Rahaman, Waliur; Smik, Lukas; Köseoğlu, Deniz; Lathika, N.; Tarique, Mohd; Thamban, Meloth; Haywood, Alan; Belt, Simon T.; Knies, Jochen
Journal: Earth and Planetary Science Letters
Faust, Johan Christoph; Stevenson, Mark A.; Abbott, Geoffrey D.; Knies, Jochen; Tessin, Allyson; Mannion, Isobel; Ford, Ailbe; Hilton, Robert; Peakall, Jeffrey; März, Christian
Journal: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Greco, Mattia; Meilland, Julie; Zamelczyk, Katarzyna; Rasmussen, Tine Lander; Kucera, Michal
Journal: Polar Research
Margari, Vasiliki; Skinner, Luke C.; Menviel, Laurie; Capron, Emilie; Rhodes, Rachael H; Mleneck-Vautravers, Maryline J.; Ezat, Mohamed; Martrat, Belen; Grimalt, Joan O.; Hodell, David A; Tzedakis, Polychronis
Journal: Communications Earth & Environment
Yao, Haoyi; Niemann, Helge; Panieri, Giuliana
Journal: Quaternary Science Reviews
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.