| Computer Code: |
LHY |
Preferred Map Code: |
LHY |
| Status Code: |
Pending Upgrade |
| Age range: |
Visean Age (CV)
— Visean Age (CV) |
| Lithological Description: |
Airfall and bedded red-purple tuff with lapilli and blocks up to 0.3 metres; rooty with carbonaceous streaks near top in places, grey mudstone with fish scales in others. Overlies Markle type lava and underlies Dalmeny type lava. |
| Definition of Lower Boundary: |
21.35 metres in IGS Loch Humphrey Borehole (NS47NE/1). |
| Definition of Upper Boundary: |
At NS 4600 4550. |
| Thickness: |
Variable + 30 metres. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Clyde Plateau Volcanic Formation (CPV)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Sheet SO30E. Borehole NS47NE/1. |
| Reference(s): |
| Paterson, I B et al. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E. (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S030
|
