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

I. I. Golubeva, A. S. Shuyskiy, V. N. Filippov, I. N. Burtsev

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


carbonatite; dykes; fluid; explosions; rare earth and rare-metal-bearing mineralization; Middle Timan

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DOI: http://dx.doi.org/10.17072/psu.geol.20.1.11

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