Preliminary results on degree of thermal alteration recorded in the eastern part of Mt. Papuk, Slavonia, Croatia

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Published: 2009-01-14
DOI: https://doi.org/10.4154/GC.2009.05
Keywords:
Tisia, Mt. Papuk, very low to low-grade metamorphism, Kübler index, Árkai index, b0-parameter, DMSO treatment, geothermobarometry

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Vanja Biševac
Department of Mineralogy and Petrology, Faculty of Science, University of Zagreb
Dražen Balen
Department of Mineralogy and Petrology, Faculty of Science
Darko Tibljaš
Department of Mineralogy and Petrology, Faculty of Science
Darko Španić
INA - Industrija nafte d.d.

Abstract

In order to improve present knowledge of metamorphic conditions to which rocks of the Mt. Papuk have been subjected, selected samples belonging to the Radlovac metamorphic complex as well as overlying sedimentary rocks and parts of Psunj metamorphic complex beneath it were studied. Rocks from Mt. Papuk were investigated, in order to determine thermal conditions, by Kübler index (illite “crystallinity”) and Árkai index (chlorite “crystallinity”) while b0-parameter of K-white mica was used for pressure conditions estimation. Treatment with dimethyl-sulfoxide (DMSO) was used in order to extend application of chlorite “crystallinity” measurements to kaolinite containing samples. Obtained results are: T=250-300°C and P=2-3 kb. Similar T data recorded on various lithologies imply the existence of unknown post lower Triassic thermal event (Alpine very low to low grade metamorphism) affecting different complexes on Mt. Papuk. New data presented and discussed in this paper will set fundament for further research and interpretation of tectono-metamorphic history of the studied area and its correlation with other similar European metamorphic complexes.

Article Details

Issue

Vol. 62 No. 1 (2009)

Section

Original Scientific Papers

Authors have copyright and publishing rights on all published manuscripts.

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