The BGS Lexicon of Named Rock Units — Result Details
Woodlands Sands Member
| Computer Code: | WLSS | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Albian Age (KA) — Albian Age (KA) | ||
| Lithological Description: | Glauconitic, clayey sandstone and shell beds containing layers of siliceous concretions. Very locally developed thin shelly limestones. Coral-rich bed at base, locally replaced by coarse gravel. Bands of quartz gravel are locally developed. | ||
| Definition of Lower Boundary: | The contact with the underlying Telegraph Hill Sands Member, marked by the upward facies-change from finer-grained, clay-free sandstone (Telegraph Hill Sands) to coarser, less well-sorted, clay-rich sandstone (Woodlands Sands). A coral-rich horizon (Haldon Coral Bed) generally marks this boundary. Where the Telegraph Hill Sands are absent, the Woodlands Sands Member unconformably overlies Devonian and Carboniferous strata, and a coarse gravel marks the basal part of the Woodlands Sands Member. | ||
| Definition of Upper Boundary: | Contact with the overlying Ashcombe Gravels Member, marked by the upward facies-change to interbedded sandstone and gravel. | ||
| Thickness: | 4.14m. | ||
| Geographical Limits: | Haldon Hills, Devon, Sheet 339. | ||
| Parent Unit: | Upper Greensand Formation (UGS) | ||
| Previous Name(s): | Haldon Sands Formation [Obsolete Name and Code: Use ACGR, CUSC, UGSD, WLSS]
(-4417)
Haldon Sands [Obsolete Name and Code: Use UGSD, ACGR, CUSC, THSS, WLSS] (-1299) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Temporary road cutting at Woodlands Goyle [SX 902 840], at the north end of Great Haldon, Selwood et al. (1984). | ||
| Reference(s): | |||
| Ussher, W A E. 1913. Geology of the country around Newton Abbot. Memoir of the British Geological Survey, Sheet 339. (England and Wales). | |||
| Hamblin, R J O and Wood, C J. 1976. The Cretaceous (Albian-Cenomanian) stratigraphy of the Haldon Hills, south Devon, England. Newsletters on Stratigraphy, Vol.4, 135-149. | |||
| Selwood, E B, Edwards, R A, Simpson, S, Chesher, J A, Hamblin, R J O, Henson, M R, Riddolls, B W and Waters, R A. 1984. Geology of the countryside around Newton Abbot. Memoir of the British Geological Survey, Sheet 339 (England and Wales). | |||
| Jukes-Browne, A J and Hill, W. 1900. The Cretaceous Rocks of Britain. 1. Gault and Upper Greensand. Memoir of the Geological Survey of Great Britain. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||