An Oligocene olistostrome with exotic clasts in the Silesian Nappe (Outer Ukrainian Carpathians, Uzh River Basin)

• Autorzy: Hnylko Oleh , Hnylko Svitlana , Heneralova Larysa , Tsar Maria

Identyfikatory

DOI

10.7306/gq.1616

• Języki publikacji: EN

Abstrakty

EN

In the Ukrainian part of the Silesian Nappe (Outer Carpathians, Uzh River Basin) the exotic clast-bearing Uzhok Olistostrome (up to 60 m thick) occurs within the Oligocene Krosno Formation and underlies the Pikui Sandstone (Otryt Sandstone in Poland). The Uzhok Olistostrome consists of debris/grain/mud flow deposits with clasts of schist and bioclastic limestone. These deposits contain redeposited pelagic sediments with planktonic foraminifers including Parogloborotalia pseudocontinuosa (Jenkins), Ciperoella ciperoensis (Bolli), Globoturborotalita woodi (Jenkins), Chiloguembelina adriatica Premec Fucek, Hernitz Kucenjak and Huber. The age of the Uzhok Olistostrome based on planktonic foraminifers correlates with the middle Oligocene within the middle O2–O5 zones. The source area for the Uzhok Olistostrome and Pikui Sandstone was a mid-Oligocene intrabasinal palaeouplift (the Pikui Ridge) interpreted as the fore-bulge located in the Silesian Sub-basin ahead the emerging Outer Carpathian accretionary prism (including the Dukla Nappe and other West Carpathian inner flysch nappes).

Słowa kluczowe

EN

Ukrainian Carpathians; Silesian Nappe; Oligocene; olistostrome; foraminifers; biostratigraphy; palaeogeography

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2021
• Tom: Vol. 65, No. 4
• Strony: art. no. 47
• Opis fizyczny: Bibliogr. 86 poz., fot., map., tab., wykr.

Twórcy

autor

Hnylko Oleh

• Institute of Geology and Geochemistry of Combustible Minerals of NAS of Ukraine, Naukova 3a, Lviv 79060, Ukraine

autor

Hnylko Svitlana

• Institute of Geology and Geochemistry of Combustible Minerals of NAS of Ukraine, Naukova 3a, Lviv 79060, Ukraine

autor

Heneralova Larysa

• Ivan Franko National University of Lviv, Faculty of Geology, Mykhaila Hryshevskoho 4, Lviv 79005, Ukraine

autor

Tsar Maria

• Institute of Geology and Geochemistry of Combustible Minerals of NAS of Ukraine, Naukova 3a, Lviv 79060, Ukraine

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