The geology and hydrocarbon prospectivity of the North Channel Basin

Maddox, S.; Blow, R A; O’Brien, Sean R.

doi:10.1144/gsl.sp.1997.124.01.07

Cited by 10 publications

(11 citation statements)

References 24 publications

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“…Due to the volume and uncertain distribution of munitions on the seabed, coring within Beaufort's Dyke was not possible. Therefore, a tentative interpretation of the acoustic units described from the seismic data is inferred by comparison with published research of local offshore and onshore geology (Dobson, 1977; Maddox et al ., 1997; Jackson et al ., 1995) and similar submarine features located in the North Sea (Long and Stoker, 1986a; Wingfield, 1990; Huuse and Lykke‐Andersen, 2000; Kluiving et al ., 2003).…”

Section: Results and Interpretationmentioning

confidence: 99%

“…Beaufort's Dyke has most likely incised both groups due to its position on the boundary between their mapped extents. Although the solid geology has not been sampled directly within the study area, it can be inferred from boreholes onshore in Northern Ireland to comprise interlaminated claystones and siltstones with layers of halite (Jackson et al ., 1995; Maddox et al ., 1997).…”

Section: Introductionmentioning

confidence: 99%

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The formation and evolution of an isolated submarine valley in the North Channel, Irish Sea: an investigation of Beaufort's Dyke

Callaway

Quinn²,

Brown

et al. 2011

J Quaternary Science

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Beaufort's Dyke is a submarine depression located in the North Channel of the Irish Sea. With a maximum depth of 312 m, the dyke is one of the deepest areas within the European continental shelf. Integration and interpretation of 450 km of sparker seismic data and full-coverage bathymetric data derived from multi-beam echo sounder surveys allow for the investigation of the formation processes of Beaufort's Dyke and the evolution of geomorphological features within it. The dyke, formed by composite subglacial processes dominated by subglacial meltwater discharge, is interpreted as a tunnel valley. The regional isolation of Beaufort's Dyke may be explained by the bounding of the North Channel by the bedrock masses of Ireland and Scotland, coupled with the exploitation of structural weakness along a fault plane and presence of halite in the eroded substrate enhancing the erosive potential of the overlying glacier. Beaufort's Dyke has probably been maintained as an open feature by strong rectilinear tidal currents. The morphology of lunate sediment waves and a large parabolic bedform towards the south of the dyke contradict the observed dominant S-N mean hydrodynamic flow recorded within the North Channel, suggesting an alternative hydrodynamic regime either within the dyke or during bedform creation

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Section: Results and Interpretationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The formation and evolution of an isolated submarine valley in the North Channel, Irish Sea: an investigation of Beaufort's Dyke

Callaway

Quinn²,

Brown

et al. 2011

J Quaternary Science

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“…Finally the southerly margin of the SUM is taken as the Solway Line after Cope et al (1992) Along the SUF there is a 'transfer zone', separating the Lame and Portpatrick basins (Fig. 1 & Wilson 1975;Penn et al 1983); (b) the Lough Neagh Basin, based on the Mire House (Fowler & Robbie 1961) and Ballymacilroy (Thompson 1979) boreholes, together with information from Mitchell (1984). feature exists in the East Irish Sea Basin (Maddox et al 1997).…”

Section: Regional Structural Settingmentioning

confidence: 99%

“…1 & Wilson 1975;Penn et al 1983); (b) the Lough Neagh Basin, based on the Mire House (Fowler & Robbie 1961) and Ballymacilroy (Thompson 1979) boreholes, together with information from Mitchell (1984). feature exists in the East Irish Sea Basin (Maddox et al 1997). There does appear to be a regular pattern of alternating offshore basin orientations in the North Channel region (Fig.…”

Section: Regional Structural Settingmentioning

confidence: 99%

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Tectonic evolution of the Larne Basin

Shelton¹

1997

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The Lame Basin lies in the Midland Valley terrane between Northern Ireland and SW Scotland. A proportion of the basin lies onshore Northern Ireland, with an offshore continuation into the North Channel seaway. The basin is orientated NE-SW, and the sedimentary basin fill thickens to the west. Extensional faults in the south of the basin dip generally to the east, those in the north to the northwest. Preserved sediments range in age from Carboniferous to Tertiary, but are predominantly Permo-Triassic. Integration of seismic interpretations, well data and outcrop fault and fracture measurements has revealed a number of Mesozoic and Cenozoic tectonic events. Late Carboniferous N-S compression was followed by a major phase of regional early Permian ENE-WSW/NE-SW extension. ENE-WSW extension followed in the late Triassic and early Jurassic with post-

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The development of a regional-scale intraplate strike-slip fault system; Alpine deformation in the north of Ireland

Anderson

Walsh

Cooper

2018

Journal of Structural Geology

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The geology and hydrocarbon prospectivity of the North Channel Basin

Abstract: The geology and hydrocarbon prospectivity of the offshore North Channel has been evaluated, integrating data from a number of onshore wells with seismic,

Cited by 10 publications

References 24 publications

The formation and evolution of an isolated submarine valley in the North Channel, Irish Sea: an investigation of Beaufort's Dyke

The formation and evolution of an isolated submarine valley in the North Channel, Irish Sea: an investigation of Beaufort's Dyke

Tectonic evolution of the Larne Basin

The development of a regional-scale intraplate strike-slip fault system; Alpine deformation in the north of Ireland

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