When using pyrite to understand Earth's ocean and atmosphere: Think local, not global

ScienceDaily
Feb 27, 2021, 8:33 am94 pts
Scientists have long used information from sediments at the bottom of the ocean to reconstruct the conditions in oceans of the past. But a study raises concerns about the common use of pyrite sulfur isotopes to reconstruct Earth's evolving oxidation state. These signals aren't the global fingerprint of oxygen…

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