Salt-related tectonics, sedimentation and hydrocarbon plays in the Central Graben, North Sea, UKCS

Hodgson, Neil; Farnsworth, J.; Fraser, A. J.

doi:10.1144/gsl.sp.1992.067.01.03

Cited by 99 publications

(155 citation statements)

References 29 publications

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“…The evolution of salt-walled mini-basins (or "pods") has been described previously by Hodgson et al (1992) (Fig. 4).…”

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 71%

“…3), such as extension (Hodgson et al, 1992), compression (Jackson and Talbot, 1986;Brun and Fort, 2003), differential loading (Ings and Beaumont, 2010), or buoyancy (Trusheim, 1960). Where salt thickness is sufficient to allow the development of salt-walled mini-basins, the presence of pre-salt basement structures, including their geometry, trend, spacing and along-strike continuity commonly exert a significant control on the location and style of salt-wall growth (Doelling, 1988;Barde et al, 2002a;Trudgill, 2011).…”

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 99%

“…Where salt thickness is sufficient to allow the development of salt-walled mini-basins, the presence of pre-salt basement structures, including their geometry, trend, spacing and along-strike continuity commonly exert a significant control on the location and style of salt-wall growth (Doelling, 1988;Barde et al, 2002a;Trudgill, 2011). Sites of initiation of salt-wall growth and the orientation of such salt walls have been related to the distribution and orientation of various types of basement feature, including horst-and-graben structures or relict topography, which generate variations in the thickness of salt, of which triggers the onset of halokinesis (Smith et al, 1993;Hodgson et al, 1992). Salt walls typically form above horst and graben structures, although a differential thickness of salt may not itself be the sole factor responsible for the initiation of the growth of salt walls.…”

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 99%

“…Sediment accumulation in these basins continues by the process of downbuilding (Barton, 1933) until the basin grounds on the sub-salt basement, effectively preventing additional accumulation of sediments within the mini-basin. Later, axial migration or dissolution of salt from an uplifted swell, wall or stock can cause the salt uplift to collapse, thereby allowing secondary mini-basins to form over the crests of the former salt-wall highs (Hodgson et al, 1992). The typical rate of mini basin subsidence Once initiated, mini-basins can subside at sustained rates of >1 km/Ma for several million years: for example, some Pliocene and Pleistocene examples have fills that are up to 8 km thick (Hudec et al, 2009).…”

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 99%

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Evolution of fluvial systems in salt-walled mini-basins: A review and new insights

Banham

Mountney

2013

Sedimentary Geology

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“…The evolution of salt-walled mini-basins (or "pods") has been described previously by Hodgson et al (1992) (Fig. 4).…”

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 71%

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 99%

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 99%

Section: Initiation Of Salt-walled Mini-basinsmentioning

confidence: 99%

See 2 more Smart Citations

Evolution of fluvial systems in salt-walled mini-basins: A review and new insights

Banham

Mountney

2013

Sedimentary Geology

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“…The halokinesis of the Zechstein evaporites started during the Early Triassic and has been associated with rifting in response to the Hardegsen tectonic event (McKie 2014). Reactivation of the Permian fault system and localized loading by ongoing Triassic sedimentation together with uneven salt distribution resulted in a complex topography (Hodgson et al 1992;Smith et al 1993;Bishop 1996;Matthews et al 2007). This led to variations in the mini-basin development and the creation of accommodation space throughout the Triassic period, together with the potential for mini-basin grounding (Fig.…”

Section: Mini-basin Development and Halokinesismentioning

confidence: 99%

Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK

Stricker

Jones

Meadows³

et al. 2018

Pet. Sci.

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The Triassic fluvial sandstones of the Skagerrak Formation were deposited in a series of salt-walled mini-basins and act as important hydrocarbon reservoirs for several high-pressure, high-temperature (HPHT) fields in the Central Graben, North Sea. The HPHT reservoirs exhibit excellent reservoir quality considering their depth of burial and hence have been of high interest for hydrocarbon exploration. This research uses a multidisciplinary approach to assess the Skagerrak Formation fluvial reservoir quality from the Seagull field incorporating core analysis, petrography, electron microscopy, XRD analysis, fluid inclusion appraisal and burial history modelling. Halokinesis and salt withdrawal at the margin of the saltwalled mini-basin induced early disaggregation bands and fractures at shallow burial and led to increased influx of meteoric water and clay mineral infiltration from overlying sedimentation. The density of disaggregation bands correlates with the occurrence and magnitude of pore-filling authigenic clay minerals, concentrated along the margin of the saltwalled mini-basin. The fluvial channel sandstones of the Skagerrak Formation are subject to strong intra-basinal spatial reservoir quality variations despite diagenesis and low vertical effective stress having played a favourable role in arresting porosity loss.

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Minibasins and salt canopy in foreland fold-and-thrust belts: The central Sivas Basin, Turkey

et al. 2016

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The Sivas Basin in the Central Anatolian Plateau (Turkey), which formed in the context of a foreland fold‐and‐thrust belt (FTB), exhibits a typical wall and basin (WAB) province characterized by symmetric minibasins separated by continuous steep‐flanked walls and diapirs. Extensive fieldwork including regional and detailed local mapping of the contacts and margins of minibasins, and interpretation of a set of 2‐D regional seismic lines, provide evidence for the development of a shallow evaporite level separating two generations of minibasins within the WAB province. Here beds of symmetric exposed minibasins along diapir flank are younger than minibasins observed over autochthonous evaporites. Laterally away from the WAB province, increase in wavelength of the tectonic structures suggests a deepening of the decollement level. We interpret that a shallower evaporite level developed in the form of an evaporite canopy, triggered by significant lateral shortening. The Upper Eocene‐Lower Oligocene autochthonous Tuzhisar evaporite level was remobilized by the northward migrating sedimentary load and the tilting of the southern basin margin during propagation of the foreland fold‐and‐thrust belt. Asymmetric and symmetric primary minibasins were overrun by an allochthonous sheet forming a canopy. A second generation of salt withdrawal minibasins subsided into the allochthonous salt sheet. The polygonal pattern of the WAB province influences the growing fold‐and‐thrust belt system during the late stage of the secondary minibasins development. The Sivas FTB basin is the result of the interaction between fold‐and‐thrust belt propagation, evaporite remobilization, and interaction between evaporite flow and sedimentation in the minibasins.

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Salt-related tectonics, sedimentation and hydrocarbon plays in the Central Graben, North Sea, UKCS

Cited by 99 publications

References 29 publications

Evolution of fluvial systems in salt-walled mini-basins: A review and new insights

Evolution of fluvial systems in salt-walled mini-basins: A review and new insights

Reservoir quality of fluvial sandstone reservoirs in salt-walled mini-basins: an example from the Seagull field, Central Graben, North Sea, UK

Minibasins and salt canopy in foreland fold-and-thrust belts: The central Sivas Basin, Turkey

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