The BGS Lexicon of Named Rock Units — Result Details

Loch An Uach Member

Computer Code: TCLU Preferred Map Code: notEntered
Status Code: Full
Age range: Tonian Period (AT) — Tonian Period (AT)
Lithological Description: Fine -medium red sandstone, cross-bedded, locally contorted.
Definition of Lower Boundary: Sharp, erosive contact with the underlying Brochel member (TCBL) - Diabaig Formation (TCD).
Definition of Upper Boundary: Overlain by remainder of Applecross Formation (TCA).
Thickness: c. 300 m.
Geographical Limits: Inner Hebrides: Raasay.
Parent Unit: Applecross Formation (TCA)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
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:
S081