The BGS Lexicon of Named Rock Units — Result Details

Straiton Grit Formation

Computer Code: STGC Preferred Map Code: STGC
Status Code: Full
Age range: Telychian Age (ST) — Telychian Age (ST)
Lithological Description: The lower part is composed of green, thinly-bedded, grits and siltstones, whereas the upper part is composed of red, massive, coarse grits and conglomerates.
Definition of Lower Boundary: Conformable on the Knockgardner Sandstone Formation.
Definition of Upper Boundary: Unconformably overlain by the Inverclyde Group.
Thickness: About 90 m thick.
Geographical Limits: The Girvan to Straiton area of south-west Scotland.
Parent Unit: Straiton Subgroup (STNG)
Previous Name(s): Straiton Grits And Conglomerates (-2456)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Two quarries north of the road from Kirkbride to Knockgardner, Straiton. Cocks and Toghill, 1973. 
Reference(s):
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. 
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. 
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable