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Thermobarometry of ultramafic rocks in ophiolites of the Vardar Zone in FYR Macedonia
Fikar, Lukáš ; Skála, Roman (advisor) ; Kallistová, Anna (referee)
This thesis is divided into review section followed by an experimental part. The first part focuses on geothermobarometry, illustrates its history and provides its detailed principles. Furthermore, it discusses various possibilities of the use of different mineral assemblages for purposes of thermometry and barometry. This part puts an emphasis on exchange reactions, the role of solvus in themometry, reactions based on weight transfers, and reactions involving gas phases. A chapter on Macedonian geography and regional geology provides a detailed description of the Vardar ophiolite belt, which was the source of the samples used in experimental part of the thesis, and its relationship toand other geological units in Macedonia, namely the Eastern Vardar Ophiolite zones, the Kopaonik unit, and the western part of the Vardar Ophiolite zone. Finally, a process of exsolution in subsolidus, which is impostant for the group of pyroxenes, is discussed. The area of interest is the use of the process of exsolution in thermometry. The thermodynamic conditions for exsolution are important features of the exsolution. The experimental part of the thesis includes a description of the samples and results of chemical analyses carried out with an electron probe microanalyzer. Chemical data were processed with two...
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