The BGS Lexicon of Named Rock Units — Result Details

Fitzroy Member

Computer Code: FHF Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Soft clay and silty clay often with black sulphide laminae and dropstones: significantly less consolidated than underlying sediments.
Definition of Lower Boundary: Basal erosion surface dissects most quaternary formations in the area.
Definition of Upper Boundary: Upper surface is irregular, overlain by Whitehorn Member of the Forth Formation.
Thickness: 49.5 metres - variable - as the infill of erosive features.
Geographical Limits: Not defined.
Parent Unit: Forth Formation (FH)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
none recorded or not applicable
Holmes, R. 1977. Quaternary deposits of the central North Sea 5. The Quaternary geology of the UK sector of the North Sea between 56° and 58° N. Report of the Institute of Geological Sciences, No. 77/14. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable