Palaeoenvironmental and palaeoclimatic records in the Niedzica Succession sediments (Pieniny Klippen Belt) in the light of geochemical and chemostratigraphical analysis

• Autorzy: Kasperek Kamila
• Konferencja: Western Tethys meets Eastern Tethys - geodynamical, palaeoceanographical and palaeobiogeographical events : Second Symposium of the International Geoscience Programme IGCP 710 : 28th August - 3rd September, 2023, Kraków, Poland : abstract book
• Języki publikacji: EN

Abstrakty

EN

The Middle–Upper Jurassic sediments of the Niedzica-Podmajerz section was the subject of integrated study, including sedimentological, geochemical and stratigraphic analysis. The studied section is located in the Pieniny Klippen Belt area and belongs to the Niedzica unit. The section is characterized by continuous exposure of Jurassic carbonate-silica deposits extending from the Bajocian to Kimmeridgian, showing a transition from crinoidal limestones representing typical neritic facies to pelagic facies, i.e. radiolarites and red nodular limestones. The following lithofacies were distinguished in the studied section: grey crinoidal limestones (Smolegowa Limestone Formation), red crinoidal limestones (Krupianka Limestone Formation), red nodular limestones (Niedzica Limestone Formation), radiolarites (Czajakowa Radiolarites Formation) and red nodular limestones (Czorsztyn Limestone Formation). Based on a multidisciplinary dataset, the palaeoenvironmental interpretation was proposed. The results of magnetic susceptibility (MS), gamma-ray spectrometric measurements, CaCO3 content, δ13C analysis and concentrations of major and trace elements data indicate a rapid change in sedimentary conditions at the Callovian–Oxfordian boundary. Variations of δ13C from the Niedzica-Podmajerz indicate global changes in biological productivity, ocean circulation and burial of organic matter in the Tethys area, analogies of which can be found, for example, in Fatricum Domain in the Tatra Mountains. Records of MS, elements K, Th, Al, as well as Ti/Al and Zr/Al proxies indicate probably a period of increased (Lower Bathonian–Upper Callovian) and decreased (Oxfordian) detrital supply to the sedimentary basin. This process was most likely climatically controlled. The CaCO3 results indicate the variability of carbonate production. The lowest values of calcium carbonate (<20%) in Niedzica-Podmajerz section was recorded in the middle part of the radiolarites of the Czajakowa Radiolarite Formation, corresponding to the phase of the carbonate crisis. From this interval, the amount of carbonates in the rocks gradually increases, indicating a return to carbonate sedimentation. These fluctuations probably reflect changes in the position of the ACD and CCD.

Słowa kluczowe

EN

Pieniny Klippen Belt; geochemical analysis; chemostratigraphical analysis

PL

analiza geochemiczna; analiza chemostratygraficzna; Pieniński Pas Klippen

• Wydawca: Wydawnictwa AGH ; Stowarzyszenie Naukowe im. Stanisława Staszica
• Czasopismo: Geotourism / Geoturystyka
• Rocznik: 2023
• Tom: nr 1-2 (72-73)
• Strony: 34--34

Twórcy

autor

Kasperek Kamila

• Institute of Geological Sciences, Faculty of Geography and Geology, Jagiellonian University, Gronostajowa 3a, 30-387 Krakow, Poland

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).