A record of pre-Variscan Barrovian regional metamorphism in the eastern part of the Slavonian Mountains (NE Croatia) |
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| Authors: | D Balen P Horváth B Tomljenovi? F Finger B Humer J Pamic P Árkai |
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| Institution: | (1) Faculty of Science, University of Zagreb, Zagreb, Croatia;(2) Institute for Geochemical Research, Hungarian Academy of Sciences, Budapest, Hungary;(3) Faculty of Mining, Geology & Petroleum Engineering, University of Zagreb, Zagreb, Croatia;(4) University of Salzburg, Salzburg, Austria;(5) Croatian Academy of Sciences and Arts, Zagreb, Croatia |
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| Abstract: | Summary Petrological investigations and monazite dating are carried out on medium-grade metamorphic rocks (micaschist, gneiss and
amphibolite) from the Kutjevačka Rijeka transect in the Slavonian Mts., Tisia Unit (NE Croatia). Field, mesoscopic and microstructural
observations, as well as the preserved mineral chemistry, point to a single metamorphic event during peak assemblage growth
reaching amphibolite facies conditions of ca. 600–650 °C and 8–11 kbar. Th, U and Pb contents of yttrium-rich accessory monazites
indicate a pre-Variscan, i.e. Ordovician-Silurian age (444 ± 19 and 428 ± 25 Ma) for the medium-grade metamorphism of garnet-bearing
micaschist. |
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