The BGS Lexicon of Named Rock Units — Result Details

St Abbs Formation

Computer Code: SBB Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Marine Isotope Stage 2 (QMIS002) — Marine Isotope Stage 2 (QMIS002)
Lithological Description: Mud, locally silty, soft to stiff, red-grey to grey-brown, with sporadically distributed pebbles up to several centimetres diameter.
Definition of Lower Boundary: Base of formation lies unconformably on the surface of the Wee Bankie Formation, or directly on rockhead.
Definition of Upper Boundary: Top of unit unconformably overlain by younger sediments.
Thickness: c.6 metres. Generally <10 metres but occurs locally up to 20 metres in thickness.
Geographical Limits: Not defined.
Parent Unit: Reaper Glacigenic Group (REAP)
Previous Name(s): St Abbs Beds (-4315)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Thomson, M E, and Eden, R A. 1977. Quaternary deposits of the central North Sea, 3. The Quaternary sequence in the west-central North Sea. Report of the Institute of Geological Sciences, No. 77/12. 
Stoker, M S, Balson, P S, Long, D, and Tappin, D R. 2011. An overview of the lithostratigraphical framework for the Quaternary deposits on the United Kingdom continental shelf. British Geological Survey Research Report, RR/11/03. 48pp. 
Stoker, M S, Long, D, and Fyfe, J A. 1985. A revised Quaternary stratigraphy for the central North Sea. Report of the British Geological Survey, Vol. 17, No. 2. 
Gatliff, R W, Richards, P C, Smith, K, Graham, C C, McCormac, M, Smith, N J P, Long, D, Cameron, T D J, Evans, D, Stevenson, A G, Bulat, J, and Ritchie, J D. 1994. United Kingdom offshore regional report: the geology of the central North Sea. (London: HMSO for the British Geological Survey.) 
Cameron, T D J, and Holmes, R. 1999. The Continental Shelf. 125-139 in A revised correlation of Quaternary deposits in the British Isles. Bowen, D Q (editor). Special Report of the Geological Society of London, No. 23. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable