Very promising siderite deposit in Argentina. (all pictures: Joep van Dijk / ETH Zurich / from van Dijk J, et al, Nat. Geosc., 2020)
Very promising siderite deposit in Argentina. (all pictures: Joep van Dijk / ETH Zurich / from van Dijk J, et al, Nat. Geosc. Hot and humid: Using minerals from ancient soils, ETH researchers are reconstructing the climate that prevailed on Earth some 55 million years ago. Their findings will help them to better assess how our climate might look in the future. Between 57 and 55 million years ago, the geological epoch known as the Paleocene ended and gave way to the Eocene. At that time, the atmosphere was essentially flooded by the greenhouse gas carbon dioxide, with concentration levels reaching 1,400 ppm to 4,000 ppm.
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