The BGS Lexicon of Named Rock Units — Result Details

Five Clouds Sandstones

Computer Code: FCS Preferred Map Code: FCS
Status Code: Full
Age range: Marsdenian Substage (CZ) — Marsdenian Substage (CZ)
Lithological Description: Sandstone, pale brown to pink, coarse-grained, thickly bedded and massive, feldspathic, with ferruginous concretions and scattered mudstone clasts, and subordinate mudstone beds.
Definition of Lower Boundary: The lower boundary is taken at the base of a thickly bedded sandstone overlying grey mudstone of undivided Millstone Grit Group in the Upper Hulme Stream Section (SK06SW/14); the precise nature of the boundary is not recorded.
Definition of Upper Boundary: The upper boundary is taken at the base of the first mudstone-dominated succession of undivided Millstone Grit Group overlying the Five Clouds Sandstones; the precise nature of the boundary is not recorded.
Thickness: At least 81.6m (the total thickness has not been proven; 81.6m is the maximum proving for the unit).
Geographical Limits: Danesridge, Staffordshire [SJ 96 65] to Stanley Moor, Derbyshire [SK 04 71].
Parent Unit: Millstone Grit Group [See Also MIGR] (MG)
Previous Name(s): Five Clouds Grit (-4040)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Five Clouds escarpment, Meerbrook, Staffordshire; natural cliff section exposing a partial section of the unit (no further details available). Aitkenhead et al., 1985. 
Partial Type Section  Stream section at Upper Hulme (Staffordshire) exposes 81.6m partial section of the unit (top not proven). Section has been logged and lodged as borehole record SK06SW/14. Aitkenhead et al., 1985 
Reference(s):
Aitkenhead, N, Chisholm, J I and Stevenson, I P. 1985. Geology of the country around Buxton, Leek and Bakewell. Memoir of the British Geological Survey, England and Wales Sheet 111. 
Jones, C M, 1980. Deltaic sedimentation in the Roaches Grit and associated sediments (Namurian R2b) in the south-west Pennines. Proceedings of the Yorkshire Geological Society Vol.43, Pt.1, 39-67. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E111