View of earth and atmosphere, rising and falling oxygen levels
Twice in the Earth, the oxygen concentration in the atmosphere has increased rapidly. Details were still unclear about it. A new method now allows a look back - and proves baffling fluctuations of the vital connection. If you are interested in chrome ore buyers, you should have a look here
Great Oxidation Event geoscientists call the two events that have changed drastically from about 2.4 billion and 750 million years ago, the Earth's atmosphere. Suddenly rose respectively to the oxygen concentration - but the details of this for the emergence of life fundamentally important processes have so far not known.
Thanks to a new method, it is an international research team now managed to take a closer look at the history of the atmosphere. Robert Frei of the University of Copenhagen and his colleagues studied iron-rich sedimentary rocks from different places of the earth that is up to three billion years old. Frei's team analyzed the composition of the chrome isotopes in the rock and found that the oxygen isotopes reflect the content of the atmosphere.
