The BGS Lexicon of Named Rock Units — Result Details

Beacon Hill Flags

Computer Code: BHF Preferred Map Code: notEntered
Status Code: Index Level
Age range: Marsdenian Substage (CZ) — Marsdenian Substage (CZ)
Lithological Description: Thinly laminated flaggy sandstones.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: c.10m
Geographical Limits: West Yorkshire [Beacon Hill, south of Ripponden, Yorkshire].
Parent Unit: Millstone Grit Group [See Also MIGR] (MG)
Previous Name(s): Beacon Hill Tuff Formation [Obsolete Name and Code: Use BHF, CMBH] (-3212)
Beaconsfield Flags (-695)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Wray, D A et al, 1930. Geology of the country around Huddersfield and Halifax. Memoir of the Geological Survey of Great Britain. 
Green, A H and others, 1878. Yorkshire Coalfield. Memoirs of the Geological Survey of Great Britain, p.27-33. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E086 E077