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 at Cockburnspath 
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. 
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. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S033 S033 S034 S023 S024 S032 S032