The BGS Lexicon of Named Rock Units — Result Details

Lower Leintwardine Formation and Upper Leintwardine Formation (undifferentiated)

Computer Code: LULT Preferred Map Code: Lut
Status Code: Index Level
Age range: Ludfordian Age (SD) — Ludfordian Age (SD)
Lithological Description: See the Lithology descriptions for the component formations.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Not Entered (?)
Previous Name(s): Leintwardine Beds [Obsolete Name and Code: Use LULT] (-1050)
Leintwardine Group (LTB)
Lower Leintwardine Formation (LLT)
Upper Leintwardine Beds [Obsolete Name and Code: Use LULT, LTB] (-2925)
Lower Leintwardine Beds [Obsolete Name and Code: Use LULT] (-2927)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Holland, C H, Lawson, J D, Walmsley, V G and White, D E. 1980. Ludlow stages. Silurian Series and stages decisions concerning chronostratigraphy. Lethaia, Vol.13, p.238, 268. 
Holland, C H, Lawson, J D and Walmsley, V G, 1963. The Silurian Rocks of the Ludlow District, Shropshire. Bulletin of the British Museum (Natural History), Geology Series. (London: British Museum (Natural History)). 93-171. 
Cocks, L R M, Holland, C H and Rickards, B. 1992. A revised correlation of Silurian rocks in the British Isles. Geological Society of London Special Report. No.21, 32pp. 
Holland, C H, Lawson, J D and Walmsley, V G, 1959. A revised classification of the Ludlovian succession at Ludlow. Nature, London, 1037-1039. 
Lawson, J D and White, D E, 1989. The Ludlow Series in the Ludlow area, 73-90 in A global standard for the Silurian system. Holland, C H and Bassett, M G (editors). (Cardiff: National Museum of Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E181