The Great Oxidation Event expanded the genetic repertoire of arsenic metabolism and cycling
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2001063117
Abstract: Significance The oxygenation of the atmosphere about 2.4 billion years ago remodeled global cycles of toxic, redox-sensitive metal(loids), including that of arsenic, which must have represented a cataclysm in the history of life. Our understanding… read more here.
Keywords: oxidation event; great oxidation; arsenic resistance; event expanded ... See more keywords
Rapid timescale for an oxic transition during the Great Oxidation Event and the instability of low atmospheric O2
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2205618119
Abstract: Significance Understanding the rise of atmospheric oxygen on Earth is important for assessing precursors to complex life and for evaluating potential future detections of oxygen on exoplanets as signs of extraterrestrial biospheres. However, it is… read more here.
Keywords: rise; oxic transition; great oxidation; rapid timescale ... See more keywords
Searching for the Great Oxidation Event in North America: A Reappraisal of the Huronian Supergroup by SIMS Sulfur Four-Isotope Analysis.
Sign Up to like & getrecommendations! Published in 2018 at "Astrobiology"
DOI: 10.1089/ast.2017.1722
Abstract: Sedimentological observations from the Paleoproterozoic Huronian Supergroup are suggested to mark the rise in atmospheric oxygen at that time, which is commonly known as the Great Oxidation Event (GOE) and typically coupled with a transition… read more here.
Keywords: transition; oxidation event; great oxidation; mass ... See more keywords
Post‐Great Oxidation Event Orosirian–Statherian iron formations on the São Francisco craton: Geotectonic implications
Sign Up to like & getrecommendations! Published in 2019 at "Island Arc"
DOI: 10.1111/iar.12300
Abstract: The protocratonic core of the São Francisco craton assembled during the 2.1–2.0 Ga Transamazonian orogeny. Orosirian Fe‐rich sequences that extend from the northwestern border of the São Francisco protocraton (Colomi Group) to the southeast under the… read more here.
Keywords: iron; iron formations; great oxidation; oxidation event ... See more keywords
Destabilization of deep oxidized mantle drove the Great Oxidation Event
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.abg1626
Abstract: The rise of Earth’s atmospheric O2 levels at ~2.4 Ga was driven by a shift between increasing sources and declining sinks of oxygen. Here, we compile recent evidence that the mantle shows a significant increase… read more here.
Keywords: deep oxidized; oxidation; great oxidation; destabilization deep ... See more keywords
Two-billion-year-old evaporites capture Earth’s great oxidation
Sign Up to like & getrecommendations! Published in 2018 at "Science"
DOI: 10.1126/science.aar2687
Abstract: A strongly oxidizing Paleoproterozoic era Two billion years ago, marine sulfate concentrations were around one-third as high as modern ones, constituting an oxidizing capacity equivalent to more than 20% of that of the modern ocean-atmosphere… read more here.
Keywords: year old; great oxidation; billion year; earth ... See more keywords