Geologists have found that global changes in the composition of the earth’s atmosphere, called the “oxygen catastrophe” occurred 100 million years earlier than expected. Scientists have obtained new data in the analysis of igneous rocks in the southern Africa uranium-lead method. With this technology, the experts determine what quantity of the selected substance has had time to disintegrate and in what time frame. Thanks to these calculations, usually given to set the “years of life” of one or another of the earth’s species.
In the study, experts found a dramatic increase in the proportion of oxygen in the Earth’s atmosphere near 2426 — 2460 million years ago. Presumably, at this time the planet was almost completely covered with snow and ice (the polar ice caps extended almost to the equator), and the hydrosphere was almost isolated from the atmosphere, according to the website “Free press.”
psychologists have added that the reason for the oxygen enrichment of the atmosphere of the planet is tectonic activity.
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