The BGS Lexicon of Named Rock Units — Result Details
Mathon Sand and Gravel Formation
Computer Code: | MASG | Preferred Map Code: | notEntered |
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Status Code: | Full | ||
Age range: | Anglian Stage (QA) — Anglian Stage (QA) | ||
Lithological Description: | Basal gravels overlain by red cross-bedded sands with coal debris on foresets; locally overlain by an upper gravel. Gravels consist:- 50% local pebbles, 50% exotic pebbles, including c.25% Bunter pebbles.Sand and gravel, locally with lenses of silt, clay or peat -[Generic description]. | ||
Definition of Lower Boundary: | Placed at base of gravels where they rest on bedrock or the Bray Silts. | ||
Definition of Upper Boundary: | Placed at top of sand or gravel, where overlain by White House Silts or Coddington Till. | ||
Thickness: | Up to c.10 metres. | ||
Geographical Limits: | Cradley Valley and Glynch Brook. | ||
Parent Unit: | Severn and Avon Catchments Subgroup (SACA) | ||
Previous Name(s): | Mathon Sand and Gravel [Obsolete Name and Code: Use MASG]
(-4179)
Mathon Beds [Obsolete Name and Code: Use MASG] (-2311) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Area | Vicinity of Mathon, Hereford and Worcester where there are current and former gravel pits in the deposits. | ||
Reference Section | The Brays Pit, Mathon. | ||
Reference Section | Warner's Farm Pit, Mathon, (section now obscured). | ||
Reference(s): | |||
McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. | |||
Barclay, W J, Brandon, A, Ellison, R A and Moorlock, B S P. 1992. A Middle Pleistocene palaeovalley-fill west of the Malvern Hills. Journal of the Geological Society of London, Vol. 149, 75-92. | |||
Hey, R W, 1959. Pleistocene deposits on the west side of the Malvern Hills. Geological Magazine, Vol.96, p.403-417. | |||
Morris, L A, 1974. "In" Adlam, B H, (Editor). Worcester and its region. Field studies in the former county of Worcestershire. Worcester Geographical Association, p.87-96. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E199 E216 |