The BGS Lexicon of Named Rock Units — Result Details
Staddon Formation
Computer Code: | STG | Preferred Map Code: | StG |
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Status Code: | Full | ||
Age range: | Emsian Age (DE) — Emsian Age (DE) | ||
Lithological Description: | Medium to thick beds (1-4m) of fine- to medium-grained sandstone, thickening and coarsening upwards with thin interbedded grey mudstone and siltstone. | ||
Definition of Lower Boundary: | Faulted out: lower part of sequence adjacent to fault is transitional to slaty mudstone, thin sandstone beds and sporadic thin limestone beds of the Bovisand Formation. | ||
Definition of Upper Boundary: | Faulted out: Staddon Formation thrust over Saltash Formation. | ||
Thickness: | c.500m | ||
Geographical Limits: | Staddon Grit Formation mapped on Plymouth (348) Sheet. Known to occur between north Cornwall coast at Trenance Point and south Devon coast south of Berry Head. | ||
Parent Unit: | Meadfoot Group (MDT) | ||
Previous Name(s): | Meadfoot Beds And Staddon Grit [Obsolete Name And Code: Use MDT And STG]
(MFSG)
Staddon Grit Of Trenance Point [Obsolete Name And Code: Use STG] (SGTP) Staddon Grits [Obsolete Name and Code: Use STG] (-2455) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Reference Section | Cliff section. Sandway Cellars to Redding Point. | ||
Type Section | Cliff section below Staddon Heights. Bovisand Bay to Jennycliff Bay. | ||
Reference(s): | |||
Ussher, W A E. 1891. The Devonian Rocks as described by De La Beche, etc. Transactions of the Royal Geological Society of Cornwall, Vol.II, 273-326. | |||
Leveridge B E, Holder, M T, Goode, A J J, Scrivener R C, Jones N S and Merriman, R J. 2002. Geology of the Plymouth and south-east Cornwall area. Memoir of the British Geological Survey, Sheet 348 (England and Wales). | |||
Waters, C N, Smith, K, Hopson, P M, Wilson, D, Bridge, D M, Carney, J N, Cooper, A H, Crofts, R G, Ellison, R A, Mathers, S J, Moorlock, B S P, Scrivener, R C, McMillan, A A, Ambrose, K, Barclay, W J, and Barron, A J M. 2007. Stratigraphical Chart of the United Kingdom: Southern Britain. British Geological Survey, 1 poster. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E335 E336 E348 E346 E349 E347 E350 |