Computer Code: |
SHU |
Preferred Map Code: |
Shu |
Status Code: |
Full |
Age range: |
Permian Period (P)
— Permian Period (P) |
Lithological Description: |
Predominantly reddish-brown, silty, very fine-grained sandstone and sandy siltstone, weathering to silty sand and sandy silt. Breccia lenses occur at a few localities. Beds of intraformational breccia locally present. |
Definition of Lower Boundary: |
In the western part of the outcrop, overlies and is partly laterally equivalent to the Newton St Cyres Breccia; in the eastern outcrop, overlies Crediton Breccia and Yellowford Formation; some interdigitation of silty sandstone with breccia is present at the top of the Yellowford Formation. |
Definition of Upper Boundary: |
Gradational boundary with the Dawlish Sandstone. |
Thickness: |
50-80m |
Geographical Limits: |
Outcrops around the limbs of a syncline between Upton Pyne, Newton St Cyres, and then eastwards to the River Exe. |
Parent Unit: |
Exeter Group (EXE)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Area |
Hamlet of Shute, Devon. |
Reference Section |
Shute Cross. Reddish brown silty, clayey, fine-grained sandstone with beds of fine-grained breccia. |
Reference(s): |
Edwards, R A, 1984. Geological Notes and Local Details for 1:10,000 Sheets. Parts of Sheets SS80SE and SS90SW (Thorverton, Devon). British Geological Survey, Exeter. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |