and transmissibility. Long and Imber (2010; mapped the spatial distribution of fault-related deformation using a seismic dip anomaly attribute. Iacopini and Butler (2011) and Iacopini et al (2012) described the geometry of a complex fold-and-thrust-belt and associated damage zones by combining volume-based seismic attributes and visualisation techniques.…”

Section: Characterisation Of Faults In Seismicmentioning

confidence: 99%

“…Few examples in the literature examine the potential of seismic data to elucidate the complexity of fault structure and properties in space and time (e.g. Long and Imber, 2010). We propose a synthetic workflow to assess the potential of reflection seismic data for imaging fault structure and properties.…”

Section: Introductionmentioning

confidence: 99%

From mechanical modeling to seismic imaging of faults: A synthetic workflow to study the impact of faults on seismic

Botter

Cardozo

Hardy

et al. 2014

Marine and Petroleum Geology

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“…To accurately constrain the evolution of a fault all fault slip-related strain much be explicitly recorded; this means that ductile deformation, such as fault-parallel folding, and brittle strains associated with fault 685 displacement must be incorporated into the throw-length plot (Meyer et al, 2002;Long and Imber, 2010;Whipp et al, 2014;Duffy et al, 2015). Where fault-parallel folding occurs, hanging wall and footwall cut-offs were defined by projecting the regional dip of the horizon, as measured some distance away from the fault, to the fault plane (see supplementary Fig.…”

Section: Appendix a -Throw-length Fault Analysesmentioning

confidence: 99%

“…Long and Imber, 2010;Duffy et al, 2015). Footwall erosion occurs across some of the faults in the area, meaning the cut-offs of some stratigraphic horizons are absent (Fig.…”

mentioning

confidence: 99%

Oblique reactivation of lithosphere-scale lineaments controls rift physiography – The upper crustal expression of the Sorgenfrei-Tornquist Zone, offshore southern Norway

Phillips¹,

Jackson²,

Bell³

et al. 2017

Preprint

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Abstract. Pre-existing structures within sub-crustal lithosphere may localise stresses during subsequent tectonic events, resulting in complex fault systems at upper crustal levels. As these sub-crustal structures are difficult to resolve at great depths, the evolution of kinematically and perhaps geometrically linked upper-crustal fault populations can offer insights into their deformation history, including when and how they reactivate and accommodate stresses during later tectonic events. In this study, we use borehole-constrained 2D and 3D 15seismic reflection data to investigate the structural development of the Farsund Basin, offshore southern Norway; this E-trending basin represents the upper crustal expression of the Sorgenfrei-Tornquist Zone, a major lithosphere-scale lineament extending >1000 km across Central Europe. The southern margin of the Farsund Basin is characterised by N-S and E-W-striking fault populations, the latter extending down through the Moho and potentially linking with the Sorgenfrei-Tornquist Zone as imaged within sub-crustal lithosphere. Due to this 20 geometric linkage, we can analyse the upper crustal fault populations to infer the kinematics of the SorgenfreiTornquist Zone. We use throw-length (T-x) analysis and fault displacement backstripping techniques to determine the geometric and kinematic evolution of upper-crustal fault populations during the multiphase evolution of the Farsund Basin. We document a period of sinistral strike-slip activity along E-W-striking faults during the Early Jurassic, representing a hitherto undocumented phase of activity along the Sorgenfrei-Tornquist 25Zone. These E-W-striking upper-crustal faults are later obliquely reactivated under a dextral stress regime during the Early Cretaceous, with new faults also propagating away from pre-existing ones, representing a switch to a phase of dextral transtension along the Sorgenfrei-Tornquist Zone. We show that the SorgenfreiTornquist Zone represents a long-lived lithosphere-scale lineament that is periodically reactivated throughout its protracted geological history. The upper crustal component of the lineament is reactivated in a range of tectonic 30 styles, including both sinistral and dextral strike-slip motions, with the geometry and kinematics of these faults often inconsistent with what may otherwise be inferred from regional tectonics alone. Understanding these different styles of reactivation not only allows us to better understand the influence of sub-crustal lithospheric structure on rifting, but also offers insights into the prevailing stress field during regional tectonic events. 35Solid Earth Discuss., https://doi

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Geometrically coherent continuous deformation in the volume surrounding a seismically imaged normal fault-array

Cited by 51 publications

References 32 publications

Influence of fault reactivation during multiphase rifting: the Oseberg area, Northern North Sea rift

Influence of fault reactivation during multiphase rifting: the Oseberg area, Northern North Sea rift

From mechanical modeling to seismic imaging of faults: A synthetic workflow to study the impact of faults on seismic

Oblique reactivation of lithosphere-scale lineaments controls rift physiography – The upper crustal expression of the Sorgenfrei-Tornquist Zone, offshore southern Norway

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