Abstract
This paper reports the first results of kinetic and thermodynamic modeling of interaction between the komatiitic material of the earliest terrestrial ocean and seawater. The modeling was aimed at reconstructing geochemical effects accompanying the early evolution of the earth’s outer shells, atmosphere, and hydro-sphere. We also explored the character of mineral transformations in the protooceanic crust during its hydro-thermal alteration. Kinetic and thermodynamic simulation by means of the GEOCHEQ program complex was the main tool of our study. The results of modeling allowed us to estimate the character of the environment and the duration of the formation of the oldest banded iron formation (BIF) and volcanogenic massive sulfide (VMS) deposits and reconstruct main trends in the compositional variations in the hydrosphere and atmosphere that coexisted with them.
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