The BGS Lexicon of Named Rock Units — Result Details

Knockgardner Sandstone Formation

Stratotypes:
Computer Code:	KNG	Preferred Map Code:	KNG
Status Code:	Full
Age range:	Telychian Age (ST) — Telychian Age (ST)
Lithological Description:	Grey-green, thinly-bedded, sandstones and siltstones, with some thick-bedded massive sandstones.
Definition of Lower Boundary:	Conformable on the Blair Shale Formation.
Definition of Upper Boundary:	Conformably overlain by the Straiton Grit Formation.
Thickness:	From 137 m to 180 m thick.
Geographical Limits:	Girvan to Straiton area of south-west Scotland.
Parent Unit:	Straiton Subgroup (STNG)
Previous Name(s):	Knockgardner Formation [Obsolete Name and Code: Use KNG] (-4733) Knockgardner Shales [Obsolete Name and Code: Use KNG] (-349)
Alternative Name(s):	none recorded or not applicable
Type Section	Shiel Burn, about 500 m north-east of Blair. Cocks and Toghill.
Reference(s):
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666.
Cameron, I B, Stone, P and Smellie, J, 1986. Geology of the Country around Girvan. Explanation of 1:50 000 sheet. British Geological Survey, Sheet 7, Scotland.
Floyd, J D and Williams, M. 2003. A revised correlation of Silurian rocks in the Girvan district, SW Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol. 93 (for 2002), 383-92.
Ingham, J K. 1992. Excursion 30: Girvan Foreshore. 396-416 in Lawson, J D and Weedon, D S (editors), Geological Excursions around Glasgow and Girvan. Geological Society of Glasgow.
Cocks, L R M and Toghill, P, 1973. The biostratigraphy of the Silurian rocks of the Girvan District, Scotland. Journal of the Geological Society of London, Vol. 129, 209-243.
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable

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