The BGS Lexicon of Named Rock Units — Result Details

Dailly Group [Obsolete Name And Code: Use DAI Or STNG Depending On Age]

Computer Code: DLY Preferred Map Code: notEntered
Status Code: Index Level
Age range: Llandovery Epoch (SL) — Wenlock Epoch (SW)
Lithological Description: Flaggy greywacke and shales, with hard, flaggy grit seams and limestone ribs. Coarse conglomerates and grits occur at the top.
Definition of Lower Boundary: Drawn at base of purple shales and mudstone of the Penkill Group where it rests conformably on grits of the Camregan Group.
Definition of Upper Boundary: Drawn at unconformable upward passage from grits and conglomerate of the Straiton Group to redsandstone and conglomerate of the Lower Old Red Sandstone.
Thickness: Approx. 780 metres.
Geographical Limits: Strathclyde, Scotland.
Parent Unit: Not Entered (?)
Previous Name(s): Camregan Group [Obsolete Name And Code: Use (Part Of) DLY] (CRGN)
Dailly Series (-3973)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  From near Old Dailly to Straiton, east and east-north-east of Girvan, Strathclyde, Scotland. 
Reference(s):
Jones, O T, 1921. The Valentian Series. Quarterly Journal of the Geological Society, Vol.77, p.154-157. 
Greig, D C. 1971. British Regional Geology: the South of Scotland (3rd Edition). (Edinburgh: HMSO for the Institute of Geological Sciences.) 
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. 
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable