caa a22 4500 445389931 CHVBK 20180317143043.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00710-011-0175-5 doi (NATIONALLICENCE)springer-10.1007/s00710-011-0175-5 Petrographic, geochemical and geochronological investigation on granitic pebbles from Permotriassic metasediments of the Tisia terrain (eastern Papuk, Croatia) [Elektronische Daten] [Vanja Biševac, Erwin Krenn, Dražen Balen, Fritz Finger, Kadosa Balogh] Granitic pebbles occurring in the Permotriassic metasedimentary sequence of eastern Papuk, Slavonian Mountains, Croatia, were recognized to represent a coherent group of felsic, muscovite-albite metagranites. Fabrics, modal compositions and geochemical data imply that the rocks are derivatives of S-type granites formed through a combination of igneous and subsequent metasomatic processes. A Variscan formation age is demonstrated by K-Ar dating on coarse muscovite (range of 329-317Ma) as well as by electron microprobe based Th-U-Pb monazite dating (338 ± 15Ma). Additionally to the Variscan metasomatic processes of albitization and greisenisation, which led to an almost complete replacement of K-feldspar and biotite by albite and coarse muscovite, pebbles were affected by a younger phase of alteration resulting in the formation of a fine-grained sericitic matrix. The fine sericite yields K-Ar ages of 91-83Ma. A substantial reheating of the rocks during the Cretaceous is also indicated by the growth of new monazite dated at 106 ± 10Ma. Yttrium-contents of the Cretaceous monazite from the granite pebbles (0.3-0.9wt% Y2O3) are compatible with metamorphic temperatures of ~350-400°C. These data confirm recent concepts according to which large parts of the Slavonian Mountains received a pervasive Cretaceous low-T regional metamorphic overprint. Furthermore, the pebbles provide useful information on the nature of the eroded Variscan crust of the Tisia Terrain, which has obviously contained considerable amounts of evolved high-level S-type granites modified through albitization and greisenization. Springer-Verlag, 2011 Biševac Vanja Institute of Mineralogy and Petrology, Department of Geology, Faculty of Science, University of Zagreb, Horvatovac 95, HR-10000, Zagreb, Croatia aut Krenn Erwin Division of Mineralogy, Department of Materials Engineering & Physics, University of Salzburg, Hellbrunnerstr. 34, 5020, Salzburg, Austria aut Balen Dražen Institute of Mineralogy and Petrology, Department of Geology, Faculty of Science, University of Zagreb, Horvatovac 95, HR-10000, Zagreb, Croatia aut Finger Fritz Division of Mineralogy, Department of Materials Engineering & Physics, University of Salzburg, Hellbrunnerstr. 34, 5020, Salzburg, Austria aut Balogh Kadosa Institute of Nuclear Research, Hungarian Academy of Science, Bem ter 18/c, 4001, Debrecen, Hungary aut Mineralogy and Petrology Springer Vienna 102/1-4(2011-10-01), 163-180 0930-0708 102:1-4<163 2011 102 710 https://doi.org/10.1007/s00710-011-0175-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00710-011-0175-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Biševac Vanja Institute of Mineralogy and Petrology, Department of Geology, Faculty of Science, University of Zagreb, Horvatovac 95, HR-10000, Zagreb, Croatia aut NATIONALLICENCE 700 1- Krenn Erwin Division of Mineralogy, Department of Materials Engineering & Physics, University of Salzburg, Hellbrunnerstr. 34, 5020, Salzburg, Austria aut NATIONALLICENCE 700 1- Balen Dražen Institute of Mineralogy and Petrology, Department of Geology, Faculty of Science, University of Zagreb, Horvatovac 95, HR-10000, Zagreb, Croatia aut NATIONALLICENCE 700 1- Finger Fritz Division of Mineralogy, Department of Materials Engineering & Physics, University of Salzburg, Hellbrunnerstr. 34, 5020, Salzburg, Austria aut NATIONALLICENCE 700 1- Balogh Kadosa Institute of Nuclear Research, Hungarian Academy of Science, Bem ter 18/c, 4001, Debrecen, Hungary aut NATIONALLICENCE 773 0- Mineralogy and Petrology Springer Vienna 102/1-4(2011-10-01), 163-180 0930-0708 102:1-4<163 2011 102 710 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer