Mineral-forming fluids as an indicator of the evolution of external shells of the early precambrian of the Earth

1Fomin, Yu.A, 1Demikhov, Yu.N, Verkhovtsev, VG, Borisova, NN
1Institute of Environmental Geochemistry of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2018, 7:72-76
Section: Geosciences
Language: Ukrainian

Based on the isotope-geochemical study of the fluid of gas-liquid inclusions, it is concluded that the evolution of the outer shells of the Earth, expressed globally, by a change in the gas composition of the atmosphere from the oxygen-free to oxygen-rich one at the boundary of the Archaean—Early Proterozoic, led to a change in the endogenous processes of ore and mineral formations.

Keywords: Archaean, deposits of gold and uranium, greenstone areas, isotopic composition, mineral-forming fluid, Proterozoic, Ukrainian Shield
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