The BGS Lexicon of Named Rock Units — Result Details
Thirlstane Beds
Computer Code: | THSD | Preferred Map Code: | THSD |
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Status Code: | Full | ||
Age range: | Holkerian Substage (CQ) — Holkerian Substage (CQ) | ||
Lithological Description: | Fine-grained, well sorted, pale grey quartz sandstone characterised by large-scale cross-bedding and soft sediment liquefaction structures. | ||
Definition of Lower Boundary: | Sharp base on marine mudstones of the Powillimount Sandstone Formation. | ||
Definition of Upper Boundary: | The Thirlstane Sandstone Member lies conformably under the Arbigland Limestone Formation. | ||
Thickness: | 25m | ||
Geographical Limits: | Powillimount shore, Southerness, Kirkcudbrightshire, south-western Scotland (Southern Uplands). | ||
Parent Unit: | Powillimount Sandstone Member (POSD) | ||
Previous Name(s): | Thirlstane Sandstone Member [Obsolete Name and Code: Use THSD]
(-4925)
Thirlstane Sandstone Formation [Obsolete Name and Code: Use THSD] (-1862) Thirlstane Sandstone [Obsolete: Use THSD] (THI) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Coastal section 500m ENE of Powillimount Farm, Southerness, Kirkcudbrightshire. | ||
Reference(s): | |||
Craig, G Y. 1956. The Lower Carboniferous outlier of Kirkbean, Kirkcudbrightshire. Transactions of the Geological Society of Glasgow, Vol. 22, 113 - 132. | |||
Deegan, C E. 1970. The petrology and sedimentology of the Lower Carboniferous rocks between White Port and Kirkbean, Kirkcudbrightshire. University of Wales, Aberystwyth PhD Thesis (unpublished). | |||
Ord, D M, Clemmy, H and Leeder, M R, 1988. Interaction between faulting and sedimentation during Dinantian extension of the Solway basin. Journal of the Geological Society of London, 145, 249-259. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S006 S005 S006 |