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.
Remains of the prehistoric shark †Cladodus elegans Newberry & Worthen, 1870 (braincase and a tooth) have been found in the Lower Limestone Formation.[4]
^"Clackmannan Group". The BGS Lexicon of Named Rock Units. British Geological Society. Retrieved 27 February 2014.
^British Geological Survey Research Report RR/07/01: Lithostratigraphical framework for Carboniferous successions of Great Britain (Onshore) Waters, C.N. et al 2007
^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, doi:10.1111/j.1475-4983.2006.00633.x
March 04, 2023
clackmannan, group, name, given, suite, rocks, late, dinantian, namurian, laid, down, during, carboniferous, period, midland, valley, scotland, stratigraphic, range, carboniferousfossil, trail, giant, myriapod, limestone, coal, formation, typegroupsub, unitslo. 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 Clackmannan GroupStratigraphic range CarboniferousFossil trail of giant Myriapod Limestone Coal Formation Clackmannan GroupTypeGroupSub unitsLower Limestone Formation Limestone Coal Formation Upper Limestone Formation Passage FormationUnderliesCoal Measures GroupOverliesStrathclyde GroupLithologyPrimarysandstones mudstonesOtherlimestones siltstones ironstones coal seatrocks fireclayLocationRegionCentral Lowlands of ScotlandCountryUnited KingdomType sectionNamed forClackmannan town Contents 1 Description 2 Paleontology 3 See also 4 ReferencesDescription EditThe 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 EditRemains of the prehistoric shark Cladodus elegans Newberry amp Worthen 1870 braincase and a tooth have been found in the Lower Limestone Formation 4 See also Edit Geology portalFossil GroveReferences Edit Clackmannan Group The BGS Lexicon of Named Rock Units British Geological Society Retrieved 27 February 2014 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 doi 10 1111 j 1475 4983 2006 00633 x Retrieved from https en wikipedia org w index php title Clackmannan Group amp oldid 1078045148, wikipedia, wiki, book, books, library,
