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International correlation

By C.N. Waters, I.D. Somerville and M.H. Stephenson

Abstract

Globally, the Carboniferous System can be subdivided into two time intervals,\ud associated with a climatic change which produced quite distinct floral and faunal\ud distribution and characteristics of sedimentation (Wagner & Winkler Prins 1991). The\ud early Carboniferous, equivalent to the Mississippian of the U.S.A. and Lower\ud Carboniferous of Russia, was a time of equitable climate in which sea levels were\ud generally high and successions within low latitudes are typically marine. Unobstructed\ud marine communication between the Palaeo-Tethys and Panthalassan shelves (Davydov\ud et al. 2004) allowed marine fauna to have a world-wide distribution, in which\ud latitudinal variations were stronger than longitudinal differences (Ross & Ross 1988).\ud The late Carboniferous, equivalent to the Pennsylvanian of the U.S.A., and Middle and\ud Upper Carboniferous of Russia, is typified by coal-bearing successions that displayed\ud marked latitudinal climatic differentiation associated with the Gondwanan Ice Age. The\ud mid-Carboniferous boundary, which separates the two climatic periods, is associated\ud with widespread regression and on many cratonic areas by the presence of a nonsequence\ud or unconformity. The comparable transition is seen in Western Europe\ud between the Visean and Namurian stages, though this is not a direct time equivalent of\ud the Mississippian – Pennsylvanian boundary (Fig. 2.1). The carbonate-dominated\ud succession of the Visean and terrestrial clastic-dominated succession of the Namurian\ud are interpreted as a facies change with no world-wide significance (Wagner & Winkler\ud Prins 1991)

Publisher: Geological Society of London
Year: 2011
OAI identifier: oai:nora.nerc.ac.uk:16691

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