Open AccessGeochemical environments of the Archean-Proterozoic
Author(s) -
V. G. Kuznetsov
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524884403-407
Subject(s) - archean , proterozoic , precambrian , geology , geochemistry , carbonate , ferrous , banded iron formation , calcite , early earth , earth science , chemistry , paleontology , organic chemistry , tectonics
In the Precambrian section, there is a change of Archean calcite carbonate rocks to magnesia and ferrous in the Proterozoic. This is correlated with the massive development of cyanobacteria, the absorption of which carbon dioxide and the generation of oxygen, led to a change in the acidic reduction conditions of Archaean alkaline oxidizing in the Proterozoic.