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Geochemistry of Jastraba Formation Rhyolites, Central Slovakia Volcanic Field
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 16th International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2017, Volume 2017, p.1 - 5
Abstract
The Central Slovakia Volcanic Field (CSVF) is situated at the inner side of the Carpathian arc. The former is over 5 000 km2 and is known to contain large gold, silver and base metal epithermal deposits. CSVF is of the Badenian through Pannonian age (16.5–8.5 Ma), and it is related to subduction of the flysch belt oceanic/suboceanic basement underneath the advancing Carpathian arc and to back-arc extension processes. The extensive system of base metal, silver-base metal and gold-silver epithermal veins is hosted by faults of the resurgent horst. Evolution of the system took place during and after the late stage rhyolitic magmatic activity. The latter is represented by the Jastrabá Formation rhyolites and it forms the object of the research. Major, trace and rare earth element abundance in the rocks, that could provide information about different stages of magma evolution and variations in melt composition, forms the subject of the research. The evidences presented suggest that much of the geochemical and isotopic variation of the Jastraba rhyolites results from extensive mixing of subcrustal and deep-crustal magmas.