| 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
|
