Browsing Earth and Environmental Sciences by Title
Now showing items 307-326 of 434
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Petrogenesis of Archean granitoids: Insights from inverse and forward modelling
(University of Waterloo, 2022-06-24)Archean granitoids are the earliest representation of continental crust on Earth. The Archean geological record is dominated by rocks of the tonalite–trondhjemite–granodiorite (TTG) suite, which are thought to have formed ... -
The Petrogenesis of Pseudocarbonatites in Bancroft Region, Southwestern Grenville Province
(University of Waterloo, 2022-02-15)Carbonatites are rare igneous rocks that form from fractionation of carbonate-rich, silica undersaturated magma. The petrogenesis of pseudocarbonatites (rocks that are similar to carbonatites, but without a clear mantle ... -
Petrogenesis of the Bissett Creek flake graphite deposit: Implications for regional graphite mineralization models in the Grenville Province, Ontario
(University of Waterloo, 2018-07-16)Graphite is a critical component of green and renewable energy technologies. In Ontario, graphite deposits are scattered throughout the pre-Grenvillian Laurentian Margin and the Composite Arc Belt of the Grenville Province. ... -
PETROLOGY, TECTONIC SETTING, AND REGIONAL IMPLICATIONS OF THE OPHIOLITIC LIUYUAN COMPLEX, NW CHINA
(University of Waterloo, 2023-01-03)Located along the southern margin of the Central Asian Orogenic Belt (CAOB), the mafic 290-280 Ma Liuyuan Complex stratigraphy and tectonic setting have been controversial for decades. Here, the results of a detailed field ... -
Phase Relations, Reaction Sequences and Petrochronology
(Mineralogical Society of America, 2017-02-01)Phase equilibria modelling has played a key role in enhancing our understanding of metamorphic processes. An important breakthrough in the last three decades has been the ability to construct phase diagrams by integrating ... -
Phosphorus and Nitrogen Cycling in the Mediterranean Sea: Circulation, biogeochemistry and anthropogenic forcing
(University of Waterloo, 2017-04-28)The Mediterranean Sea (MS) is an oligotrophic marine basin despite being semi-enclosed with unusually low inorganic phosphorus (P) and nitrogen (N) concentrations, and high nitrate (NO₃):phosphate (PO₄) ratios comparative ... -
Phosphorus Legacies and Water Quality Risks: A Vulnerability-Based Framework in Southern Ontario
(University of Waterloo, 2019-12-20)Excess phosphorus (P) loading increases the frequency of harmful algal blooms (HABs), posing severe threats to drinking water security and aquatic ecosystems. Efforts to reduce the inputs of P to Canadian agricultural soils ... -
Phosphorus retention and transformation in a dammed reservoir of the Thames River, Ontario: Impacts on phosphorus load and speciation
(Elsevier, 2022-02)Extensive efforts are underway to reduce phosphorus (P) export from the Lake Erie watershed. On the Canadian side, the Thames River is the largest tributary source of P to Lake Erie’s western basin. However, the role of ... -
Photosphere Tour Guide
(University of Waterloo, 2021-08-20)This document serves as a comprehensive guide for creating and implementing Virtual Reality (VR) into education at the post-secondary level, as well as recommendations for integrating course learning objectives in Virtual ... -
Physical and Geochemical Characterization of Two Wetlands in the Experimental Lakes Area, North-western Ontario, Canada
(University of Waterloo, 2012-09-27)Anthropogenic disruptions in the form of hydrological alterations, such as dam construction and the associated water diversions are a cause of much upheaval to local and regional ecosystems. Lake 626 within the Experimental ... -
Physical Hydrogeology and Impact of Urbanization at the Waterloo West Side: A Groundwater Modelling Approach
(University of Waterloo, 2000)In the last few decades protection of the environment has moved to the forefront of earth science research. Sustainable development is becoming more important to rapidly growing communities throughout southern Ontario ... -
The Physical Mechanisms of Microbiological Cellular Transport, Storage, and Metabolism of Aromatic Hydrocarbon-Degrading Soil Microbiota
(University of Waterloo, 2021-06-01)The Monod bioreaction equation, though justified from extensive practical use, has been found to have limited mechanistic basis (Enouy, Walton, et al., 2021). To attempt to gain a biological mechanistic representation of ... -
The pivotal role of angiogenesis in a multi-scale modeling of tumor growth exhibiting the avascular and vascular phases
(Elsevier, 2018-09-01)The mechanisms involved in tumor growth mainly occur at the microenvironment, where the interactions between the intracellular, intercellular and extracellular scales mediate the dynamics of tumor. In this work, we present ... -
Plastic debris in the Laurentian Great Lakes: A review
(Elsevier, 2015-03-01)Pollution by plastic debris is an increasing environmental concern in the Laurentian Great Lakes where it affects open-water, shoreline, and benthic environments. Open-water surveys reveal that in certain areas of the Great ... -
Plastic debris in the Laurentian Great Lakes: Classification, distribution and environmental drivers
(University of Waterloo, 2015-07-03)Pollution by plastic debris is an increasing environmental concern in the Laurentian Great Lakes: it affects open-water, shoreline, and benthic environments. Many plastics degrade slowly in the environment and may have ... -
Potential and Limitations of MCM-41 in Dechlorination Reactions
(University of Waterloo, 2007-04-27)The purpose of this thesis was to conduct preliminary research into the feasibility of using MCM-41 as a catalyst support material in the treatment of organochloride contaminated water. Specifically, the stability of MCM-41 ... -
A Preliminary Field Study to Examine the Potential of Hydrogeophysical Methods to Monitor Soil Moisture Dynamics in Quaternary Outwash Materials
(University of Waterloo, 2015-04-28)This thesis examines the capacity of a suite of near-surface geophysical techniques (i.e., ground-penetrating radar (GPR), electromagnetic induction (EMI) and electrical resistivity tomography (ERT)) to monitor soil moisture ... -
A priori discretization error metrics for distributed hydrologic modeling applications
(Elsevier, 2016-12-01)Watershed spatial discretization is an important step in developing a distributed hydrologic model. A key difficulty in the spatial discretization process is maintaining a balance between the aggregation-induced information ... -
A process-based stable isotope approach to carbon cycling in recently flooded upland boreal forest reservoirs
(University of Waterloo, 2002)Reservoirs impound and store large volumes of water and flood land. The water is used for electricity generation, irrigation, industrial and municipal consumption, flood control and to improve navigation. The ... -
Proterozoic zircon dates from auriferous zones at the Island Gold deposit: implications for late gold remobilization in the Superior Province
(University of Waterloo, 2024-02-13)The Island Gold deposit is a high-grade Archean orogenic gold deposit within the Michipicoten greenstone belt of the Superior Province. Hosted within the ~2750 Ma felsic to intermediate Wawa metavolcanic assemblage, gold ...