A New Depositional Framework for Massive Iron Formations after the Great Oxidation Event

Geochemistry Geophysics Geosystems ◽

10.1029/2020gc009113 ◽

2021 ◽

Author(s):

Athena Eyster ◽

Latisha Brengman ◽

Claire I. O. Nichols ◽

Zoe Levitt ◽

Julia Wilcots ◽

...

Keyword(s):

Great Oxidation Event ◽

Iron Formations

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Post‐Great Oxidation Event Orosirian–Statherian iron formations on the São Francisco craton: Geotectonic implications

Island Arc ◽

10.1111/iar.12300 ◽

2019 ◽

Vol 28 (4) ◽

Cited By ~ 2

Author(s):

Carlos A. Rosière ◽

Andrey Bekker ◽

Vassily K. Rolim ◽

João Orestes S. Santos

Keyword(s):

Great Oxidation Event ◽

Iron Formations

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A New Depositional Framework for Massive Iron Formations after The Great Oxidation Event

10.1002/essoar.10504298.1 ◽

2020 ◽

Author(s):

Athena Eyster ◽

Latisha Brengman ◽

Claire Isobel O'Bryen Nichols ◽

Zoe Levitt ◽

Kristin D Bergmann

Keyword(s):

Great Oxidation Event ◽

Iron Formations

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Widespread deposition of greenalite to form Banded Iron Formations before the Great Oxidation Event

Precambrian Research ◽

10.1016/j.precamres.2020.105619 ◽

2020 ◽

Vol 339 ◽

pp. 105619 ◽

Cited By ~ 2

Author(s):

Janet R. Muhling ◽

Birger Rasmussen

Keyword(s):

Banded Iron Formations ◽

Great Oxidation Event ◽

Iron Formations

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Earth’s Middle Ages: What Came after the GOE

10.23943/princeton/9780691145020.003.0009 ◽

2017 ◽

Author(s):

Donald Eugene Canfield

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Middle Ages ◽

Atmospheric Oxygen ◽

Iron Formation ◽

Banded Iron Formation ◽

Dissolved Iron ◽

Great Oxidation Event ◽

Low Levels ◽

Substantial Rise

This chapter considers the aftermath of the great oxidation event (GOE). It suggests that there was a substantial rise in oxygen defining the GOE, which may, in turn have led to the Lomagundi isotope excursion, which was associated with high rates of organic matter burial and perhaps even higher concentrations of oxygen. This excursion was soon followed by a crash in oxygen to very low levels and a return to banded iron formation deposition. When the massive amounts of organic carbon buried during the excursion were brought into the weathering environment, they would have represented a huge oxygen sink, drawing down levels of atmospheric oxygen. There appeared to be a veritable seesaw in oxygen concentrations, apparently triggered initially by the GOE. The GOE did not produce enough oxygen to oxygenate the oceans. Dissolved iron was removed from the oceans not by reaction with oxygen but rather by reaction with sulfide. Thus, the deep oceans remained anoxic and became rich in sulfide, instead of becoming well oxygenated.

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