Computer Code: |
HHO |
Preferred Map Code: |
HHo |
Status Code: |
Index Level |
Age range: |
Arnsbergian Substage (CG)
— Arnsbergian Substage (CG) |
Lithological Description: |
[Obsolete: use SLVS] Sandstone, fine- to medium-grained, thickly bedded, with some trough cross-bedding; seatearth at top. |
Definition of Lower Boundary: |
Top of fossiliferous dark grey mudstone of the Caton Shale. |
Definition of Upper Boundary: |
Top of seatearth; unfossiliferous mudstone with siderite mudstone nodules of the Crossdale Mudstone above. |
Thickness: |
75 to 120m. |
Geographical Limits: |
Wyresdale-Ellel area, Lancashire. |
Parent Unit: |
none recorded or not applicable
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Partial Type Section |
In Damas Gill, South of Clough Wood. |
Partial Type Section |
Between Junction Bridge and Double Bridge on Lancaster Canal. |
Reference(s): |
Wilson, A A, Brandon, A and Johnson, E W, 1989. Abbeystead: Geological context of the Wyresdale Tunnel methane explosion. Technical Report of the British Geological Survey WA/89/30. |
Aitkenhead, N, Bridge, D M, Riley, N J, and Kimbell, S F. 1992. Geology of the country around Garstang. Memoir of the British Geological Survey, Sheet 67 (England and Wales) |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
E067
E059
|