| Computer Code: |
TGS |
Preferred Map Code: |
TGS |
| Status Code: |
Full |
| Age range: |
Givetian Age (DV)
— Frasnian Age (DR) |
| Lithological Description: |
Non-pebbly sandstone. |
| Definition of Lower Boundary: |
Gradational contact with laminated sandstone at top of pebbly sandstones characterising the Haist Pebbly Sandstone Member. |
| Definition of Upper Boundary: |
Youngest unit in Orkney Old Red Sandstone sequence, no younger beds known in the area. |
| Thickness: |
1300m at Haist [HY 2320 0218] on Hoy Island, Orkney. |
| Geographical Limits: |
Orkney Islands. |
| Parent Unit: |
Hoy Sandstone Formation (HOY)
|
| Previous Name(s): |
Trowie Glen Sandstone Formation [Obsolete Name and Code: Use TGS]
(-3080)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Haist shoreline, Hoy Island, Orkney. |
| Reference(s): |
| McAlpine, A, 1978. The Upper Old Red Sandstone of Orkney, Caithness and adjacent areas. PhD Thesis, University of Newcastle-upon-Tyne. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S117
S119
|
