The BGS Lexicon of Named Rock Units — Result Details

Stallion Hill Formation

Computer Code: SLN Preferred Map Code: Sln
Status Code: Pending Upgrade
Age range: Westphalian Stage (CW) — Westphalian Stage (CW)
Lithological Description: Purplish-grey to green-grey fine- to coarse-grained cross-bedded sandstone; basal conglomerate contains cobbles of Silurian and igneous, possibly Malvernian rocks.
Definition of Lower Boundary: Unconformable on Raglan Mudstone (Siluro-Devonian).
Definition of Upper Boundary: Overlain by Westphalian D Coal Measures.
Thickness: 80m. Thinning to 0 within 2km to northwest; cut out by faulting within 0.5km to east of type locality.
Geographical Limits: Not defined.
Parent Unit: Warwickshire Group (WAWK)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Trenchard Group
Stratotypes:
Type Area  Stallion Hill, near Newent, Glos, Sheet 216. 
Reference(s):
Ellison, R A. 1986. Geological Notes and Local Details for 1:10,000 Sheet SO72SW (Taynton): Part of 1:50,000 Sheet 216 (Tewkesbury) and Sheet 234 (Gloucester). Memoir of the British Geological Survey. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E216