Browsing University of Waterloo by Author "Owens, Jeremy"
Now showing items 1-4 of 4
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Assessing the Effect of Large Igneous Provinces on Global Oceanic Redox Conditions Using Non-traditional Metal Isotopes (Molybdenum, Uranium, Thallium)
Kendall, Brian; Andersen, Morten B.; Owens, Jeremy (American Geophysical Union and John Wiley and Sons, Inc., 2021-01-08)Large igneous provinces (LIPs) have occurred episodically throughout Earth’s history, with the most severe events causing profound disturbances to Earth’s climate and biosphere that likely influenced the course of metazoan ... -
Fully oxygenated water columns over continental shelves before the Great Oxidation Event
Ostrander, Chadlin; Nielsen, Sune; Owens, Jeremy; Kendall, Brian; Gordon, Gwyneth; Romaniello, Stephen; Anbar, Ariel (Nature, 2019-02-25)Late Archaean sedimentary rocks contain compelling geochemical evidence for episodic accumulation of dissolved oxygen in the oceans along continental margins before the Great Oxidation Event. However, the extent of this ... -
Multiple negative molybdenum isotope excursions in the Doushantuo Formation (South China) fingerprint complex redox-related processes in the Ediacaran Nanhua Basin
Ostrander, Chadlin; Swapan, Sahoo; Kendall, Brian; Jiang, Ganqing; Planavsky, Noah; Lyons, Timothy; Nielsen, Sune; Owens, Jeremy; Gordon, Gwyneth; Romaniello, Stephen; Anbar, Ariel (Elsevier, 2019-09-15)The Ediacaran Doushantuo Formation offers one of the most complete and extensively studied records of end- Neoproterozoic biotic and environmental change. Here, we report multiple coeval negative molybdenum (Mo) ... -
New constraints on mid-Proterozoic ocean redox from stable thallium isotope systematics of black shales
Li, Zijian; Cole, Devon B.; Newby, Sean M.; Owens, Jeremy; Kendall, Brian; Reinhard, Christopher (Elsevier, 2021-12-15)Stable thallium (Tl) isotope data from organic-rich siliciclastic sedimentary rocks have the potential to track ocean redox state on a broad scale. Here, we report new Tl isotope data from the Mesoproterozoic Velkerri ...