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Cyclothem ["digital"] correlation and biostratigraphy across the global Moscovian-Kasimovian-Gzhelian stage boundary interval (Middle-Upper Pennsylvanian) in North America and eastern Europe

¹ Department of Geoscience, University of Iowa, Iowa City, Iowa 52242, USA
² Department of Paleontology, Geology Faculty, Moscow State University, 119992 Moscow, Russia
³ Department of Geosciences, Texas Tech University, Lubbock, Texas 79409, USA
⁴ School of Geology, Oklahoma State University, Stillwater, Oklahoma 74078, USA
⁵ Geological Institute, Russian Academy of Sciences, Pyzhevsky per. 7, 110017 Moscow, Russia
⁶ Institute of Geological Sciences, National Academy of Sciences of Ukraine, O. Gonchar Str. 55b, 01054 Kiev, Ukraine
⁷ Department of Earth System Science, Faculty of Science, Fukuoka University, Fukuoka 814-0180, Japan
⁸ Department of Geology, University of Oviedo, Arias de Velasco s/n, 33005 Oviedo, Spain
⁹ Maine State Museum, 83 State House Station, Augusta, Maine 04333, USA

The long-standing difficulty of correlating Pennsylvanian strata among provincial faunal regions is resolved by effecting "digital" correlation of major glacial-eustatic cyclothems that represent high-stands when certain species achieved more global distribution than usual. In the late Moscovian–early Gzhelian (late Desmoinesian–early Virgilian) succession in the midcontinent United States, several major cyclothems are correlated, by both conodont species in common and cyclothem scale, with cyclothems in Russia (Moscow Basin) and Ukraine (Donets Basin), and the remaining cyclothems fit into the framework by position and scale. In this way the suggested event marker for the global Kasimovian-Gzhelian stage boundary (first appearance of Idiognathodus simulator) is supported, while possible event markers for the Moscovian-Kasimovian boundary await further evaluation.

Key Words: Pennsylvanian • cyclothem • correlation • biostratigraphy

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