1. Background. The evolution of oxygenic photosynthesis dramatically expanded the role of biological processes in Earth's geochemical cycles, altered the redox properties of Earth's surface and increased the fluxes within the surface carbon cycle [1,2].The timing of the origin of this metabolism directly informs hypotheses about …
The main gold ore metallogenic epochs are characterized. Links of gold deposits with VMS and Cu-Ni in the early periods of the Earth (Archaean-Proterozoic) and, in addition, with deposits of W, Mo, Cu, Sb, Hg and Sn in the Phanerozoic are shown. An analysis of the distribution of mineralogical and geochemical types of the actual Au ...