| Computer Code: |
SDNSG |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Anglian Stage (QA)
— Anglian Stage (QA) |
| Lithological Description: |
Yellowish red sand or sandy gravel with sporadic cobbles. Gravel and cobbles are dominated by well-rounded Sherwood Sandstone derived quartzite but with some rounded erratics of granite, felsite and Coal Measures sandstone. Fossiliferous in part. |
| Definition of Lower Boundary: |
Sharp, erosive, unconformable contact with bedrock. Strongly channelised. |
| Definition of Upper Boundary: |
Either the ground surface or the basal surface of red silt of the Trysull Silt Formation or till and sand and gravel of the Stockport Glacigenic Formation. |
| Thickness: |
3 to 34m |
| Geographical Limits: |
Narrow, linear belt between Seisdon and Trysull, Staffordshire. |
| Parent Unit: |
Irish Sea Coast (Albion) Glacigenic Subgroup (ISCAG)
|
| Previous Name(s): |
Trysull Sands and Gravel [Obsolete Name and Code: Use SDNSG]
(-1809)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Former quarry at Seisdon (Lowe's Pit), Staffordshire. Morgan, A V. 1973. |
| Reference(s): |
| Maddy, D. 1999. English Midlands Chapter 3 in Bowen, D Q (Editor), A revised correlation of the Quaternary deposits in the British Isles. Geological Society Special Report, No.23. |
| Morgan, A V. 1973. The Pleistocene geology of the area north and west of Wolverhampton, Staffordshire, England. Philosophical Transactions of the Royal Society of London, Series B, Vol.265, 233-297. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
