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Micropaleontological response to the changing paleoenvironment across the Sarmatian-Pannonian boundary in the Transylvanian Basin (Miocene, Oarba de Mures section, Romania)

• Geologica Carpathica
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• Volume 62 No.1 / February 2011

Published: Feb 2011

Pages: 91 - 102

DOI: https://doi.org/10.2478/v10096-011-0008-9

Authors: SORIN FILIPESCU, FRANZ WANEK, ANGELA MICLEA, ARJAN DE LEEUW, IULIANA VASILIEV

Abstract: The Sarmatian-Pannonian transition has been investigated in Section A of Oarba de Mures in the central Transylvanian Basin. Micropaleontological assemblages are diagnostic for different environmental settings and demonstrate a clear zonation, which was used to reconstruct the genetic units. Five stratigraphic sequences were described and subdivided based on the microfossil assemblages. Transgressive intervals were documented by five-chambered and biserial planktonic foraminifera, normal regressions by assemblages with abundant mysid, dasyclads, diatoms, and benthic rotaliid foraminifera, while the forced regressions are characterized by reworking. The Sarmatian-Pannonian boundary (11.3 Ma) is clearly documented by microfossils and is calibrated with radiometric and magnetostratigraphic data. A new interpretation for the interbasinal correlation is proposed by synchronizing the top of the Central Paratethyan Sarmatian with the top of the Eastern Paratethyan Bessarabian.

Keywords: Sarmatian, Pannonian, Transylvanian Basin, stratigraphy, microfossils, Foraminifera, Ostracoda

Volume 62 no. 1 / February 2011

• SEBASTIAN VOGEL, MICHAEL MARKER, FLORIAN SEILER

  Revised modelling of the post-AD 79 volcanic deposits of Somma-Vesuvius to reconstruct the pre-AD 79 topography of the Sarno River plain (Italy)

• PIETRO P.C. AUCELLI, VINCENZO AMATO, MASSIMO CESARANO, GERARDO PAPPONE, CARMEN M. ROSSKOPF, ELDA RUSSO ERMOLLI, FABIO SCARCIGLIA

  New morphostratigraphic and chronological constraints for the Quaternary paleosurfaces of the Molise Apennine (southern Italy)

• DARIO GIOIA, CLAUDIO MARTINO, MARCELLO SCHIATTARELLA

  Long- to short-term denudation rates in the southern Apennines: geomorphological markers and chronological constraints

• PAOLA DI LEO, DARIO GIOIA, CLAUDIO MARTINO, ANNA PAPPALARDO, MARCELLO SCHIATTARELLA

  Geomorphological, mineralogical, and geochemical evidence of Pleistocene weathering conditions in the southern Italian Apennines

• VINCENZO DI FIORE, GEMMA AIELLO, BRUNO D’ARGENIO

  Gravity instabilities in the Dohrn Canyon (Bay of Naples, Southern Tyrrhenian Sea): potential wave and run-up (tsunami) reconstruction from a fossil submarine landslide

• SALVATORE IVO GIANO

  Quaternary alluvial fan systems of the Agri intermontane basin (southern Italy): tectonic and climatic controls

• ELEONORA P. RADIONOVA, LARISSA A. GOLOVINA

  Upper Maeotian–Lower Pontian “Transitional Strata” in the Taman Peninsula: stratigraphic position and paleogeographic interpretation

• SORIN FILIPESCU, FRANZ WANEK, ANGELA MICLEA, ARJAN DE LEEUW, IULIANA VASILIEV

  Micropaleontological response to the changing paleoenvironment across the Sarmatian-Pannonian boundary in the Transylvanian Basin (Miocene, Oarba de Mures section, Romania)

• DIRK FEHSE

  SHORT COMMUNICATION A new Middle Miocene Niveria Jousseaume, 1884 (Mollusca: Gastropoda: Trivioidea) from Hungary