The BGS Lexicon of Named Rock Units — Result Details
Northwich Halite Member
| Computer Code: | NWHF | Preferred Map Code: | NwH |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Anisian Age (TA) — Anisian Age (TA) | ||
| Lithological Description: | Halite with partings of mudstone. | ||
| Definition of Lower Boundary: | Conformable at the base of the lowest substantial halite in the member. | ||
| Definition of Upper Boundary: | Conformable at the top of the highest substantial halite in this member. | ||
| Thickness: | To 286 m. | ||
| Geographical Limits: | Cheshire Basin. | ||
| Parent Unit: | Sidmouth Mudstone Formation (SIM) | ||
| Previous Name(s): | Lower Keuper Saliferous Beds [Obsolete Name And Code: Use NWHF]
(LKSB)
Keuper Saliferous Beds [Obsolete Name And Code: See DHT, NWHF, WHT] (KSB) Northwich Halite Formation [Obsolete Name and Code: Use NWHF] (-3591) Keuper Saliferous Beds, Lower [Obsolete Name and Code: Use NWHF] (-4232) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | Meadow Bank Mine, Winsford, and boreholes in the Winsford district. | ||
| Reference Section | Specimens at BGS, Keyworth. Wilkesley Borehole (BGS) SJ64SW/7, from 3541 ft 7 in to 4166 ft 8 in. | ||
| Reference(s): | |||
| Warrington, G, Audley-Charles, M G, Elliott, R E, Evans, W B, Ivimey-Cook, H C, Kent, P E, Robinson, P L, Shotton, F W and Taylor, F M. 1980. A correlation of the Triassic rocks in the British Isles. Special Report of the Geological Society of London, No.13. | |||
| Howard, A S, Warrington, G, Ambrose, K, and Rees, J G. 2008. A formational framework for the Mercia Mudstone Group (Triassic) of England and Wales. British Geological Survey Research Report, RR/08/04. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E109 E123 | |||