| Computer Code: |
MDGT |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Arnsbergian Substage (CG)
— Arnsbergian Substage (CG) |
| Lithological Description: |
[Obsolete: use MN, SAML, SILS] A group of grit and shales. |
| Definition of Lower Boundary: |
Drawn at the base of a shale formation below the Middleton Grit where it rests conformably on sandstone of the Nesfield Sandstone Formation. |
| Definition of Upper Boundary: |
Drawn at the conformable upward passage from grit of the Brocka Bank Grit Formation to grit of the Kinderscout Grit Formation. |
| Thickness: |
c. 70m |
| Geographical Limits: |
Middleton, 2.5km northwest of Ilkley, Yorkshire. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Around Middleton, 2.5km northwest of Ilkley, Yorkshire. |
| Reference(s): |
| Stephens, J V and others, 1942. The faunal divisions of the Millstone Grit Series of Rombalds Moor and neighbourhood. Proceedings of the Yorkshire Geological Society, Vol.24, p.347. |
| Stephens, J V, Mitchell, G H and Edwards, W N. 1953. Geology of the country between Bradford and Skipton. Memoir of the Geological Survey of Great Britain, Sheet 69 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
