The BGS Lexicon of Named Rock Units — Result Details
Redcliffe Sandstone Member
| Computer Code: | RESA | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Triassic Period (T) — Triassic Period (T) | ||
| Lithological Description: | Sandstone, distinctive fine- to medium-grained, deep red, calcareous and ferruginous. Commonly decalcified at shallow depths below the surface, giving rise to an uncemented sand. | ||
| Definition of Lower Boundary: | Unconformable, at the abrupt base of the red sandstones of the Redcliffe Sandstone Member overlying sandstones and mudstones of Late Carboniferous age. | ||
| Definition of Upper Boundary: | Conformable and gradational, with interdigitation between red sandstone of the Redcliffe Sandstone and reddish-brown mudstone of the Sidmouth Mudstone Formation (undivided). | ||
| Thickness: | Up to 65m (Kellaway and Welch, 1993). | ||
| Geographical Limits: | Crops out in the Bristol area between Bedminster and Winterbourne (Barton et al., 2002). | ||
| Parent Unit: | Sidmouth Mudstone Formation (SIM) | ||
| Previous Name(s): | Redcliffe Sandstone [Obsolete Name and Code: Use RESA]
(-490)
Redcliffe Sandstone Formation [Obsolete Name and Code: Use RESA] (-1788) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Cliffs along the River Avon, Redcliffe and Southville districts, central Bristol Kellaway and Welch (1993). | ||
| Reference(s): | |||
| Kellaway, G A and Welch, F B A. 1993. Geology of the Bristol district. Memoir of the British Geological Survey Special Sheet [England and Wales]. | |||
| 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. | |||
| Barton, C M, Strange, P J, Royse, K R, and Farrant, A R. 2002. Geology of the Bristol District - a brief explanation of the geological map. Sheet explanation of the British Geological Survey. 1:50 000 Sheet 264 Bristol [England and Wales]. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E264 | |||