The BGS Lexicon of Named Rock Units — Result Details

Woodland 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 (-1299)
Haldon Sands Formation (-4417)
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):
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. 
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. 
Ussher, W A E, 1913. Geology of the country around Newton Abbot. Memoir of the British Geological Survey, Sheet 339. (England and Wales). 
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). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable