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Denitrification--North Dakota; Aquifers--North Dakota; Groundwater--Pollution--North Dakota; Shale--North Dakota; Nitrates--Environmental aspects--North Dakota
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Electron Donor Potential Of Eastern North Dakota Shale Formations, Ryan J. Salinas Klapperich
Electron Donor Potential Of Eastern North Dakota Shale Formations, Ryan J. Salinas Klapperich
Theses and Dissertations
Research involving a network of in situ mesocosms (ISM) in North Dakota, Minnesota, and Iowa has revealed significant variation in the denitrification capacity of aquifers in different regions of these states. One aquifer in particular, the Elk Valley Aquifer (EVA) of east-central North Dakota, has the highest concentrations of electron (e) donors (organic carbon -0.4%, pyrite as S -0.4%, and ferrous iron -0.3%) within its sediments and the highest rates of denitrification. The sediments at all of the ISM sites were deposited as outwash during the last Wisconsinan glaciation (-12ka), yet their e· donor concentrations vary. I suggest that the …