The BGS Lexicon of Named Rock Units — Result Details

Delnabo Conglomerate Formation

Computer Code: DLBO Preferred Map Code: DLBO
Status Code: Full
Age range: Pridoli Epoch (SO) — Emsian Age (DE)
Lithological Description: Coarse conglomerate and subsidiary arkosic sandstone, purple-red to red-brown. Coarse breccia and breccio-conglomerate at base locally.
Definition of Lower Boundary: Base rests unconformable upon Dalradian metasedimentary rocks.
Definition of Upper Boundary: Sedimentary transition into Raebeg Sandstone Formation.
Thickness: 250m+
Geographical Limits: The Tomintoul Old Red Sandstone outlier of upper Banffshire - a 50 sq km outlier about 15 by 5km in extent, which is totally separated from other Old Red Sandstone outcrops of the northeast Grampian area.
Parent Unit: Tomintoul Group (TOMI)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Upper crags on the northwest side of the Ailnack Gorge, Delnabo, Tomintoul. Mendum and Stephenson (In prep). 
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