Where was the Magura Ocean?

Abstract

In the Late Jurassic to Early Cretaceous palaeogeography of the Alpine Tethys the term Ocean is used for different parts of these sedimentary areas: eg. Ligurian – Piedmont and Penninic, Magura, Pieniny, Valais and Ceahlau-Severins oceans. The Magura Ocean occupied the more northern position in the Alpine-Carpathian arc. During the Late Cretaceous–Paleogene tectono-sedimentary evolution the Magura Ocean was transformed into several (Magura, Dukla, Silesian, sub-Silesian and Skole) basins and intrabasinal source area ridges now incorporated into the Outer Western Carpathians.

Heavy minerals from sedimentary rocks of the Malcov Formation and their palaeogeographic implications for evolution of the Magura Basin (Western Carpathians, Slovakia) during the Late Eocene – Late Oligocene

“…We pro pose the Marmarosh Mas sif as the main clastic source, de spite some con sid er ations about its NE po si tion (Oszczypko, 2004;Oszczypko et al, 2005bOszczypko et al, , 2015 or its po si tion be tween the Dukla and Magura bas ins G¹ga³a et al, 2012), re spec tively. The pres ence of the intra-basinal Marmarosh Ridge be tween the Magura and Dukla bas ins was sug gested by Leszczyñski and Malata (2002); OEl¹czka et al (2006), Warcho³ (2007) and G¹ga³a et al (2012).…”

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

“…Leško (1960) and Leško and Samuel (1968) proposed the Marmarosh Cordillera (partially identified with the present development of the Marmarosh Massif), which detached the Magura and Klippen Belt spaces until the Late Lutetian in the east. On the other hand, the Marmarosh Ridge is considered an extension of the Silesian Ridge (Bąk and Wolska, 2005) and could feed the Magura Basin from the north-eastern side (e.g., Oszczypko et al, , 2015. The presence of the intrabasinal Marmarosh Ridge between the Magura and Dukla basins was also suggested (Leszczyński and Malata, 2002;Ślączka et al, 2006;Gągała et al, 2012).…”

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

“…A sig nif i cant amount of Cr-spi nels in de pos its from the south ern most ar eas of the Magura Ba sin was shown by Starobová (1962), and later by OEl¹czka (1992, 1994) and Oszczypko and Salata (2005), which in volved a source in re-sedimented ma terial from the Pieniny Klippen Belt, per haps even from the Magura Ba sin base ment (Oszczypko and Salata, 2005;cf. Schmid et al, 2008: plate 1;Cieszkowski et al, 2010;Oszczypko et al, 2015). The pre lim i nary microchemical data ob tained from the Magura Fm.…”

“…Eocene con glom er ates of the Strihovce Fm. (Krynica Unit) con tain no ma te rial from the PKB (Czorsztyn suc ces sion, Mišík et al, 1991b;Oszczypko et al, 2015). They orig i nated from a source that was sit u ated be tween the Magura flysch and Klippen sed i men tary ar eas (South-Magura cor dil lera sensu Marschalko, 1975;Marschalko et al, 1976).…”

“…The Kamyanyi Potik Unit is most prob a bly a pro lon ga tion of the Black Flysch Unit of the Ro ma nian Carpathians (OEl¹czka et al, 2006;Hnylko et al, 2015a). The Rakhiv and Sukhiv-Burkut nappes are likely contin u a tions of the Ceahlau Unit (OEl¹czka et al, 2006;Balintoni and Balica, 2013;Oszczypko et al, 2015). The base ment of the Ceahlau-Severin Ba sin crops out mainly in the Severin Nappe (South Carpathians) and con sists of strongly dis mem bered ophiolitic lithologies (Savu et al, 1985) such as harzburgitic (rarely lherzolitic) ultra mafic rocks, gab bros and pil low bas alts.…”