engleski

A record of pre-Variscan Barrovian regional metamorphism in the eastern part of the Slavonian Mountains (NE Croatia)

Petrological investigations and monazite dating are carried out on medium-grade metamorphic rocks (micaschists, 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, Pb contents of yttrium-rich accessory monazites indicate a pre-Variscan, i.e. Ordovician-Silurian age (444&plusmn ; ; ; 19 and 428&plusmn ; ; ; 25 Ma) for the medium-grade metamorphism of garnet-bearing micaschists.

Geothermobarometry; Monazite dating; Silurian; pre-Variscan; Metamorphism; Tisia; Slavonian Mts.; Croatia

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