The BGS Lexicon of Named Rock Units — Result Details

Nar Valley Freshwater Beds

Computer Code: NVFB Preferred Map Code: notEntered
Status Code: Index Level
Age range: Hoxnian Stage (QX) — Hoxnian Stage (QX)
Lithological Description: Peat.
Definition of Lower Boundary: Oversteps onto a variety of older rocks with marked unconformity.
Definition of Upper Boundary: Overlain by the clays of the Nar Clay Formation (NACL).
Thickness: none recorded or not applicable
Geographical Limits: The Nar Valley, Norfolk.
Parent Unit: Nar Clay Formation (NACL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable