Browsing Geological Sciences and Geological Engineering, Department of by Title
Now showing items 44-63 of 194
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An early Permian subtropical carbonate system : sedimentology and diagenesis of the Raanes and Great Bear Cape formations, Sverdrup Basin, Arctic Canada
(2007-08-29)The Early Permian (Sakmarian to Kungarian) Raanes and Great Bear Cape formations of the Sverdrup Basin were deposited at a time of ocean cooling, and are interpreted to reflect a subtropical setting. Pelmatozoans, bryozoans, ... -
Ediacaran Discs: Elucidating the Form and Function of the Discoid Fossils at the Root of Metazoan Evolution
Recent suggestions that Ediacaran discs, the most common and ubiquitous fossils of the Ediacara biota, represent the holdfasts of fronds has led them to be relatively unstudied in recent years. This thesis utilizes ... -
Ediacaran Fronds From the Mistaken Point Assemblage, Newfoundland
(2009-05-06)The Ediacara Biota is a distinct group of soft-bodied organisms that flourished in late Precambrian (Ediacaran) oceans. The succession at Mistaken Point, Newfoundland, contains the most extensive collection of Ediacaran ... -
Ediacaran rangeomorphs in the Mistaken Point biota, Newfoundland
(2016-01-21)The Ediacara biota is a cosmopolitan assemblage of the first macroscopic multicellular soft-bodied fossil organisms (Late Neoproterozoic, 575 – 542 Ma). The Avalon Peninsula of Newfoundland preserves entire communities ... -
Effect of Tailings Mineralogy and Infiltration Water Chemistry on Arsenic Release From Historic Gold Mine Tailings
(2010-10-27)The existence of small-scale gold mining in Nova Scotia between 1868 and 1942 has resulted in many high arsenic (As) tailings areas in the province, some of which are near rural/urban areas and are used for recreational ... -
Effects of Sampling Interval on the Frequency-Magnitude Relationship of Rockfalls Detected from Terrestrial Laser Scanning using Semi-Automated Methods
(2017-02-13)Using change detection and semi-automated identification methods, it is possible to extract detailed rockfall information from terrestrial laser scanning data to build a database of events, which can be used in the development ... -
End Frasnian calcimicrobial-stromatoporoid carbonate reefs, Western Canada Sedimentary Basin
(2010-12-21)The Late Devonian was a significant period in Phanerozoic reef evolution. Reef complexes reached their acme in the Middle Devonian and then declined in numbers and complexity thereafter. This change was accompanied by a ... -
Environmental Characterization of Waste Rock and Tailings from a Carbonatite- Hosted Niobium and Rare Earth Element Deposit
Rare earth elements (REEs) have become essential in green energy and high-tech applications and the development of new REE mines is expected in the coming years. There is currently little published research on the behaviour ... -
Environmental Reconstructions From Structures and Fabrics Within Thick Mudstone Layers (Fluid Muds), Tilje Formation (Jurassic), Norwegian Continental Shelf
(2013-09-16)The Jurassic Tilje Formation located on the Norwegian continental shelf contains many thick (>10 mm) and macroscopically homogenous mudstone layers. These mudstone layers are interpreted to have accumulated rapidly from ... -
EPB Excavation and Conditioning of Cohesive Mixed Soils: Clogging and Flow Evaluation
When shield tunnels are being excavated along varying geological conditions, it is essential to understand the behaviour of the material being excavated, as it influences excavation speed and ground stability, in addition ... -
Evaluating the Surficial Geochemical Expressions in Soil, and Tree Cores Surrounding an LCT Pegmatite at Pakeagama Lake, Ontario
The Pakeagama Lake Pegmatite is a complex type, petalite subtype Li-Cs-Ta (LCT) pegmatite, located in Northwestern Ontario, Canada, at the border of the Berens River and Sachigo subprovinces of the Archean Superior ... -
The Evolution of the Los Negritos Porphyry Copper Deposit, Coquimbo, Chile: Geological, Geochronological, Mineralogical and Geochemical Evidence
(2016-09-10)The Los Negritos porphyry copper deposit is located ~ 4 km to the northeast of Carmen de Andacollo Mine in the Chilean Cretaceous metallogenic belt. The mineralization is hosted in andesite of the Quebrada Marquesa Formation ... -
Examination of Geological Influence on Machine Excavation of Highly Stressed Tunnels in Massive Hard Rock
(2008-09-27)A combined geological and rock mechanics approach to tunnel face behaviour prediction, based on improved understanding of brittle fracture processes during TBM excavation, was developed to complement empirical design and ... -
An Examination of Structural Constraints on Rockfall Behaviour using LiDAR Data
Rockfall hazards along railway corridors in western Canada increase the risk of train derailment, which could lead to loss of life, infrastructure, and environmental damage. In some cases, such rockfalls exhibit pre-failure ... -
An experimental study of liquid-phase separation in the systems Fe2SiO4-Fe3O4-KAlSi2O6-SiO2-H2O, Fe3O4-KAlSi2O6-SiO2-H2O and Fe3O4-Fe2O3-KAlSi2O6-SiO2-H2O with or without P, S, F, Cl or Ca0.5Na0.5Al1.5Si2.5O8: Implications for immiscibility in volatile-rich natural magmas
(2012-04-11)Abstract Isobaric (200 MPa) experiments have been performed to investigate the effects of H2O alone or in combination with P, S, F or Cl on the phase relations and elemental and oxygen isotopic partitioning between ... -
An Exploration of Rockfall Modelling through Game Engines
(2016-04-29)The Railway Ground Hazards Research Project (RGHRP) was developed to study and mitigate geotechnical hazards affecting the Canadian railways. A specific target area for this project is the White Canyon area in southwestern ... -
Facies Architecture and Stratigraphy of Tidal Ridges in the Eocene Roda Formation, Northern Spain
(2011-05-02)ABSTRACT The Eocene Roda Formation in northern Spain documents the deposits from a range of coastal depositional environments. These include alluvial plains, distributary channels, mouth bars, upper to lower-shorefaces, ... -
Fe and Mg isotopic compositions of clay minerals from the environs of the McArthur River uranium deposit, Saskatchewan, Canada
(2015-09-12)Iron and Mg isotopic composition of alteration minerals from the environs of the McArthur River uranium deposit Zone 4 in the Athabasca Basin are the main focus of this project. Iron isotopic signatures can be used to ... -
Fibroferrite: crystallographic, optical and synthesis experiments
(2010-05-07)Fibroferrite [Fe(OH)SO4•5H2O] is a product of the AMD (acid mine drainage) process and forms by chemical weathering and oxidation of iron sulfides in hydrothermal and magmatic ore deposits. The present work consists of two ... -
Fluid Evolution and Structural Control on Uranium Deposits in Successor Basins in Northern Canada and Northern Australia
(2012-08-14)Uranium deposits associated with Paleoproterozoic successor basins were investigated using structural, petrographic, geochronological and geochemical relationships to understand the character and timing of ore-forming ...