Foraminiferal stratigraphy and palaeobathymetry of Paleocene-lowermost Oligocene deposits (Vezhany and Monastyrets nappes, Ukrainian Carpathians)

Abstract

Mainly pe lagic/hemipelagic de pos its of the Vezhany Nappe (Paleocene-low er most Oligocene Metova For ma tion with a high con tent of plank tonic foraminifera) and typ i cal flysch de pos its of the Monastyrets Nappe (Paleocene-Eocene Sushmanets For ma tion with com mon ag glu ti nated foraminifera as well as the Eocene Drahovo For ma tion), of the south west ern in ner part of the Ukrai nian Carpathians have been stud ied. The Parvularugoglobigerina eugubina Zone (Lower Danian), Acarinina acarinata Zone (Up per Thanetian), Morozovella subbotinae Zone and Morozovella aragonensis Zone (Ypresian), Acarinina bullbrooki Zone and Acarinina rotundimarginata Zone (Lutetian), Subbotina corpulenta Zone and Subbotina vialovi Zone (Up per Priabonian-Lower Rupelian) based on plank tonic foraminifera as well as the Rzehakina fissistomata sensu lato Zone (Paleocene), Glomospira charoides-Recurvoides smugarensis Zone (Ypresian), and an as sem blage with Haplophragmoides parvulus (lat est Mid dle Eocene-early Late Eocene) based on ag glu ti nated foraminifera have been iden ti fied in these de pos its. The deep-wa ter ag glu ti nated foraminifera of the "Rzehakina", "Rhabdammina" and "Paratro chamminoides" assem blages found in the typ i cal flysch de pos its of the Sushmanets For ma tion in di cate lower slope to abys sal en vi ron ments be low the CCD. The ge neric com po si tion and mor pho log i cal fea tures of plank tonic and ben thic foraminifera re cov ered from marls of the Metova For ma tion sug gest pe lagic/hemipelagic con di tions at bathyal depths above the foraminiferal lysocline.

Chromian spinels from the Magura Unit (Western Carpathians, Eastern Slovakia) – their petrogenetic and palaeogeographic implications

“…Sedimentological data from the Paleocene-low er most Oligocene Vezhany succesion (Metova Fm.) sup port the con clu sions based on foraminifera, in di cat ing a bathyal en vi ron ment (Hnylko et al, 2015a;Hnylko and Hnylko, 2016) and dur ing depo si tion of the Eocene suc ces sion in the Magura Ba sin the ophiolitic as so ci a tion of the Vezhany Nappe could not have been the source for Cr-spi nels. Ophiolite com plexes of the Vezhany Nappe are prob a bly rem nants of the Transylvanian --Mures (Vardar-Mures) Su ture Zone (Csontos and Vörös, 2004;Schmid et al, 2008) formed af ter col li sion of the Tisza and Dacia Mega-units (Schmid et al, 2008;Hnylko et al, 2015b).…”

“…The ophiolite ma te rial now pres ent as olistoliths in the Vezhany Nappe (Marmarosh Klippen Zone; Hnylko and Hnylko, 2016) may have par tially sourced the youn ger (Oligocene) flysch de pos its of the Magura Ba sin (Malcov Fm.). The Vezhany Nappe is lo cated to the north west of the Marmarosh Crys tal line Mas sif.…”

“…is rep re sented by an Early Cre ta ceous olistostrome (in places an olistostrome-conglom er ate) with olistoliths of Pro tero zoic(? )-Pa leo zoic-Me sozoic rocks de rived from the Marmarosh Mas sif as well as olistoliths of Me so zoic mafic-ultra mafic rocks and also of Lower Cre ta ceous organogenic Urgonian-type lime stones (Hnylko and Hnylko, 2016). Olistoliths of an ophiolitic as so ci a tion are formed by serpentinised peri dot ites with spi nels (lherzolites, harzburgites and websterites).…”

Heavy minerals and exotic pebbles from the Eocene flysch deposits of the Magura Nappe (Outer Western Carpathians, eastern Slovakia): their composition and implications on the provenance

“…The geological composition of the Silesian Ridge varied from north to south (Soták, 1992;Budzyń et al, 2008Budzyń et al, , 2011 and did not relate to the Bohemian Massif (Soták, 1990). Koráb et al, 1962;Stránik, 1965;Contescu et al, 1966;Nemčok et al, 1968;Marschalko, 1975;Marschalko et al, 1976;Soták, 1990;Mišík et al, 1991aMišík et al, , 1991bOszczypko andOszczypko-Clowes, 2006, 2009;Márton et al, 2007Márton et al, , 2013Schmid et al, 2008;Hnylko, 2011a;Merten, 2011;Merten et al, 2011;Kováčik et al, 2011Kováčik et al, , 2012Plašienka, 2012;Handy et al, 2014;Hnylko and Generalova, 2014;Plašienka and Soták, 2015;Hnylko O et al, 2015;Hnylko OM et al, 2015;Hnylko and Hnylko, 2016;Bónová et al, 2016Bónová et al, , 2017Kováč et al, 2016). MnZ -Monastyrets Zone; DB -Dukla basin, SR -Silesian Ridge, SSR -Sub-Silesian Ridge, KR -Kumane Ridge, SMR -South Magura Ridge (Cordillera); CWC -Central Western Carpathians, MHB -Myjava-Hričov Basin, EA -Eastern Alps; KhN -Kahlenberg Nappe; PKB -Pieniny Klippen Belt; BKU -Biele Karpaty Unit; INZ -Inacovce Zone; KRZ -Kricevo Zone; SZ -Szolnok Zone; T -Tisza Mega-Unit; MZ -Mecsek Zone, V-BZ -Villány-Bihor Zone, B-CZ -Békés-Codru Zone; D -Dacia Mega-Unit; TB -Transylvanian Basin (land and epicontinental area), MB -Maramures Basin (trough), VZ -Vezhany Zone; EV -Eastern Vardar ophiolitic unit; EC -Eastern Carpathians; MR -Marmarosh (Rakhov) Zone (elevation), ChN -Chornohora Nappe; SvN -Svydovets Nappe, SvB -Svydovets Basin (dipping part); KrN -Krasnoshora Nappe, Fore-Marmarosh Suture (Ceahlau): BrN -Burkut Nappe;...…”

The Early Miocene residual flysch basin at the front of the Central Western Carpathians and its palaeogeographic implications (Magura Nappe, Poland)

“…con tinue, along the PKB to the east, up to the Ukrai nian Carpathians (e.g., Drahovo Fm. of the Marmarosh Flysch, see Oszczypko et al, 2005b;Hnylko and Hnylko, 2016). Oligocene/Mio cene de pos its, sim i lar to the Kremna Fm., have been rec og nized as the Zawada Fm.…”