Tectonic-climatic interactions during changes of depositional environments in the Carpathian foreland: an example from the Neogene of central Poland

• Autorzy: Widera Marek , Zieliński Tomasz , Chomiak Lilianna , Maciaszek Piotr , Wachocki Robert , Bechtel Achim , Słodkowska Barbara , Worobiec Elżbieta , Worobiec Grzegorz

Identyfikatory

DOI

10.24425/agp.2020.134567

• Języki publikacji: EN

Abstrakty

EN

Many geological problems have not been convincingly explained so far and are debatable, for instance the origin and changes of the Neogene depositional environments in central Poland. Therefore, these changes have been reconstructed in terms of global to local tectonic and climatic fluctuations. The examined Neogene deposits are divided into a sub-lignite unit (Koźmin Formation), a lignite-bearing unit (Grey Clays Member), and a supra-lignite unit (Wielkopolska Member). The two lithostratigraphic members constitute the Poznań Formation. The results of facies analysis show that the Koźmin Formation was deposited by relatively high-gradient and well-drained braided rivers. Most likely, they encompassed widespread alluvial plains. In the case of the Grey Clays Member, the type of river in close proximity to which the mid-Miocene low-lying mires existed and then were transformed into the first Mid-Miocene Lignite Seam (MPLS-1), has not been resolved. The obtained results confirm the formation of the Wielkopolska Member by low-gradient, but mostly well-drained anastomosing or anastomosing-to-meandering rivers. The depositional evolution of the examined successions depended on tectonic and climatic changes that may be closely related to the mid-Miocene great tectonic remodelling of the Alpine-Carpathian orogen. This resulted in palaeogeographic changes in its foreland in the form of limiting the flow of wet air and water masses from the south and vertical tectonic movements.

Słowa kluczowe

EN

river type; lignite seam; sedimentology; tectonics; climate; miocene

PL

pokłady węgla brunatnego; sedymentologia; tektonika; klimat; miocen

• Wydawca: Faculty of Geology of the University of Warsaw ; Komitet Nauk Geologicznych PAN
• Czasopismo: Acta Geologica Polonica
• Rocznik: 2021
• Tom: Vol. 71, no. 4
• Strony: 519--542
• Opis fizyczny: Bibliogr. 156 poz., rys., tab.

Twórcy

autor

Widera Marek

• Adam Mickiewicz University, Institute of Geology, Krygowskiego 12, 61-680 Poznań, Poland

autor

Zieliński Tomasz

• Adam Mickiewicz University, Institute of Geology, Krygowskiego 12, 61-680 Poznań, Poland

autor

Chomiak Lilianna

• Adam Mickiewicz University, Institute of Geology, Krygowskiego 12, 61-680 Poznań, Poland

autor

Maciaszek Piotr

• Polish Geological Institute - National Research Institute, Marine Geology Branch, Kościerska 5, 80-328 Gdańsk, Poland

autor

Wachocki Robert

• Konin Lignite Mine, 600-lecia 9, 62-540 Kleczew, Poland

autor

Bechtel Achim

• [e-mail] Montanuniversitaet Leoben, Austria, Department of Applied Geosciences and Geophysics, Peter-Tunner-Str. 5, A-8700 Leoben, Austria

autor

Słodkowska Barbara

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

autor

Worobiec Elżbieta

• W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland

autor

Worobiec Grzegorz

• W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland

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