Abstract
The Brno Massif in Moravia, Czech Republic, is an important exposure of Precambrian basement in central Europe. It includes large volumes of Cadomian granitoids and a narrow fault-bounded zone with metagabbros, metadiorites, and metabasalts. This so-called Central Basic Belt also contains some metarhyolites; one of these was dated by means of the zircon evaporation method at 725 ±15 Ma. Chemical and isotope data show that the dated rock represents a mantle-derived magma which is cosanguinous with surrounding MORB-type metabasites. The data suggest that the Brno Massif hosts the oldest metabasite complex currently known in central Europe. Its formation apparently coincides with the main period of ocean-floor spreading and island-arc formation in the Panafrican orogens. This lends further support to the theory that the Brno Massif is a Gondwana-derived element.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 9 December 1999 / Accepted: 9 February 2000
Rights and permissions
About this article
Cite this article
Finger, F., Tichomirowa, M., Pin, C. et al. Relics of an early-Panafrican metabasite–metarhyolite formation in the Brno Massif, Moravia, Czech Republic. Int Journ Earth Sciences 89, 328–335 (2000). https://doi.org/10.1007/s005310000084
Issue Date:
DOI: https://doi.org/10.1007/s005310000084