Early Cretaceous intra-plate volcanism in the Pieniny Klippen Belt – a case study of the Velykyi Kamenets’/Vilkhivchyk (Ukraine) and Biała Woda (Poland) sections

Abstract

(2012) -Early Cre ta ceous intra-plate vol ca nism in the Pieniny Klippen Belt -a case study of the Velykyi Kamenets'/Vilkhivchyk (Ukraine) and Biała Woda (Po land) sec tions. Geol. Quart., 56 (4): 629-648, doi: 10.7306/gq.1045The geo log i cal po si tion and geo chem is try of the ba saltic sill and tuffs oc cur ring within the Berriasian-?Albian pe lagic lime stones of the Czorsztyn Suc ces sion are de scribed. The vol ca nic rock suc ces sion of the Velykyi (= Veliky) Kamenets'/Vilkhivchyk (= Vulkhovchik, Vulhovchik, Olkhivchyk) sites is re lated to intra-plate sub ma rine vol ca nism, which took place at the south east ern ter mi na tion of the Pieniny Klippen Belt. This vol ca nism was prob a bly as so ci ated with the Early Cre ta ceous open ing of the Magura/Fore-Magura basinal sys tem, bounded by the Silesian/Marmarosh and Czorsztyn palaeoridges to the north and south re spec tively. The al ka line vol ca nic rocks from the Velykyi Kamenets'/Vilkhivchyk sites are geochemically similar to the ba saltic block from Biała Woda (Małe Pieniny Mts., Poland), which is an olistolith a few metres across within the Jarmuta con glom er ates (Maastrichtian/Paleocene). This ba saltic block was eroded from the fron tal part of the Czorsztyn Nappe and was de pos ited in the up per most part of the Grajcarek Suc ces sion at the southeast ern mar gin of the Magura Ba sin.Nestor Oszczypko and Dorota Salata, In sti tute of Geo log i cal Sci ences, Jagiellonian Uni ver sity,

Stratigraphic position of alkaline volcanic rocks in the autochthonous cover of the High-Tatric Unit (Western Tatra Mts., Central Western Carpathians, Slovakia)

“…Simi lar brec cia beds (the Walentowa Brec cia Mem ber of the Lysa Lime stone For ma tion of Birkenmajer, 1977) are also known within Early Cre ta ceous de pos its from sev eral places within the Czorsztyn Suc ces sion of the Pieniny Klippen Belt (e.g., Wierzbowski and Remane, 1992). More re cently, min er al og ically and geochemically sim i lar bas alts and tuffs (Oszczypko et al, 2012) have been stud ied within Early Cre ta ceous strata of the Veliky Kamenets sec tion in the east ern part of the Pieniny Klippen Belt in the Ukrai nian Carpathians. The age of this vol canic event is very pre cisely lo cated in the Elliptica-Sim plex Subzones of the Mid dle and early Late Berriasian (Reháková et al, 2011).…”

Where was the Magura Ocean?

“…Albian-Cenomanian) was recognised in the old, Malyi Kamenets' quarry, and in the section of the Vilkhivchyk Stream. The rocks are typical of oceanic island arc alkali basalts and pyroclastics belonging to intraplate volcanism (Oszczypko et al 2012b). Higher up in the succession, these are followed by variegated marls of the Púchov Formation (Turonian-Campanian), by the Jarmuta Formation (Maastrichtian/Paleocene) and the Vilkhivchyk Formation (Lower-Middle Eocene, Smirnov 1973).…”

“…2012b) and in the Slovakian sector of the PKB (Spišiak et al 2011). It is also known from sedimentary blocks in the Grajcarek succession in Poland (Birkenmajer and Wieser 1990;Oszczypko et al 2012b) where it represents intraplate volcanism (Oszczypko et al 2012b). At the northern margin of the Magura Nappe (RdFZ and the Gresten Klippens -Text-figs 7, 8), Early Cretaceous volcanism is distributed much wider than the Late Jurassic volcanism.…”

“…Recently, the Velyki Kamenets has been intensively studied (Krobicki et al 2003;Lewandowski et al 2005;Rehakova et al 2011;Oszczypko et al 2012b. The 80-m thick succession of the Kamenets quarry is represented by the Czorsztyn/Niedzica type of lithofacies (Rehakova et al 2011).…”

“…Towards the north, the PKB is thrust at a low angle over the Drahovo Sandstones of the Monastyrets Unit (Smirnov 1973;Kruglov in Ślączka et al 2006). To the south these klippens contact with the Neogene deposit of the Transcarpathian Depression (Oszczypko et al 2005b;2012b).…”