Petrology of two granite types from the Tribeč Mountains,Western Carpathians: An example of allanite (+ magnetite) versus monazite dichotomy

Two granitoid series have been distinguished in the Tribe? Mountains (Western Carpathians) on the basis of the contrasting petrological behaviour of their accessory minerals. The allanite–magnetite-bearing (AM) tonalite–granodiorite–granite series typically contains dark magmatic enclaves and is produced from oxidizing, more hydrous (about 5.2 wt.% water) melts that were emplaced at depths equivalent to 350 ± 100 MPa. The monazite-bearing (M) tonalite–granodiorite–granite series contains only metamorphic xenoliths and comes from reduced and drier (about 2.3 wt.% water) melts that were probably emplaced at a shallower depth. The inferred magma properties probably reflect source rock effects. The mineralogical discrimination scheme between the AM and M series corresponds broadly to I- and S-type subdivision and may be useful not only for the granitoid bodies in the Western Carpathians but also for the whole Variscan orogenic belt.