Great Scar Limestone Group
Great Scar Limestone Group Stratigraphic range: Arundian-Brigantian | |
---|---|
Type | Group |
Unit of | Carboniferous Limestone Supergroup |
Sub-units | See text |
Underlies | |
Overlies | Ravenstonedale Group |
Thickness | Up to 800 m (2,600 ft) |
Lithology | |
Primary | Limestone |
Other | Mudstone, siltstone, sandstone |
Location | |
Region | England |
Country | ![]() |
Extent | Pennines to Isle of Man |
The Great Scar Limestone Group is a lithostratigraphical term referring to a succession of generally fossiliferous rock strata which occur in the Pennines in northern England and in the Isle of Man within the Tournaisian and Visean stages of the Carboniferous Period.
It is contained within the Carboniferous Limestone Supergroup.[1]
Basinal successions[]
Stainmore Trough[]
The sequence in the Stainmore Trough is thus (youngest at top):
- (Arundian age)
- (Arundian age)
- (Chadian age)
- (Chadian age)
- (Chadian age)
On the Alston Block corresponding to the North Pennines, the sequence contains the Melmerby Scar Limestone Formation.
Orton area[]
In the Orton area, the sequence is:
Kendal, Skelsmergh and Deepslack outliers[]
In south Cumbria, the sequence is:[2]
- Urswick Limestone
- (time-equivalent of Breakyneck Scar Limestone in Stainmore Trough) (Arundian age)
Isle of Man[]
On the Isle of Man, the following sequence is identified in the Castletown area:[3][4]
- (wackestones, packstones and mudstones; of Holkerian age)
- (packstones and mudstones with some mudstones and siltstones; of Arundian age)
- Skillicore Member
- Sandwick Member
- Turkeyland Member
See also[]
References[]
- ^ "Great Scar Limestone Group". The BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 27 July 2014.
- ^ 1:50,000 Geology Series England and Wales Sheet 28 Whitehaven Bedrock. British Geological Survey. 2004. ISBN 0751831603.
- ^ Stone, P; Millward, D; Young, B; Merritt, J W; Clarke, S M; McCormac, M; Lawrence, D J D (2010). British Regional Geology: Northern England. British Geological Survey, NERC. pp. 124–126. ISBN 9780852726525.
- ^ Isle of Man solid and drift geology 1:50,000 scale. British Geological Survey, NERC. 2001. ISBN 0751833266.
Categories:
- Geological groups of the United Kingdom
- Geologic formations of England
- Carboniferous System of Europe
- Carboniferous England
- Limestone formations
- Geology of the Pennines
- Geology of the Isle of Man
- United Kingdom geologic formation stubs
- Carboniferous stubs
- England stubs