| Computer Code: |
DLB |
Preferred Map Code: |
DlF |
| Status Code: |
Full |
| Age range: |
Arundian Substage (CJ)
— Arundian Substage (CJ) |
| Lithological Description: |
At base, mid to dark grey even-bedded carbonate grainstones and packstones; middle part, dark grey thinly bedded packstones and wackestones with many shaly interbeds; upper part, even bedded packstones and grainstones. |
| Definition of Lower Boundary: |
At siltstone parting at top of Redhill Limestone Formation, exposed in road-cutting on north side of Elliscales roundabout on Dalton bypass, A590, Furness. |
| Definition of Upper Boundary: |
Base of overlying Park Limestone. |
| Thickness: |
90-255m |
| Geographical Limits: |
South Cumbria, north Lancashire. |
| Parent Unit: |
Great Scar Limestone Group (GSCL)
|
| Previous Name(s): |
Dalton Beds [Obsolete Name and Code: Use DLB]
(-3995)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Dalton bypass, A590, Furness exposures in road cuttings and Elliscales Quarry. |
| Reference Section |
Plumpton Quarries, Ulverston. Quarry and natural sections. |
| Reference(s): |
| Rose, W C C. 1977. Geology and Hematite deposits of South Cumbria. Economic Memoir for 1:50,000 Sheet 58 and southern part of Sheet 48. Memoir of the geological Survey of Great Britain. |
| Dunham, K C and Rose, W C C. 1941. Geology of the iron-ore field of south Cumberland and Furness. Geological Survey of Great Britain, Wartime Pamphlet, No.16. |
| Johnson, E W, Soper, N J, Burgess, I C, Ball, D F, Beddoe-Stephens, B, Carruthers, R M, Fortey, N J, Hirons, S, Merritt, J W, Millward, D, Roberts, B, Walker, A B and Young, B. 2001. Geology of the country around Ulverston. Memoir of the British Geological Survey, England and Wales, Sheet 48. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E048
|
