The BGS Lexicon of Named Rock Units — Result Details

Tobar Fuar Limestone Member

Computer Code: TOFU Preferred Map Code: SYMB
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Crystalline limestone, grey, lenticular, bedded, originally fragmental, commonly with pyrite, locally with tight folding. Calcite segregations in parts. Generally blocky (massive to flaggy).
Definition of Lower Boundary: Lower limit of limestone overlying graphitic semipelitic to pelitic schist of the Badenyon Schist and Limestone Formation.
Definition of Upper Boundary: Upper limit of limestone overlain by semipelite and highly micaceous psammite, slaty, blue-grey, of the Badenyon Schist and Limestone Formation.
Thickness: To c.20m
Geographical Limits: South of the Lecht in the valleys of the Loinherry/Camore Burn, west of the Lecht Road (A939) and east of the road in the valley of the Milltown Burn. Upper Donside, Aberdeenshire.
Parent Unit: Badenyon Schist And Limestone Formation (BSAL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Stream section in lower part of Camore Burn. 
Reference Section  Quarries and sink holes west of A939 by Clachan Lochan. 
Reference(s):
Memoir of the British Geological Survey, Sheet 75, in preparation. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S075