The BGS Lexicon of Named Rock Units — Result Details

Raised Tidal Flat Deposits, Late Devensian

Computer Code: RTFDD Preferred Map Code: notEntered
Status Code: Index Level
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Silt, clay and fine-grained sand with lenses of gravel.
Definition of Lower Boundary: Sharp, unconformable, generally planar contact on various older superficial deposits, most commonly till.
Definition of Upper Boundary: Ground surface, or sharp, undulating, conformable contact with younger superficial deposits, including peat and blown sand.
Thickness: To 12m
Geographical Limits: Britain to the north of the Humber-Ribble.
Parent Unit: Not Applicable (-)
Previous Name(s): Raised Marine/Beach/Estuarine Deposits Of Late-Glacial Age (-3012)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The southern shore of the Inverness Firth, 2 to 18km northeast of Inverness. Fletcher et al, 1996 
Reference(s):
Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S084