Publication details

Geochemie, petrografie a mineralogie ultrabazických hornin gföhlské jednotky moldanubika – nové poznatky o jejich původu a vývoji

Title in English Geochemistry, petrography and mineralogy of ultrabasic rocks from the Moldanubian Zone (Gföhl Unit) - new knowledge of their origin and evolution


Year of publication 2019
Type Appeared in Conference without Proceedings
MU Faculty or unit

Faculty of Science

Attached files
Description From a regional geological point of view, ultrabasic rocks correspond to subduction-related serpentinites, based on geochemistry (higher Ti ~ 132-730 ppm, increased Yb concentration up to 0.35 ppm and REE distribution), the spatial association with eclogites and HP granulites and the chemical composition of Cr-spinels (Deschamps et al. 2013). Examined serpentinites have formed as a result of a collision between the Bohemicum and the Moldanubicum during the HP-HT stage of Variscan orogenesis, which suggest geochronological data from ultrabasics (Sm-Nd ~ 336-339 Ma; see Medaris et al. 2005), comparable to radiometric U-Pb ages metamorphic zircons from Gföhl granulites (338-347 Ma; see Kröner et al. 2000).

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