On the possible role of magmatism in the atasu type strathiform mineralization (Central Kazakhstan)

Purpose. Studying the geological features of large industrial Atasu type ore objects. Methodology. Critical analysis literature and stock materials, comparative factors characteristic stratiform ores, stages peculiarities formation depending on processes volcanism, results isotope dating rocks. Findings. Participation volcanism (magmatism) in forming deposits ferromanganese barite-polymetallic ores was minimal. It expressed only development a dissected pre-Famennian paleorelief favorable for accumulation metal-bearing silts local hydraulic seals, which made it possible waters to circulate. Magmatic formations are protrusions more ancient Givetian-Franian volcanic structures. Originality. The pre-ore age subvolcanic intrusions partially confirmed by determining absolute age, from samples taken quarry Ushkatyn deposit that amounted 373 4 million years, corresponds middle Frasnian stage. presence three amagmatogenic Aidagarly graben-syncline also confirms this hypothesis. genesis is considered as sedimentary-hydrothermal one, associated with diagenesis catagenesis. Practical value. Predicting possibility finding graben-synclines throughout entire area Devonian volcano-plutonic belt.