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Geologica Carpathica, 1994, vol. 45, no. 3
GEOCHEMICAL CHARACTERIZATION OF GRANITIC ROCK PEBBLES FROM CRETACEOUS TO PALEOGENE FLYSCH OF THE PIENINY KLIPPEN BELT
Abstract
Granitoids s.l. belong among typical rocks forming pebbles in conglomerates of Middle Cretaceous to Paleogene flysch in the Slovak part of the Pieniny Klippen Belt (PKB). Predominant are biotite leucogranites to granite porphyries, with metaluminous to peraluminous trend, increased values of K, Zr, Y, REE, Zn and Ga/Al, decreased contents of Al, Ca, Mg, Sr and V (Upohlav type). The two comparative rhyolite samples are geochemically related to this type as well. Less frequent are biotite to two-mica granodiorites and granites, with peraluminous trend, in contrast to the first type with increased contents of above all Ca, Mg, Sr and Ba, but lower values of K, Rb, Zr, Y, Zn and Ga/Al (Kriva type). Partly different geochemical characteristics shows the occurrence of porphyric granite (Lubina type). While the Kriva and probable also Lubina type are comparable with Variscan (above all Carboniferous) orogenic granitoids of the Western Carpathian Tatric and Veporic Units, the Upohlav type has analogues in post-orogenic (above all Permian) intrusions in the broader Alpine-Carpathian and Western Mediterranean region.
Pages:
171 - 183
Published online:
0. 0. 1994