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):
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom. 
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. 
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.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable