Geology of the volcano-sedimentary complex of the Kamyanyi Potik Unit on Chyvchyn Mount (Ukrainian Carpathians) : preliminary results

• Autorzy: Hnylko O. , Krobicki M. , Feldman-Olszewska A. , Iwańczuk J.

Identyfikatory

DOI

10.7306/gq.1220

• Języki publikacji: EN

Abstrakty

EN

The Kamyanyi (Kaminnyi) Potik Unit (Nappe) is the most internal and structurally-highest unit of the Fore-Marmarosh units, and in many places is directly covered by the Marmarosh Nappes of the Marmarosh Crystalline Massif. Chyvchyn Mount is built of this unit and forms a separate tectonic cap (Chyvchyn Mt. Klippe). It consists of the Upper Jurassic/lowermost Cretaceous Chyvchyn Formation, composed mainly of basic volcanic rocks, and the Tithonian-Early Cretaceous Kamyanyi Potik Formation, represented by calcareous and/or turbiditic deposits containing volcanic material. Geological mapping showed that this complex forms a tectonic klippe, which consists of four small tectonic thrust slices. Structurally, the lowermost one is represented by thin-bedded micritic limestones with cherts, and is interbedded with coarse/fine-grained calcareous pyroclastic turbidites (flysch). The second thrust slice is composed of calcareous-pyroclastic breccia with blocks of limestone, basalt, and chert (radiolarite?), which occur within a pyroclastic matrix and of coral limestones with basalt fragments and pyroclastic intercalations. The third thrust slice is constructed of breccia with a pyroclastic and volcanic matrix and clasts of effusive rocks and limestone. The fourth thrust slice – the highest – is represented by massive basaltic pillow lavas. Sedimentologically, the volcano-sedimentary complex represents a whole spectrum of marine mass-movement deposits, from debris flows through proximal turbidites to distal ones, which were formed during latest Jurassic/earliest Cretaceous time in the Outer Dacide-Severinide part of the Carpathian basins.

Słowa kluczowe

EN

volcanic rocks; pyroclastic flysch; basaltic pillow lavas; Carpathians; Chyvchyn Mountains; Kaminnyi Potik Unit

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2015
• Tom: Vol. 59, No. 1
• Strony: 145--156
• Opis fizyczny: Bibliogr. 42 poz., rys., wykr.

Twórcy

autor

Hnylko O.

• National Academy of Science of Ukraine, Institute of Geology and Geochemistry of Combustible Minerals, Naukova 3a, 79060 Lviv, Ukraine

autor

Krobicki M.

• Polish Geological Institute – National Research Institute, Carpathian Branch, Skrzatów 1, 31-560 Kraków, Poland
• AGH Univer sity of Science and Technology, Al. A. Mickiewicza 30, 30-059 Kraków, Poland

autor

Feldman-Olszewska A.

• Polish Geological Institute – National Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland

autor

Iwańczuk J.

• Polish Geological Institute – National Research Institute, Rakowiecka 4, 00-975 Warszawa, Poland

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Uwagi

Fifth Polish Sedimentological Conference – POKOS V; Deep-sea flysch deposits – sedimentological aspects of the Carpathian basins history (2013; 16-19.05; Żywiec, Poland)