The BGS Lexicon of Named Rock Units — Result Details

River terrace deposits

Computer Code: RTD Preferred Map Code: symb
Status Code: Full
Age range: Quaternary Period (Q) — Quaternary Period (Q)
Lithological Description: River Terrace Deposits consist of alluvium forming one of a series of level surfaces in a stream or river valley, produced as the dissected remnants of earlier abandoned floodplains. Sand and gravel, locally with lenses of silt, clay or peat.
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: Fluvial deposits (FLUV)
Previous Name(s): River terrace (undifferentiated) [Obsolete Name and Code: Use RTD] (-4762)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
McMillan, A A and Powell, J H. 1999. The classification of artificial (man made) ground and natural superficial deposits. British Geological Survey Research Report, RR/99/04. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E021 E078 E003 S032 S055 S055 S056 S066 S084 S030 S039 S096 S076 S083 S083 S084 S093 S093 S096 S052 S052