The BGS Lexicon of Named Rock Units — Result Details

Seisdon Sand And Gravel Formation

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 (-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):
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. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable