The BGS Lexicon of Named Rock Units — Result Details

Anstruther Formation

Computer Code: ARBS Preferred Map Code: ARBS
Status Code: Full
Age range: Asbian Substage (CR) — Asbian Substage (CR)
Lithological Description: Mudstone, siltstone and sandstone in thin cycles with thin beds of limestone, dolomite and coal. Predominantly non-marine origin.
Definition of Lower Boundary: Not known at outcrop; would be taken at the lithological change from the sandstone dominated sequences of the underlying Fife Ness Formation into relatively mudstone/siltstone-rich cyclical deposits.
Definition of Upper Boundary: The conformable top of the Formation lies in a transitional sequence to the Pittenweem Formation and is taken at the base of the Cuniger Rock Marine Band.
Thickness: Maximum thickness exceeds 810m in east Fife
Geographical Limits: East Fife.
Parent Unit: Strathclyde Group (SYG)
Previous Name(s): Anstruther Beds (-3172)
Alternative Name(s): none recorded or not applicable
Partial Type Section  Anstruther Wester on the Fife coast. 
Partial Type Section  Cuniger Rock on the Fife coast. 
Partial Type Section  Billow Ness on the Fife coast. 
Browne, M A E, 1986. The Classification of the Lower Carboniferous in Fife and Lothian. Scottish Journal of Geology, Vol.22, p.422-425. 
Forsyth, I H and Chisholm, J I, 1977. The geology of east Fife. Memoirs of the Geological Survey of Great Britain. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S040 S032 S032 S049 S041