Английская Википедия:Clackmannan Group
Шаблон:Infobox rockunit The Clackmannan Group is the name given to a suite of rocks of late Dinantian and Namurian age laid down during the Carboniferous period in the Midland Valley of Scotland.[1]
Description
The Group comprises a lower unit of coarse sandstones, siltstones, mudstone, and limestones with thin coals and ironstones known as the Lower Limestone Formation, an overlying sequence of similar rocks known as the Limestone Coal Formation, then an Upper Limestone Formation and at its top the sandstones of the Passage Formation. This last formation also includes fireclays, siltstones, mudstones, ironstones, coal and seatrocks.
The Clackmannan Group conformably overlays the rocks of the Strathclyde Group and underlays the Coal Measures, this latter boundary also being conformable.[2][3]
Paleontology
Remains of the prehistoric shark †Cladodus elegans Newberry & Worthen, 1870 (braincase and a tooth) have been found in the Lower Limestone Formation.[4]
See also
References
- ↑ Шаблон:Cite web
- ↑ British Geological Survey Research Report RR/07/01: Lithostratigraphical framework for Carboniferous successions of Great Britain (Onshore) Waters, C.N. et al 2007
- ↑ British Geological Survey 1:50,0000 scale geological map sheet (Scotland) 23W Hamilton
- ↑ The Braincase and Jaws of Cladodus from the Lower Carboniferous of Scotland. Michal Ginter and John G. Maisey, Palaeontology, March 2007, Volume 50, Issue 2, pages 305–322, Шаблон:Doi
- Английская Википедия
- Geological groups of the United Kingdom
- Geologic formations of Scotland
- Fossiliferous stratigraphic units of the United Kingdom
- Carboniferous System of Europe
- Carboniferous Scotland
- Carboniferous southern paleotropical deposits
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
