| Computer Code: |
KBF |
Preferred Map Code: |
KbF |
| Status Code: |
Index Level |
| Age range: |
Alportian Substage (CO)
— Kinderscoutian Substage (CK) |
| Lithological Description: |
[Obsolete: use HEBD, SAML] Ripple laminated shallow marine mudstones, siltstones and fine-grained sandstones with thick coarse-grained sandstones (Knott Copy Grit and Lane Foot Sandstone). |
| Definition of Lower Boundary: |
Lower boundary taken at base of coal and seatearths at the base of the Kirkbeck Member, which overlie cross-bedded coarse-grained sandstone (Accerhill Sandstone). |
| Definition of Upper Boundary: |
Top marked by first coarse-grained cross-bedded sandstone of the Eldroth Grit, resting conformably on mudstones and siltstones of the Kirkbeck Member. |
| Thickness: |
c.160m |
| Geographical Limits: |
SD66NE and SD66NW. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
Kirkbeck Member [Obsolete Name and Code: Use KBF]
(-337)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Stream section west of Kirkbeck Farm. |
| Reference Section |
Bentham Station Borehole. SD66NE/1 |
| Reference(s): |
| Brandon, A, Aitkenhead, N, Crofts, R G, Ellison, R A, Evans, D J, and Riley, N J. 1998. Geology of the country around Lancaster. Memoir of the British Geological Survey, Sheet 59 (England and Wales). |
| Ellison, R A. 1991. Geology of Bentham. British Geological Survey Technical Report WA/91/83. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E059
|
