Year: 2024
Type: article
Abstract: 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.
Author: Tomáš Pek
Institution: VSB - Technical University of Ostrava
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4412149591