Palaeoclimatology: Archaean atmosphere and climate |
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| Authors: | Kasting James F |
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| Institution: | Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16801, USA. kasting@geosc.psu.edu |
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| Abstract: | Ohmoto et al. argue that carbon dioxide was abundant in the late Archaean and early Proterozoic atmosphere and that methane was probably scarce, based on a reanalysis of the occurrence of siderite, FeCO3, in ancient rocks. Here I consider several factors that may undermine their conclusions. |
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