The BGS Lexicon of Named Rock Units — Result Details

Sneaton (Halite) Formation

Computer Code: SNH Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Guadalupian Epoch (PUG) — Lopingian Epoch (PUL)
Lithological Description: Variously almost pure halite, halite with anhydrite laminae, halite with potash minerals and halite with abundant fine-grained red clastic material.
Definition of Lower Boundary: Drawn at base of halite with anhydrite laminae where it rests on anhydrite of the Sherburn Formation.
Definition of Upper Boundary: Drawn at upward passage from halite to red siltstones of the Sleights Formation or to the Roxby Formation.
Thickness: Approx. 55 metres, (thins westwards).
Geographical Limits: Eastern England. (Yorkshire Province).
Parent Unit: Zechstein Group (ZG)
Previous Name(s): Upper Halite (UPHL)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Sneaton (E4) Borehole, Sneaton, Nr. Whitby, North Yorkshire. 
Reference(s):
Smith, D B, 1971. Possible displacive halite in the Upper Permian Evaporite Group of north-east Yorkshire. Sedimentology, Vol.17, 221-232. 
Pattison, J, 1986. A revised nomenclature for Upper Permian strata in eastern England. "In" Harwood, G M and Smith, D B. (Editors). The English Zechstein and Related Topics. Geological Society Special Publication No.22, 9-17. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E043