Constraints on Paleoproterozoic atmospheric oxygen levels [Evolution]

The oxygenation of Earth’s surface environment dramatically altered key biological and geochemical cycles and ultimately ushered in the rise of an ecologically diverse biosphere. However, atmospheric oxygen partial pressures (pO2) estimates for large swaths of the Precambrian remain intensely debated. Here we evaluate and explore the use of carbonate cerium...
Source: Proceedings of the National Academy of Sciences - Category: Science Authors: Tags: Physical Sciences Source Type: research