Geochemical constraints of orthogneiss from the Velešín area

 

Miloš René

Geoscience Research Reports 37, 2004 (GRR for 2003), pages 120–121

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Abstract

In the Velešín area in the southern Bohemia biotite and muscovite-biotite orthogneisses occur that are part of the Monotonous group of the Moldanubian Zone. Examined orthogneiss has a peraluminous character and significant geochemical features. This orthogneiss has significantly low content of thorium and zirconium, higher K20/Na20 ratio and negative europium anomaly. Orthogneiss is probably a metamorphic equivalent of strongly fractionated granite. Occurrence of orthogneisses of similar geochemical features is very significant for Czech part of the Moldanubian Zone of the Bohemian Massif.