The BGS Lexicon of Named Rock Units — Result Details

Raised Tidal Flat Deposits Of Holocene Age, 1

Computer Code: RTFF1 Preferred Map Code: symb
Status Code: Index Level
Age range: Holocene Epoch (QH) — Holocene Epoch (QH)
Lithological Description: Pale yellowish brown sandy clayey silt (loam) or grey sandy clay, locally with lenses of gravel, peat and disseminated organic material.
Definition of Lower Boundary: Sharp unconformable, generally planar boundary with older superficial deposits, commonly till. Locally, rests unconformably on clast-supported gravel of raised beaches.
Definition of Upper Boundary: Ground surface or gradational undulating boundary with younger superficial deposits such as peat and blown sand. Locally,a sharp unconformable contact with clast-supported gravel of raised beaches.
Thickness: <10m
Geographical Limits: Cumbria.
Parent Unit: Not Applicable (-)
Previous Name(s): Raised Tidal Flat Deposits Of Flandrian Age, 1 (-5254)
First Terrace Of Warp (-1798)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Southern shores of the Solway Firth between Silloth and Rockcliffe, Cumbria. Dixon et al., 1926. 
Reference(s):
Dixon, E E L, Maden J, Trotter, F M, Hollingworth, M A and Tonks, L H. 1926. The geology of the Carlisle, Longtown and Silloth District. Memoir of the Geological Survey of England and Wales. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E017