The BGS Lexicon of Named Rock Units — Result Details

Rosneath Conglomerate Formation

Computer Code: RON Preferred Map Code: RON
Status Code: Pending Upgrade
Age range: Early Devonian Epoch (DL) — Early Devonian Epoch (DL)
Lithological Description: A conglomerate with clasts up to 40 cm in size of quartz, quartzite, metamorphic, igneous and volcanic rocks with minor sandstone and pebbly sandstone interbeds.
Definition of Lower Boundary: Unconformable upon the Dalradian basement.
Definition of Upper Boundary: Not exposed, presumed to pass upwards and laterally into the Stockiemuir Sandstone Formation.
Thickness: In excess of 1000 m thick.
Geographical Limits: Rosneath Point to Helensburgh and Southern Loch Lomond, sheets 30W, 38W.
Parent Unit: Stratheden Group (SAG)
Previous Name(s): Upper Old Red Sandstone (UORS)
Rosneath Conglomerate (-2398)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  West of Rosneath Point, Sheet 30W. 
Reference(s):
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. 
Paterson, I B and Hall, I H S, 1986. Lithostratigraphy of the late Devonian and early Carboniferous rocks in the Midland Valley of Scotland. British Geological Survey Report, 18/3. 
Paterson, I B, Hall, I H S & Stephenson, D. 1990. Geology of the Greenock district: Memoir for 1:50000 geological sheet 30W and part of sheet 29E (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S030 S038