Geochemické a izotopové vymezení složení svrchního pláště Českého Masivu

Erban Kočergina, Julie

This dissertation consists of three scientific articles, two of which have already been published, and the third is currently undergoing peer review. The complete texts of the publications are appended to this thesis. This dissertation presents a discussion of the methodology used in the geochemical processing of mantle peridotites and the extraction of information from a limited sample size. In the course of this dissertation, I have acquired proficiency in the methodologies of peridotite sample preparation, acid digestion of the sample, separation of radiogenic Sr-Nd-Pb-Os-Hf isotopes, leaching and determination of total sulfur content in peridotites, separation and determination of siderophile elements, and in-situ determination of elements by laser ablation and electron microprobe. The methodology of sample preparation, separation and measurement of Sr-Nd- Pb isotopes was optimised in the conditions of CGS laboratories. The methodologies were validated by measuring a large number of international isotope standards, and the results were published. This publication forms part of my PhD thesis. The second part of the dissertation addresses the heterogeneity of the Earth's mantle under the Bohemian Massif. Specific focus was placed on Re-Os isotopes and PGE composition. A total of 14 sites...

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