Earth's Billion-Year Balancing Act
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https://phys.org/news/2024-02-earth-billion-year.html <-- shared technical article
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https://doi.org/10.1130/GSATG423C.1 <-- shared paper
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#geology #geologichistory #BoringBillion #BalancedBillion #earth #earthhistory #life #lifeonearth #atmosphere #oxygenation #structuralgeology #tectonics #complexlife #eukaryote #platetectonics #crust #mantle #core

Ancient #ocean oxygenation timeline revealed
https://phys.org/news/2024-04-ancient-ocean-oxygenation-timeline-revealed.html

Late Paleozoic #oxygenation of marine environments supported by #dolomite U-Pb dating https://www.nature.com/articles/s41467-024-46660-7

"Their record indicates a dramatic increase in the oxygenation of the #oceans during the Late #Paleozoic era, hundreds of millions of years after the emergence of the first #animals. This aligns with other evidence... supports the hypothesis that animals have evolved in oceans that were mostly oxygen-limited"

#Ediacaran #fossils reveal origins of #biomineralization that led to expansion of life on Earth
https://phys.org/news/2023-09-ediacaran-fossils-reveal-biomineralization-expansion.html

Constraining the onset and environmental setting of #metazoan biomineralization https://www.sciencedirect.com/science/article/pii/S0012821X23003497

"#Cloudina originated in a low #oxygen environment with periods of notably higher #oxygenation... it was not a case of sustained oxygenation that resulted in the appearance of #skeletonization... high #carbonate concentrations in the ocean were necessary"