The BGS Lexicon of Named Rock Units — Result Details

Slattadale Member

Computer Code: TCD1 Preferred Map Code: notEntered
Status Code: Full
Age range: Tonian Period (AT) — Tonian Period (AT)
Lithological Description: Breccio-conglomerate, coarse sandstone; tabular red sandstone in upper part.
Definition of Lower Boundary: Unconformable upon Lewisian Gneiss (L).
Definition of Upper Boundary: Conformably overlain by the Horrisdale Waterfalls Member (TCD2).
Thickness: 0-100 m.
Geographical Limits: Northwest Highlands, Diabaig to Gairloch.
Parent Unit: Diabaig Formation (TCD)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Diabaig: [NG 797 601 - NG 793 603]. 
Reference(s):
Stewart, A D. 2002. The later Proterozoic Torridonian rocks of Scotland: their sedimentology, geochemistry and origin. Geological Society Memoir. Vol. 24. (The Geological Society.) 
Krabbendam, M. 2021. A stratigraphic framework for the early Neoproterozoic successions of the Northern Highlands of Scotland. UK Stratigraphic Framework Series. British Geological Survey Open Report, OR/21/072. 86pp. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S091