Geochemistry of Granitic Rocks of the Moldanubian Batholith (Central European Variscides)

Abstract

Granitic rocks of the Moldanubian batholith are represented by four magmatic suites: I-to S-type Weinsberg biotite granites-granodiorites, S-type Eisgarn two-mica granites, S-type Melechov/Zvůle two mica, highly fractionated granites and I/S-type Freistadt biotite granites-granodiorites. The biotite granites of the Weinsberg suite are subaluminous to weakly peraluminous granites, enriched in Ba, Sr, and Zr. The two-mica granites of the Eisgarn suite are represented by a peraluminous, the low-Th Deštná granites, intermediate-Th Mrákotín, Číměř/ Aalfang granites, and the high-Th Lipnice/Steinberg granites. The alkali feldspar and two-mica granites of the Melechov/Zvůle suite are highly fractionated, peraluminous granitic rocks, depleted especially in Ba, Zr, and Th. The granites to granodiorites of the Freistadt suite are subaluminous on Ba-and Sr-enriched granitic rocks.

Granitoids of the Mauthausen Type in the Czech Part of the Moldanubian Batholith

“…The composition of analysed monazite is similar to those of the Freistadt biotite granodiorites, but distinctly different as its composition from two-mica granites of the Eisgarn suite. For monazites from the Freistadt granodiorites is similar huttonite substitution significant, whereas monazites from two-mica granites of the Eisgarn suite display cheralite substitution [30].…”