The BGS Lexicon of Named Rock Units — Result Details

Tyninghame Formation

Computer Code: TYN Preferred Map Code: TYN
Status Code: Full
Age range: Tournaisian Stage (CT) — Tournaisian Stage (CT)
Lithological Description: Pale sandstones interbedded with grey, green, purple or brown siltstones and mudstones. Bands of dolomite/limestone (cementstone) and nodular carbonate (cornstone) are distributed irregularly through the sequence.
Definition of Lower Boundary: The base is drawn at the incoming of significant thicknesses of grey mudstone and cementstone in or above a sandstone-cornstone sequence.
Definition of Upper Boundary: The top is drawn at the incoming of common seatrock, coal, sideritic ironstone, black mudstone or marine bands; or where the sequence becomes dominated by volcanic rocks.
Thickness: 800m estimated in Edinburgh, 384m+ at East Linton; 209m at Birnieknowes and 263m at Spilmersford.
Geographical Limits: Lothians. Berwickshire.
Parent Unit: Inverclyde Group (INV)
Previous Name(s): Cementstone Group (*172)
Alternative Name(s): Ballagan Formation
Reference Section  On the coast at West Barns 
Reference Section  On the coast between Tyninghame and North Berwick, Davies and others, 1986; McAdam and Clarkson, 1986. 
Type Area  Spilmersford Borehole, NT46SE/73, between 658.72 and 921.71m depth. 
Reference Section  On the coast at Cockburnspath 
Chisholm, J I, MacAdam, A D, Brand, P J. 1989. Lithostratigraphical classification of Upper Devonian and Lower Carboniferous rocks in the Lothians. British Geological Survey Technical Report, WA/89/26. 
Browne, M A E, Dean, M T, Hall, I H S, McAdam, A D, Monro, S K and Chisholm, J I. 1996. A lithostratigraphical framework for the Carboniferous rocks of the Midland Valley of Scotland. British Geological Survey Technical Report, WA/96/29. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S033 S033 S034 S023 S024 S032 S032