Browsing Student Research Day by Author "Nelson, Trevor J."
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Color Variation in Gemmy Amethyst : The Role of Contaminant Diffusion
Ihinger, Phillip D.; Nelson, Trevor J.; Chandler, Makayla D.; Noffke, Tyson S. (2018-04)The role of contaminant diffusion purple quartz, otherwise known as amethyst, is commonly known for its occurrence as clusters of gemmy crystals that grow on the walls of fluid-filled fractures and vugs in hydrothermal ... -
Rhombohedral vs. Prism Sector Zones in Hydrothermal Quartz Crystals : Implications for Growth Dynamics
Noffke, Tyson S.; Nelson, Trevor J.; Ihinger, Phillip D. (2019-05)Gemmy hydrothermal quartz crystals typically exhibit each of their six prism and six rhombohedral crystal faces. However, discerning which of the crystal faces were actively growing at any given time during construction ... -
U-Pb Geochronology of Felsic Plutons in Neoarchean Sturgeon Lake Greenstone Belt, Ontario, Canada
Nelson, Trevor J.; Lodge, Robert W.D. (2021-04)The emplacement of granitoid plutons in Archean granite-greenstone belt terranes can provide a more complete magmatic and deformational history than the volcanic and sedimentary rocks. Granitoid plutons in greenstone belts ...