| Computer Code: |
QHI |
Preferred Map Code: |
QHI |
| Status Code: |
Pending Upgrade |
| Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
| Lithological Description: |
Pink to white, well sorted sandstone, with graded siltstone/sandstone units averaging 10 metres in thickness occurring at regular intervals. |
| Definition of Lower Boundary: |
Transitional, marked by incoming of rhythmically graded siltstone/sandstone units, disappearance of conglomerate bands, and lightening of colour. |
| Definition of Upper Boundary: |
Change to argillaceous sedimentation (not exposed). |
| Thickness: |
400 metres at type locality; thins northwards, probably to zero by NJ 523 281; reaches approx. 700 metres without top being reached at Wester Clova (NJ 451 194). |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Rhynie Group (RHN)
|
| Previous Name(s): |
Quarry Hill Sandstones [Obsolete Name and Code: Use QHI]
(-477)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Quarry Hill, Sheet 76W, Scotland. |
| Reference(s): |
| Wilson, J S G. 1890. Explanation of Sheet 76 Central Aberdeenshire. Memoir of the Geological Survey (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S076
|
