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Avalonian and Baltican terranes in the Moesian Platform (southern Europe, Romania, and Bulgaria) in the context of Caledonian terranes along the southwestern margin of the East European Craton

Martin S. Oczlon, Antoneta Seghedi and Charles W. Carrigan
Avalonian and Baltican terranes in the Moesian Platform (southern Europe, Romania, and Bulgaria) in the context of Caledonian terranes along the southwestern margin of the East European Craton (in The evolution of the Rheic Ocean; from Avalonian-Cadomian active margin to Alleghenian-Variscan collision, Ulf Linnemann (editor), R. Damian Nance (editor), Petr Kraft (editor) and Gernold Zulauf (editor))
Special Paper - Geological Society of America (2007) 423: 375-400

Abstract

The Moesian Platform is a crustal block within southern Europe, located beyond the southwestern margin of the East European craton. Along this margin lie terranes that were accreted to Baltica as part of Far Eastern Avalonia during Late Ordovician-Early Devonian time and terranes that already formed part of Cambrian Baltica, displaced as proximal terranes together with Far East Avalonian terranes. The tectonic history and crustal affinity of the Moesian Platform, however, remain poorly understood. A review of available tectonostratigraphic, paleontological, and geochronologic data suggests that the Moesian Platform comprises four distinct terranes, two with Baltican and two with Avalonian affinities. A fifth terrane, North Dobrogea, lies between the Moesian Platform and the East European craton and records Variscan (Carboniferous) accretion. This accretionary record leads to the paradox that the youngest accreted crust (North Dobrogea) lies closest to the craton, whereas the earlier accreted crust and crust derived from the craton itself are now located more externally. A review of terranes along the southwestern margin of the East European craton, between the North Sea and the Black Sea, suggests that a dextral strike-slip dominated the southwestern Baltican margin during Late Ordovician-Early Devonian accretion of Far Eastern Avalonia, much as is the case in western North America today. Variscan indentation of the Bohemian Massif led to escape-displacement of some Caledonian terranes, and strike-slip displacement during the Mesozoic opening of Mediterranean-style oceanic basins led to the current juxtaposition of Moesian terranes, inverted with respect to their accretionary history.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 423
Title: Avalonian and Baltican terranes in the Moesian Platform (southern Europe, Romania, and Bulgaria) in the context of Caledonian terranes along the southwestern margin of the East European Craton
Title: The evolution of the Rheic Ocean; from Avalonian-Cadomian active margin to Alleghenian-Variscan collision
Author(s): Oczlon, Martin S.Seghedi, AntonetaCarrigan, Charles W.
Author(s): Linnemann, Ulfeditor
Author(s): Nance, R. Damianeditor
Author(s): Kraft, Petreditor
Author(s): Zulauf, Gernoldeditor
Affiliation: Aldridge Minerals, Walldorf/Heidelberg, Federal Republic of Germany
Affiliation: Staatliche Naturhistorische Sammlungen Dresden, Museum fuer Mineralogie und Geologie, Dresden, Federal Republic of Germany
Pages: 375-400
Published: 2007
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 185
Accession Number: 2008-044787
Categories: StratigraphyStructural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N44°00'00" - N48°00'00", E21°00'00" - E28°00'00"
Secondary Affiliation: Ohio University, USA, United StatesCharles University Prague, CZE, Czech RepublicUniversitaet Frankfurt am Main, DEU, Federal Republic of GermanyGeological Institute of Romania, ROM, RomaniaOlivet Nazarene University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200813
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