The BGS Lexicon of Named Rock Units — Result Details

Zechstein Group

Computer Code: ZG Preferred Map Code: ZG
Status Code: Full
Age range: Guadalupian Epoch (PUG) — Lopingian Epoch (PUL)
Lithological Description: Cyclical succession of marine dolomite, limestone, evaporites, red mudstone and siltstone.
Definition of Lower Boundary: Unconformable base with the Kupferschiefer or Marl Slate (or younger strata) resting on the Rotliegend Group or Carboniferous strata.
Definition of Upper Boundary: Gradational boundary taken at the base of the Sherwood Sandstone Group onshore and the base of the Bacton and Heron groups offshore.
Thickness: 1 - 1000m
Geographical Limits: Zechstein basin, Northern England, North Sea, Holland, Germany.
Parent Unit: Not Applicable (-)
Previous Name(s): Permian Marls [Obsolete Name And Code: See Zechstein Group And Belfast Group] (PMLS)
Don Group [Obsolete Name And Code: See ZG] (DON)
Teesside Group [Obsolete Name And Code: See ZG] (TES)
Eskdale Group [Obsolete Name And Code: See ZG] (EKD)
Aislaby Group [Obsolete Name And Code: See ZG] (ALBG)
Staintondale Group [Obsolete Name And Code: See ZG] (STND)
Teeside Group (-4992)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Kirklington NCB borehole, BGS Reference SE38SW/38. [Powell, Cooper and Benfield, 1992]. 
Reference(s):
Powell, J H, Cooper, A H C and Benfield, A C. 1992. Geology of the country around Thirsk. Memoir of the British Geological Survey, Sheet 52 (England and Wales). 
Johnson, H, Warrington, G and Stoker, S J. 1994. Permian and Triassic of the Southern North Sea. In Knox, R W O'B and Cordey, W G (editors), Lithostratigraphic nomenclature of the UK North Sea. [Nottingham: British Geological Survey.] 
Smith, D B, Brunstrom, R G W, Manning, D I, Simpson, S and Shotton, F W. 1974. A correlation of Permian rocks in the British Isles. Geological Society of London Special Report No. 5. 
Smith, D B, 1994. Geology of the country around Sunderland. Memoir of the British Geological Survey, Sheet 21, (England and Wales). 
Cameron, T D J. 1993. 4 Triassic and Permian of the central and northern North Sea, in Knox, R W O'B and Cordey, W G, (eds.) Lithostratigraphic nomenclature of the UK North Sea. British Geological Survey, Nottingham. 
Smith, D B, Harwood, G M, Pattison, J and Pettigrew, T H. 1986. A revised nomenclature for Upper Permian strata in eastern England. 9-17 in Harwood, G M and Smith, D B (editors). The English Zechstein and Related Topics. Geological Society Special Publication No.22. 
Deegan, C E and Scull, B J. 1977. A standard lithostratigraphic nomenclature for the Central and Northern North Sea. Report of the Institute of Geological Sciences, 77/25; NPD Bulletin No.1. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E162 E021 E010 E026 E015 E027 E132 E148