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Waghorn, Kate Alyse; Vadakkepuliyambatta, Sunil; Plaza-Faverola, Andreia; Johnson, Joel E; Bünz, Stefan; Waage, Malin

Journal: Scientific Reports

Lane, T.P.; Paasche, Øyvind; Kvisvik, B.; Adamson, K.R.; Rodés, Á.; Patton, Henry; Gomez, N.; Gheorghiu, D.; Bakke, J.; Hubbard, Alun Lloyd

Journal: Geophysical Research Letters

Petrini, Michele; Colleoni, Florence; Kirchner, Nina; Hughes, Anna L.C.; Camerlenghi, Angelo; Rebesco, Michele; Lucchi, Renata Giulia; Forte, Emanuele; Colucci, Renato R.; Noormets, Riko; Mangerud, Jan

Journal: Quaternary Science Reviews

Glasser, Neil F.; Roman, Matej; Holt, Tom O.; Žebre, Manja; Patton, Henry; Hubbard, Alun Lloyd

Journal: Geomorphology

Paiste, Kärt; Lepland, Aivo; Zerkle, Aubrey L.; Kirsimae, Kalle; Kreitsmann, Timmu; Mänd, Kaarel; Romashkin, Alexander E.; Rychanchik, Dimitry V.; Prave, Anthony R

Journal: Earth-Science Reviews

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great oxydation event

Photo of the month

May-June

This is shungite, a unique carbon-rich sedimentary rock from Russia that deposited 2 billion years ago. It holds clues about oxygen concentrations on Earth’s surface at that time. According to a new study in Nature Geoscience, with participation from CAGE,  there were elevated levels of oxygen at the time when the shungite was deposited.

This contradicts the widely-accepted models of Earth’s carbon and oxygen cycles, which predict that shungite should have been deposited at a time of rapid decrease in oxygen levels.

Why is this important?: “These new findings are also crucial for understanding the evolution of complex life.” according to this article in Eurekalert.org. 

Geology. Pretty awesome.

Photo: Aivo Lepland, NGU/CAGE.

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