The Mariánské Lázně granite: Petrology and geochemistry, western Bohemia
The porphyritic, coarse- to medium-grained granitoids of the Mariánské Lázně body vary in composition from monzogranite to to quartz monzonite. New data on the chemistry of the main minerals, similar modal compositions and whole-rock analyses show correspondence to the Bor monzogranite. Both granitoids studied are medium fractionated with low to medium K/Rb (118-197 and 183-252, respectively), high Rb/Sr (1.16-1.36 and 0.87-1.85, respectively), and an increased Zr content. The proportion of TiO2 and other „femic suite“ constituents in Haberland's dioritic facies (Haberlandt 1929) indicate some stage of assimilation of adjacent rocks rather than a fractionation trend. Considering these data, we suggest that the Mariánské Lázně granitoid body is not a part of the surrounding Karlovy Vary Pluton (Hejtman 1984), but a northern elongation of the Bor Massif.
SNIP (Scopus, 2017): 1.120
IF (ISI, 2017): 1.415
5 YEAR IF (ISI, 2017): 1.738
Policy: Open Access