Jurassic geodynamics of ridges within the Outer Carpathian realm in Poland

• Autorzy: Golonka J. , Krobicki M. , Słomka T. , Oszczypko N. , Ślączka A.
• Konferencja: International Congress on the Jurassic System (7 ; 06-18.09.2006 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

The complex Mesozoic tectonics of the Outer Carpathians produced series of ridges separating deep water basins. The Penninic-Pieniny Ocean, which originated during the Early Jurassic, was divided into the northwestern and southeastern basins by the mid-oceanic Czorsztyn Ridge. This ridge became well pronounced during the Middle Jurassic. The occurrence of mafic (basalt) intrusions at the eastern termination of the Czorsztyn Ridge in the Novoselica Klippen (Lashkevitsch et al. 1995; Golonka et al. 2004; Krobicki et al. 2005) seems to support the thermal origin of the ridge related to sea-floor spreading. During Jurassic - Early Cretaceous time the Czorsztyn Ridge was submerged and did not supply clastic material into the Pieniny and Magura Basins. This observation provides an argument against the origin of the ridge as the rifted-away fragment of the European Platform. The Jurassic - Early Cretaceous Silesian Ridge originated as a result of the fragmentation of the European Platform in this area (Golonka et al. 2003, 2004). The proto-Silesian Basin was formed during the synrift process with a strong strike-slip component. The complex system of rotated blocks was borne. The emerged fragment of these blocks supplied material to the basin. The opening of the basin is related to the propagation of the Atlantic rift system (Golonka et al. 2003). The Silesian Ridge separated the proto-Silesian Basin from the Alpine Tethys. The Eastern Carpathian (Sinaia or "black flysch") as well as to the Southern Carpathian Severin zone (Sandulescu 1988) are somehow related to this proto-Silesian basin. The direct connection is obscured however by the remnants of the Transilvanian Ocean in the area of the eastern end of Pieniny Klippen Belt Basin. In this area existed a junction of the different basinal units - Alpine Tethys, Transilvanian Ocean and Outer Carpathian Basin. The Bucovino-Getic Microplate (Golonka et al. 2003) constitutes a fragment of the East European Platform. It includes Precambrian, Early Palaeozoic (Caledonian) granites and metamorphic rocks, Late Palaeozoic (Variscan) metamorphic rocks as well as the late Palaeozoic and Mesozoic sedimentary cover. The connection of this Bucovino-Getic microplate with the Silesian Ridge is uncertain because of transform faults related to the Jurassic opening of Alpine Tethys.

Słowa kluczowe

EN

Jurassic; Carpathians; plate tectonics; Poland; Ukraine

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2006
• Tom: Vol. 4, no. 1
• Strony: 42--43
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Golonka J.

autor

Krobicki M.

autor

Słomka T.

autor

Oszczypko N.

autor

Ślączka A.

• Department of General Geology and Environment Protection, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Al. Mickiewicza 30, PL-30059 Kraków, Poland,

Bibliografia

• 1. Golonka J., Krobicki M., Oszczypko N., Ślączka A. and Słomka T. 2003. Geodynamic evolution and paleogeography of the Polish Carpathians and adjacent areas during Neo-Cimmerian and preceding events (latest Triassic - earliest Cretaceous). In: McCann T. and Saintot A. (Eds). Tracing tectonic deformation using the sedimentary record. Geological Society, London, Special Publications, 208: 138-158.
• 2. Golonka J., Krobicki M., Oszczypko N., Słaby E., Słomka T., Popadyuk I. and Netchepurenko A. 2004. Mesozoic volcanism associated with triple-junction zone of the Eastern Carpathians (Ukraine). Mineralogical Society of Poland - Special Papers, 24: 45-50.
• 3. Krobicki M., Budzyf B., Golonka J., Kruglov S., Malata E., Michalik M., Oszczypko N., Skiba M., S.aby E., Słomka T. and Zych B. 2005. Petrography and mineralogy of the Late Jurassic - Early Cretaceous volcanic rocks in the Ukrainian part of the Carpathians. Mineralogical Society of Poland - Special Papers, 25: 323-328.
• 4. Lashkevitsch Z. M., Medvedev A. P., Krupskiy Y. Z., Varitchev A. S., Timoschuk W. R. and Stupka O. O. 1995.
• 5. Tectonomagmatic evolution of Carpathians. Naukovaya Dumka, 1-131. (in Russian)
• 6. Sandulescu M. 1988. Cenozoic tectonic history of the Carpathians. In: Royden L. and Horváth F. (Eds). The Pannonian Basin: A study in basin evolution, AAPG Memoir, 45: 17-25.