ASGP (2011), vol. 81: 161–171
SHRIMP U-Pb ZIRCON CHRONOLOGY OF THE POLISH WESTERN OUTER CARPATHIANS SOURCE AREAS
Bartosz BUDZYŃ(1), Daniel J. DUNKLEY(2), Monika A. KUSIAK(3), Paweł POPRAWA(4), Tomasz MALATA(5), Michał SKIBA(6) & Mariusz PASZKOWSKI(1)
1) Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in Kraków, Senacka 1, 31-002 Kraków, Poland, e-mail: ndbudzyn at cyf-kr.edu.pl, ndpaszko at cyf-kr.edu.pl
2) National Institute of Polar Research, 3-10 Midori-cho, Tachikawa 190-8518 Tokyo, Japan; e-mail: danield at nipr.ac.jp
3) Institute of Geological Sciences, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland, e-mail: mkusiak at twarda.pan.pl; Present address: Centre for Microscopy Characterisation and Analysis, The University of Western Australia, (M010) 35 Stirlig Hwy Crawley WA 6009, Australia
4) Polish Geological Institute, Department of Regional and Petroleum Geology, Rakowiecka 4, 00-975 Warszawa, Poland, e-mail: pawel.poprawa at pgi.gov.pl
5) Polish Geological Institute, Carpathian Branch, Skrzatów 1, 31-560 Kraków, Poland, tmal at vp.pl
6) Institute of Geological Sciences, Jagiellonian University, Oleandry 2a, 30-063 Kraków, Poland, michal.skiba at uj.edu.pl
Budzyń, B., Dunkley, D. J., Kusiak, M. A., Poprawa, P., Malata, T., Skiba, M. & Paszkowski, M., 2011. SHRIMP U-Pb zircon chronology of the Polish Western Outer Carpathians source areas. Annales Societatis Geologorum Poloniae, 81: 161–171.
Abstract. The Western Outer Carpathians flysch of Poland comprises clasts of crystalline rocks representing source areas that supplied sedimentary basins with clastic material. Zircon from quartz syenite and granite cobbles representing the Silesian Ridge, the currently unexposed source area located at the southern margin of the Silesian Basin, yielded uniform U-Pb dates of 604±6 Ma and 599±6 Ma. These are interpreted as the age of igneous crystallization. Similarly, zircon from a gneiss cobble derived from the northern source terrain gave 610±6 Ma date, which is interpreted as the age of crystallization of the granitic protolith to the gneiss. The Neoproterozoic magmatism is interpreted to have occurred at the Gondwana active margin.
