The BGS Lexicon of Named Rock Units — Result Details

Aberdeen Ground Formation

Computer Code: ANG Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Marine Isotope Stage 100 (QMIS100) — Marine Isotope Stage 13 (QMIS013)
Lithological Description: Hard, heavily overconsolidated, commonly fissured, grey clay. Sporadic shell fragments and plant remains. Lenses and laminae of silt and fine-grained sand increasing in content towards the west. [Generic description: 1:50k map margins].
Definition of Lower Boundary: Eroded by pre-Ling Bank and pre-Coal Pit and Forth Formation erosive phases. Base not seen in most seismic sections except near the type borehole. Further to the west, the formation lies on Tertiary and occurs at outcrop.
Definition of Upper Boundary: See lower boundary.
Thickness: 72.5 metres : maximum of around 130 metres in central part of Devil's Hole area.
Geographical Limits: Not defined.
Parent Unit: Zulu Group (ZULU)
Alternative Name(s): none recorded or not applicable
none recorded or not applicable
Holmes, R. 1977. Quaternary deposits of the central North Sea 5. The Quaternary geology of the UK sector of the North Sea between 56° and 58° N. Report of the Institute of Geological Sciences, No. 77/14. 
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.) 
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. 
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: