The Middle Miocene of the Fore-Carpathian Basin (Poland, Ukraine and Moldova)

Abstract

Studies of Miocene sediments in the Fore-Carpathian Basin, conducted by geologists from the University of Warsaw have provided new insights on the distribution of the facies infilling the basin, particularly in the forebulge and back-bulge zones. The origin of the large-scale sand bodies, evaporitic deposits and large-scale organic buildups is discussed, described and verified. These deposits originated in variable, shallow marine settings, differing in their water chemistry and the dynamics of sedimentary processes, and are unique with regard to the fossil assemblages they yield. Many years of taxonomic, biostratigraphic, palaeoecologic and ecotaphonomic investigations have resulted in the identification of the fossil assemblages of these sediments, their age, sedimentary settings and post-mortem conditions. Detailed studies were focused on corals, polychaetes, most classes of molluscs, crustaceans, echinoderms, and fishes.

Occurrence of clastic injectites in the Oligocene strata of the Carpathians and their significance in unravelling the Paleogene and Neogene evolution of the Carpathian orogeny (Poland, Ukraine and Romania)

“…As al ready in tro duced in the dis cus sion of in the Late Oligocene-Early Mio cene stage of the Carpathian orogenic belt evo lu tion (Fig. 9C), the de po si tion of the Menilite --Krosno fa cies extented to the Roztocze area, a re gion lo cated far north into the plat form (Myśliwiec and Śmist, 2006;Jankowski and Margielewski, 2015;Wysocka et al, 2016). The Menilite Beds de pos ited dur ing the Early Oligocene depositional stage (Fig.…”

“…This the ory of the north ward ex ten sion of the Menilite --Krosno sed i men tary sys tem has been in tro duced into the scien tific de bate only rel a tively re cently Margielewski, 2014, 2015;Wysocka et al, 2016) and rep re sents a novel con cept that is not yet com monly ac cepted in the Pol ish geo log i cal lit er a ture. As al ready in tro duced in the dis cus sion of in the Late Oligocene-Early Mio cene stage of the Carpathian orogenic belt evo lu tion (Fig.…”

New Paratethyan dwarf baleen whales mark the origin of cetotheres

“…This was possibly also the age of the easternmost expansion of the Fore-Carpathian Basin ( Rögl, 1998 ). The end of this stage is dated as 12.82 Ma ( Hír et al, 2016 ) or 12.65 Ma ( Palcu et al, 2015 ) and characterized by a salinity crisis and mass extinction of biota ( Wysocka et al, 2016 ): this provides a well-constrained upper age boundary for the specimen. The specimen was taken from a facies of siltstones with high clay content and without gypsum.…”

Salt tectonics in front of the Outer Carpathian thrust wedge in the Wieliczka area (S Poland) and its exposure in the underground salt mine

“…This was a foreland basin developing in front of the Carpathian orogeny, which, at present, stretches over a distance of ~1300 km, from Vienna in Austria, through Czechia, Poland and Ukraine, to Romania (e.g. Oszczypko et al 2006, Wysocka et al 2016. The Polish segment of the Carpathian Foredeep (PCF) is ca 300 km long and, outside the Carpathians, varies in width from a few kilometers near to Kraków, up to 90 km further east.…”