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Evidence that the GOE was a prolonged event with a peak around 1900 Ma

Citation

Large, RR and Hazen, RM and Morrison, SM and Gregory, DD and Steadman, JA and Mukherjee, I, Evidence that the GOE was a prolonged event with a peak around 1900 Ma, Geosystems and Geoenvironment, 1, (2) Article 100036. ISSN 2772-8838 (2022) [Refereed Article]


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DOI: doi:10.1016/j.geogeo.2022.100036

Abstract

The great oxygenation event (GOE), the first of two major rises in atmospheric oxygen in Earth history, was initially placed near the Archean-Proterozoic boundary ( ∼2500 Ma). More recently, the position of the GOE has been moved to between 2500 and 2300 Ma so as to coincide with the loss of the MIF sulfur isotope signal due to the creation of the Earth’s ozone layer at that time. Here we present a revised interpretation of the history of atmospheric oxygen in the Archean and Proterozoic, based on a multi- geochemical proxy approach. Integration of a large database of analyses of redox sensitive elements in sedimentary pyrite (Se, Co, Mo), the matrix of black shales (U, Mo), and the temporal evolution of redox sensitive minerals, suggest Earth’s first oxygenation was prolonged, reaching a peak between 20 0 0 and 1700 Ma. Rather than a relatively short-lived event from 2500 to 2300 Ma, we suggest an alternative profile for Earth’s atmospheric O 2 , i.e., an unsteady start to the rise in oxygen around 2700 Ma that undulated for approximately a billion years, reaching a peak around 1900 Ma before a plunge in the Proterozoic Eon after 1700 Ma.

Item Details

Item Type:Refereed Article
Keywords:great oxygenation event, pyrite proxy, Se/Co ratio, MIF-S, deep time
Research Division:Earth Sciences
Research Group:Other earth sciences
Research Field:Earth system sciences
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the earth sciences
UTAS Author:Large, RR (Professor Ross Large)
UTAS Author:Steadman, JA (Mr Jeffrey Steadman)
UTAS Author:Mukherjee, I (Dr Indrani Mukherjee)
ID Code:150352
Year Published:2022
Deposited By:CODES ARC
Deposited On:2022-06-09
Last Modified:2022-09-20
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