Kyselé metavulkanity z okolí Táborských skal ve zlatohorském rudním revíru

Acidic metavolcanites from vicinity of Táborské skály in Zlaté Hory Ore District (Silesia,Czech Republic) were identified as metamorhosed equivalents of rhyolites or alkali-rhyolites,based on their modal composition and also on major and trace element analyses. Majorelements composition of so-called „problematic“ siliceous rocks, accompanying acidicmetavolcanites resembles more closely chemistry of sedimentary rocks, but their trace elementpattern is virtually identical with investigated metarhyolites; they probably representstrongly altered volcanogenic (probably pyroclastic) rocks. Trace element distribution inacidic metavolcanites is comparable with A-type granites. Based on A-type affinity of studiedrocks and position of their analyses in geotectonic discrimination plots after Pearce et al.(1984), confinement of volcanism to divergent geotectonic environment is the most probable.