The BGS Lexicon of Named Rock Units — Result Details

Conglass Sandstone Formation

Computer Code: CGLS Preferred Map Code: CGLS
Status Code: Full
Age range: Pridoli Epoch (SO) — Emsian Age (DE)
Lithological Description: Sandstone, grey to greenish grey, massive to flaggy, few micaceous partings, cross-bedded, with beds of green siltstone. Siltstone also occurs as rip-up clasts in sandstone. Some channels with pebbly base.
Definition of Lower Boundary: Sedimentary junction with Raebeg Sandstone Formation, not exposed.
Definition of Upper Boundary: Not known, upper part of formation removed by erosion.
Thickness: ca 100m
Geographical Limits: Immediately north-east of the Conglass Water in the north-east part of Tomintoul ORS outlier, upper Banffshire; a 50 km2 outlier, 15 x 5 km in extent, that is totally separated from; other ORS outcrops of the north-east Grampian area.
Parent Unit: Tomintoul Group (TOMI)
Previous Name(s): Conglass Conglomerate Formation [Obsolete Name: See CGLS And Revisions] (CONC)
Alternative Name(s): none recorded or not applicable
Type Section  Conglass Water for 1100m above Bridge of Conglass, Tomintoul. Mendum, J R and Stephenson, D, (in preparation). 
Mendum, J R and Stephenson, D. In preparation. Geology of the Glenlivet and Glenbuchat district. Memoir of the British Geological Survey, Sheets 75W and 75E. (Scotland). 
Hinxman, L W, 1896. Explanation of sheet 75, west Aberdeenshire, Banffshire, parts of Elgin and Inverness. Memoirs of the Geological Survey, Scotland. (Edinburgh: HMSO for Geological Survey). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S075 S075