A deep borehole for oil at croxteth park, near liverpool

Magraw, D.; Ramsbottom, W. H. C.

doi:10.1002/gj.3350010605

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…deepening towards the Bala Lineament (Figure 1) which has a thickened succession on its northern side (Davies et al, 2004). North to northeasterly prograding units with well-defined clinoforms also The exact trend of the platform margin is poorly defined, but suburb (Magraw & Ramsbottom, 1956). Davies et al (2004) interpreted a NW-SE trending platform break across northern Flintshire throughout the Brigantian, as suggested by basinal calciturbidite facies found to the northeast of this postulated platform break in the Blacon East borehole (Figure 1).…”

Section: Stratigraphymentioning

confidence: 99%

Mass collapse and resedimentation on a Brigantian–Early Namurian platform margin, Halkyn–Mold area, North Wales, UK

Kirkham¹

2021

Geological Journal

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Observations on Late Mississippian strata are summarized including: the Brigantian Cefn Mawr Limestone and Minera formations; and the Namurian Pentre Chert and Cefn-y-Fedw Sandstone formations. Many of those observations relate to transitory, commercial quarry exposures, especially in the Cefn Mawr Limestone Formation. During the Late Mississippian, the area was located in proximity to an unstable northeast-facing platform edge and slope on which earlier workers postulated a megaslide, probably related to the Nant Figillt Fault zone and affecting the Cefn Mawr Limestone and Pentre Chert formations. This study reinforces that general model and highlights new evidence indicative of mass wastage along the platform margin including: synsedimentary faults, slides and slumps. Penecontemporaneous submarine crevassing occurred in the Pentre Chert Formation. Limestone beds previously described as tidal or storm-related sand bars in the Cefn Mawr Limestone Formation are instead considered as gravity-driven resedimented deposits. Channelling in relatively deep water facies of the Cefn Mawr Limestone, Pentre Chert, and Cefn-y-Fedw Sandstone formations occurred.

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Section: Stratigraphymentioning

confidence: 99%

Mass collapse and resedimentation on a Brigantian–Early Namurian platform margin, Halkyn–Mold area, North Wales, UK

Kirkham¹

2021

Geological Journal

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“…Two further wells, Croxteth-1 and Croxteth-2, were drilled in the 1950s to the south of the Formby area by Steel Bros. (Magraw and Ramsbottom, 1956). These wells were drilled on a Pennine Coal Measures inlier and targeted Carboniferous reservoirs in the footwall of the Croxteth fault.…”

Section: Exploration Historymentioning

confidence: 99%

Lessons from History - Unlocking a New UK Shale Oil Play

Roche¹,

Limited²

2012

All Days

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The paper highlights how key results from historical exploration for conventional hydrocarbons, dating back over 70 years, led to the discovery of a new shale oil resource play in the UK.Early conventional exploration in the West Lancashire sub-basin, conducted by D'Arcy Exploration, a forerunner of BP, was focussed on areas of surface seepage, and resulted in the discovery of the shallow Formby oilfield in 1939. In the late 1940s and early 1950s, a number of deeper wells were drilled, without success, targeting a proposed large Carboniferous conventional trap, leakage from which was thought to be source of the shallow accumulation.

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“…At Croxteth No. I Borehole (Magraw and Ramsbottom 1965) only an approximate estimate of 260 m can be made for R,, but these records aid in filling in the basin shape in an area of scant data. Elsewhere the data are usually quite good, especially along the Pennines, where R, beds often crop out.…”

Section: A Thickness'patternsmentioning

confidence: 99%

The Marsdenian (Namurian R₂) succession west of Blackburn: Implications for the evolution of Pennine Delta Systems

1977

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A recently driven sewer tunnel west of Blackburn has shown the presence of a thick turbidite sequence between the R. gracile and R. bilingue Goniatite Bands. Above the R. bilingue Band, turbidites pass up through delta slope deposits into delta top fluviatile sandstones, derived from the northeast. The section provides evidence for the westward limit of advance of the pre-R. gracile Kinderscoutian delta slope and also enables a more accurate R, isopachyte map to be drawn.

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A deep borehole for oil at croxteth park, near liverpool

Cited by 12 publications

References 8 publications

Mass collapse and resedimentation on a Brigantian–Early Namurian platform margin, Halkyn–Mold area, North Wales, UK

Mass collapse and resedimentation on a Brigantian–Early Namurian platform margin, Halkyn–Mold area, North Wales, UK

Lessons from History - Unlocking a New UK Shale Oil Play

The Marsdenian (Namurian R₂) succession west of Blackburn: Implications for the evolution of Pennine Delta Systems

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A deep borehole for oil at croxteth park, near liverpool

Cited by 12 publications

References 8 publications

Mass collapse and resedimentation on a Brigantian–Early Namurian platform margin, Halkyn–Mold area, North Wales, UK

Mass collapse and resedimentation on a Brigantian–Early Namurian platform margin, Halkyn–Mold area, North Wales, UK

Lessons from History - Unlocking a New UK Shale Oil Play

The Marsdenian (Namurian R2) succession west of Blackburn: Implications for the evolution of Pennine Delta Systems

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The Marsdenian (Namurian R₂) succession west of Blackburn: Implications for the evolution of Pennine Delta Systems