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At the precipice of the Great Oxygen Crash: Redox-sensitive metal geochemistry in the Paleoproterozoic Onega Basin
DownloadSpring 2021
The middle Paleoproterozoic era (~2200–1800 million years ago) was host to some of the most significant perturbations in Earth’s elemental cycles, including the largest ever excursion of carbon isotope ratios in sedimentary rocks, known as the Lomagundi-Jatuli Event. This event has been linked to...
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Fall 2018
Banded iron formations (BIF) are a key chemical sedimentary record for examining the evolution of the early oceans, atmosphere, and biosphere. While the classic model suggests that BIF were deposited by either anoxygenic photoferrotrophs or oxygen producing cyanobacteria, recent studies have...
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2015-01-01
A. Bahadori, M. Mahmoudi, A. Nouri
Heavy-oil development is becoming increasingly important because of the continuous decline in conventional-oil production. For heavy-oil reservoirs, the oil viscosity usually varies dramatically during production processes such as in thermal processes. When producing heavy oil, the high viscosity...
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Fall 2019
Surface mining in the Athabasca Oil Sands region has disturbed approximately 895 km2 of boreal forest, all of which will need to be reclaimed to a state that is both representative of, and as productive of the surrounding boreal forest. However, much remains to be understood regarding the effects...