Foraminiferal record of marine transgression during deposition of the Middle Miocene Badenian evaporites in Central Paratethys (Borków section, Polish Carpathian Foredeep)

Terra Nova ◽  
2013 ◽  
Vol 25 (4) ◽  
pp. 298-306 ◽  
Author(s):  
Danuta Peryt
Keyword(s):  
Middle Miocene ◽  
Marine Transgression ◽  
Central Paratethys ◽  
Carpathian Foredeep ◽  
Foraminiferal Record

scholarly journals The evolution of the Carpathian Foredeep Basin during the latest Badenian and Sarmatian (Middle Miocene): inferences from micropalaeontological data

2020 ◽  
Vol 64 (4) ◽  
Author(s):  
Simina Dumitriţa DUMITRIU ◽  
Zofia DUBICKA ◽  
Sergiu LOGHIN ◽  
Mihaela Carmen MELINTE-DOBRINESCU ◽  
Jolanta PARUCH-KULCZYCKA
Keyword(s):  
Middle Miocene ◽  
Planktonic Foraminifera ◽  
Foreland Basin ◽  
Taxonomic Composition ◽  
Calcareous Nannofossils ◽  
Central Paratethys ◽  
Carpathian Foredeep ◽  
The Republic ◽  
Significant Regression ◽  
Matter Flux

Seven Middle Miocene (Upper Badenian to Lower Sarmatian) sedimentary sections of the Central Paratethys, two from the Polish Carpathian Foredeep Basin (PCFB) and five from the Eastern Carpathian Foreland Basin (ECFB) of Romania and the Republic of Moldova have been analysed micropalaeontologically to better constrain the Badenian-Sarmatian Extinction Event, characterized by significant taxonomic impoverishment of both foraminifers and ostracods. Our studies show significant palaeoenvironmental changes in the basin including depth, salinity, oxygenation, and organic matter flux. The occurrence of moderately diverse planktonic foraminifera (Globigerina, Globigerinita, Globorotalia, Trilobatus, Orbulina, Velapertina) in the Upper Badenian deposits of the PCFB as well as in the ECFB and their rarity in the lowermost Sarmatian indicate an almost fully marine environment during the latest Badenian, followed by a significant regression and possible appearance of much more restricted marine conditions across the boundary. The taxonomic composition of the Sarmatian foraminifera, ostracoda and calcareous nannofossils indicate that during this interval the salinity fluctuated strongly, with the water regime varying from brackish to normal marine. In addition, the identified micropalaeontological assemblages identified show palaeoenvironmental similarity across different basins of the Central Paratethys. This supports a hypothesis of possible connections during the latest Badenian between different areas of the Central Paratethys, as well as of the existence of a gateway between the Central Paratethys and the Mediterranean realm

scholarly journals Stratigraphy revision of upper Badenian of Rakovica stream near Belgrade (Central Paratethys, Serbia)

2020 ◽  
Vol 81 (1) ◽  
pp. 11-30
Author(s):  
Gordana Jovanovic ◽  
Sejfudin Vrabac ◽  
Stjepan Coric
Keyword(s):  
Middle Miocene ◽  
Pannonian Basin ◽  
Evidence Based ◽  
Calcareous Nannoplankton ◽  
Marine Transgression ◽  
Shallow Marine ◽  
Central Paratethys ◽  
Large Benthic Foraminifera ◽  
Marine Littoral ◽  
Lithological Composition

Belgrade area is a region of high paleobiodiversity, being ranked among the best known in Serbia. The prominent position among a number of Middle Miocene (Badenian) fossiliferous sites in the vicinity of Belgrade (southern Pannonian Basin, Central Paratethys) are occupied with sediments of Rakovica stream, also known as ?Rakovica sands?. Here, the integrated evidence based on new fossil findings of calcareous nannoplankton, foraminifera and molluscs assemblages, allows the stratigraphic revision of the clastic facies of the Rakovica succession. Based on the studies of lithological composition, high paleodiversity molluscs fauna and local palaeogeographical setting, it can be concluded with reasonable certainty that deposits of Rakovica stream entitled ?Rakovica sand? represents a sandstone of the shallow marine (littoral) environment during Lower Badenian time. Large benthic foraminifera Ammonia viennensis (d?ORBigny), and Borelis haueri (d?ORBigny) as well as zone marker nn5 Sphaenolithus heteromorphus defLandRe correspond to this biostratigraphic level. during the late early Miocene and Middle Miocene (Badenian), the climate in the Central Paratehys was mainly subtropical. This is supported at its southern margin by the presence of thermophilous mollusc taxa, as well as the Conidae, Strombidae, Xenophoridae, Pleurotomidae, Turridae, Muricidae, etc. Consequently, the investigated deposit can be ascribed to the early Badenian which biostratigraphically corresponds to the nn5 nannozone by correlation with successions in theirs type-areas to the Central Paratethys, and defines preciously the time of the marine transgression in this area.

MIDDLE MIOCENE DASHAVA FORMATION SANDSTONES, CARPATHIAN FOREDEEP, UKRAINE

2004 ◽  
Vol 27 (4) ◽  
pp. 373-388 ◽  
Author(s):  
I. Kurovets ◽  
G. Prytulka ◽  
Y. Shpot ◽  
T. M. Peryt
Keyword(s):  
Middle Miocene ◽  
Carpathian Foredeep
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