Study and Diagnostics of Convergent Rocks on the Example of Carbonated Fluid-Explosive Ultramaphic Dyke Complex (Middle Timan)

Abstract

Fluid-explosive rocks of the dike complex are identified in the Middle Timan. The rocks have convergent properties due to a combination of explosive and metasomatic processes. The study of the petrographic features of the rocks revealed their explosive nature. Further study of the chemical composition of rock-forming minerals established the source of the mantle material and the paragenetic relationship with carbonatite magmatism. The fluid-explosive rocks of the dyke complex have a long-term multistage formation history. The fluids caused fenitization of the host strata and its disintegration. Solid-gas material of the mantle-crustal compound fills the cracks. At the last stage of formation of fluid-explosive rocks, the rare-metal, rare-earth, and sulfide mineralization took place.

Keywords

• карбонатиты
• дайки
• флюид
• эксплозия
• редкоземельно-редкометалльная минерализация
• средний тиман