Contents
Reworked nannofossils from the Lower Miocene deposits in the Magura Nappe (Outer Western Carpathians, Poland)
Published: Oct 2012
Pages: 407 - 421
DOI: https://doi.org/10.2478/v10096-012-0032-4
Authors: MARTA OSZCZYPKO-CLOWES
Abstract: Studies, based on calcareous nannofossils, proved that the level of reworked microfossils had so far been underestimated. More recently detailed quantitative studies of calcareous nannoplankton of the Magura, Malcov, Zawada and Kremna formations from the Magura Nappe in Poland documented a degree of nannofossil recycling among those formations. In the Late Eocene–Early Oligocene pelagic Leluchów Marl Member of the Malcov Formation the level of redeposition is very low (0–3.80 %), however, in the flysch deposits of the Malcov Formation reworking increased to 31.4 %. Late Oligocene through Early Miocene “molasse” type deposits of the Zawada and Kremna formations contain 43.7–69.0 % of reworked nannofossils. Quantitative analyses of the reworked assemblages confirmed the domination of Paleogene nannofossil species over Cretaceous ones. The most abundant, reworked assemblages belong to the Early–Middle Eocene age.
Keywords: stratigraphy, calcareous nannoplankton, reworked specimens, Paleogene-Lower Neogene, Outer Western Carpathians, Magura Succession
Download PDF documentVolume 63 no. 5 / October 2012
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