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A New Preparation Method of Microfauna from Gypsum: Micropaleontological Association from the Middle Miocene Badenian Gypsum Deposits of Paratethys

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Studienzentrum Naturkunde—Mineralogie, Universalmuseum Joanneum, Weinzöttlstraße 16, 8045 Graz, Austria
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OMV Petrom, Research and Design Institute of Technology Petrom Câmpina, Culturii Bldv 29, Câmpina, 15600 Prahova, Romania
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OMV Petrom, Coralilor str. 22, 013329 Bucharest, Romania
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Department Geographie und Geologie, Geologie, University of Salzburg, Hellbrunnerstraße 34, 5020 Salzburg, Austria
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Faculty of Physics, Department of Structure of Matter, Earth and Atmospheric Physics and Astrophysics, University of Bucharest, Bulevardul Regina Elisabeta 4-12, 030018 Bucharest, Romania
*
Author to whom correspondence should be addressed.
Geosciences 2020, 10(5), 158; https://doi.org/10.3390/geosciences10050158
Received: 23 March 2020 / Revised: 21 April 2020 / Accepted: 26 April 2020 / Published: 28 April 2020
(This article belongs to the Section Geochemistry)
Evaporitic gypsum deposits represent an important paleoenvironmental record of the Miocene Badenian of the Carpathian Mountains belt. In this study, we developed a nontoxic method to concentrate calcareous microfossils from gypsum (CaSO4·2H2O), by treating the sulfate with ammonium acetate. We applied the newly developed method to gypsum collected from the Evaporitic Formation outcropping northward of Slănic-Prahova in the Eastern Carpathians. For the first time for this formation, we describe a calcareous microfossil assemblage characterized by the presence of planktonic foraminifera as well as cysts and fragments of calcareous algae. View Full-Text
Keywords: chemical preparation method; gypsum deposits; calcareous microfossil assemblage; Miocene; Eastern Carpathians chemical preparation method; gypsum deposits; calcareous microfossil assemblage; Miocene; Eastern Carpathians
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Bojar, H.-P.; Antoniade, C.; Barbu, V.; Bojar, A.-V. A New Preparation Method of Microfauna from Gypsum: Micropaleontological Association from the Middle Miocene Badenian Gypsum Deposits of Paratethys. Geosciences 2020, 10, 158.

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