Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Volcanic Stratigraphy And Lithogeochemistry Of The Northern Section Of The Lynn Lake Greenstone Belt: Implications For Regional Geodynamics And Metallogenesis, Michael W.P. Glendenning
Volcanic Stratigraphy And Lithogeochemistry Of The Northern Section Of The Lynn Lake Greenstone Belt: Implications For Regional Geodynamics And Metallogenesis, Michael W.P. Glendenning
Electronic Theses and Dissertations
The MacLellan Au-Ag deposit, located in the Paleoproterozoic Lynn Lake greenstone belt of the Trans-Hudson Orogen, Manitoba, is hosted by a package of plagioclase-amphibole, chlorite-amphibole, and quartz-plagioclase-biotite schists that are considered to be representative of the geodynamic evolution of the northern section of the Lynn Lake greenstone belt. A combination of field and petrographic observations and high-precision trace element chemistry have identified the protoliths to the host rock sequence as transitional aluminous basalt with subordinate picrite and biotite-altered aluminous basalt, respectively. The Th-Nb-La-REE systematics of these rocks are consistent with a rifted continental margin environment. Volcanic rocks with similar Th-Nb-La-REE …
Bio-Physicochemical Effects Of Gamma Irradiation Treatment For Naphthenic Acids In Oil Sands Fluid Fine Tailings, Ryan Nicholas Boudens
Bio-Physicochemical Effects Of Gamma Irradiation Treatment For Naphthenic Acids In Oil Sands Fluid Fine Tailings, Ryan Nicholas Boudens
Electronic Theses and Dissertations
Naphthenic acids (NA) are components of most petroleum, including those found in the Athabasca oil sands and in some systems are considered to be persistent compounds. Their presence in the environment can pose significant problems since freshly released NAs are toxic to aquatic organisms. In this investigation gamma irradiation (GI) was used to reduce the toxicity and concentration of NAs in oil sand tailings and assess the impact on biogeochemical processes. GI reduced NA concentration by up to 97% in Oil Sands Process Water (OSPW) and 85% in fluid fine tailings (FFT). Dissolved oxygen flux was stimulated directly in the …