The BGS Lexicon of Named Rock Units — Result Details

Eyemouth Volcanic Formation

Computer Code: EYVO Preferred Map Code: EYVO
Status Code: Full
Age range: Early Devonian Epoch (DL) — Early Devonian Epoch (DL)
Lithological Description: Olivine-phyric basaltic lavas, basaltic andesites and andesites with interbeds of tuff and tuffaceous rocks, and rare dacite or rhyodacite.
Definition of Lower Boundary: At White Heugh, south of St Abb's Head, where the lavas overlie the 'Bell Hill sediments' of the Great Conglomerate Formation and north-west of Coldingham, unconformably overlying Silurian strata.
Definition of Upper Boundary: The top of the basaltic to andesitic lavas, below the Auchencrow Burn Sandstone Formation.
Thickness: From 500 to 600 m thick.
Geographical Limits: Between Eyemouth and St Abb's Head.
Parent Unit: Reston Group (REST)
Previous Name(s): Lower Devonian [Lower Old Red Sandstone] Lavas (-3396)
Alternative Name(s): none recorded or not applicable
Partial Type Section  Along the coastline from Pettico Wick to St Abb's Harbour. Stephenson, D. 1999. 
Stephenson, D. 1999. Pettico Wick to St Abb's Harbour, 552 - 556 in Caledonian Igneous Rocks of Great Britain. (Geological Conservation Review Series No. 17). Stephenson, D and six others (editors). [Peterborough: Joint Nature Conservation Committee.] 
Greig, D C. 1988. Geology of the Eyemouth district. Memoir of the British Geological Survey, Sheet 34 (Scotland). 
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: