Browsing Geological Sciences and Geological Engineering, Department of by Title
Now showing items 144-163 of 209
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Origin and Geochemistry of Modern Bahamian Ooids
(2009-01-27)The Bahamian Archipelago is one of the few locations in the world where ooid formation is actively occurring. Ooid cortices from six locations in the region were incrementally dissolved and analyzed for 14C, δ18O, δ13C, ... -
Origin and Significance of Middle Ordovician and Mississippian Calcarenites
(2014-12-02)Calcarenites are common throughout geologic history, but the range of depositional settings and conditions under which they form is poorly constrained. This study compares physically structured calcarenites in the Mississippian ... -
Origin of the Paleoproterozoic Denault Dolomite, Labrador.
(2009-01-08)The Denault Formation (2.1-1.9 Ga) outcrops in the Labrador Trough, northeastern Quebec and western Labrador. The Denault crops out around the town of Schefferville and at Marion Lake, fifty kilometers east-northeast of ... -
Origin of Visean (Mississippian) Frobisher Group Coated Grainstone Shoals in the Williston Basin: Deposition and Diagenesis
The Frobisher Beds of southeastern Saskatchewan are part of an extensive conventional oil and gas play hosted in grainy carbonate rocks, long interpreted as marine oolites. This sedimentological and diagenetic study of ... -
Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada
(2016-06-14)Tetradiids are a group of colonial, tubular fossils that occur globally in Middle to Upper Ordovician strata. Tetradiids were first described as a type of tabulate coral; however, based on their four-fold symmetry, division, ... -
Paragenesis and fluid history of the Karku unconformity-uranium deposit, Pasha-Ladoga Basin, Western Russia
(2012-09-12)The Karku unconformity-type uranium deposit is located in the Proterozoic Pasha-Ladoga Basin in western Russia. The deposit is located in basinal sandstones near a reverse fault that offsets the unconformable contact with ... -
Paragenesis of Gold Mineralization and Integrated Exploration Techniques of the Kiyuk Lake Project, Kivalliq Region, Nunavut, Canada
Exploration for gold in Nunavut has primarily focused in Archean greenstone belts in the north and coastal regions of the territory, resulting in large areas of unexplored terrain. The Kiyuk Lake property is located in the ... -
Petrogenesis and Metallogenesis of the Ultramafic Layered North Lac Des Iles Intrusion in the Lac Des Iles Complex, Ontario, Canada
A detailed petrologic and metallogenic study was conducted on the eastern flank of the Northern Ultramafic Centre (NUC) of the North Lac des Iles Complex (North LDIC) to understand the petrogenesis of cyclically layered ... -
Petrology of the non-mineralized Wheeler River sandstone-hosted alteration system and the Eagle Point and Millennium basement-hosted unconformity-related uranium deposits, Athabasca Basin, Saskatchewan: implications for uranium exploration
(2009-10-06)A study of the Millennium and Eagle Point basement-hosted deposits was conducted to obtain a comprehensive understanding of the alteration in these two atypical uraniferous systems and to apply these findings in formulating ... -
Phosphorites, Glass Ramps and Carbonate Factories: The Evolution of an Epicontinental Sea and a Late Palaeozoic Upwelling System (Phosphoria Rock Complex)
(Wiley, 2020-03-11)The Permian Phosphoria Rock Complex of the western USA contains an enigmatic assemblage of bioelemental rocks (i.e. phosphorites and cherts) that accumulated in a depositional system with no modern analogue. This study ... -
Pleistocene aeolianites at Cape Spencer, South Australia; record of a vanished inner neritic cool-water carbonate factory
(2016-02-17)Aeolianites are integral components of many modern and ancient carbonate depositional systems. Southern Australia contains some of the most impressive and extensive late Cenozoic aeolianites in the modern world. Pleistocene ... -
Process Sedimentology and Three-Dimensional Facies Architecture of a Fluvially Dominated, Tidally Influenced Point Bar: Middle McMurray Formation, Lower Steepbank River Area, Northeastern Alberta, Canada
(2012-01-30)Within the middle McMurray exposures along the Steepbank River (Steepbank River Outcrops 3 and 4), nine recognized facies can be divided into three genetically related groups: sand-dominated facies, inclined heterolithic ... -
Protolith Affiliation and Tectonometamorphic Evolution of the Gurla Mandhata Core Complex, NW Nepal Himalaya
Migmatite-cored gneiss domes in the Himalaya are valuable structures that expose the mid-crust, allowing for the investigation of tectonic and structural processes governing the evolution of the Himalayan orogen. Located ... -
The Provenance and Geochemical Alteration of Bermudan Eolianites
(2016-10-01)Large calcareous eolianites cover the remote island of Bermuda, accounting for more than 90% of the limestone bedrock. This study examines the sedimentology and geochemistry of these eolianites to better understand Pleistocene ... -
Provenance of Holocene Calcareous Aeolianites, Eastern South Australia
(2016-10-14)The southeastern coast of South Australia contains a spectacular and world-renown suite of Quaternary calcareous aeolianites. This study is focused on the provenance of components in the Holocene sector of this carbonate ... -
Provenance, mineralogy, geochemistry, geochronology and Pb isotope systematics of meta-siliciclastic rocks in the Mesoproterozoic Upper Vazante Sequence, Brazil: Implications for metal sources and base metal metallogeny
The objective of this research is to investigate the origin and evolution of meta-siliciclastic rocks within the Mesoproterozoic Upper Vazante Sequence (1300 to 1100 Ma) in order to improve understanding of metal sources ... -
Reinterpretation of the Ambient Paleoenvironmental Redox Conditions and Timing of Mineralization at SEDEX Zn-Pb Deposits in the Howard’s Pass District, Yukon
(2015-11-26)The Howard’s Pass district (HPD) of sedimentary exhalative (SEDEX) Zn-Pb deposits is located in the Selwyn basin, Yukon, and comprises 14 Zn-Pb deposits that contain an estimated 28 Mt of Zn+Pb metals. Semi-massive to ... -
Relating Ediacaran Fronds
(Cambridge University Press, 2017)Ediacaran fronds are key components of terminal-Proterozoic ecosystems. They represent one of the most widespread and common body forms ranging across all major faunal localities and time slices postdating the Gaskiers ... -
Relationship Between Oceanography and Brachiopod Geochemistry; eastern Great Australian Bight
(2009-02-02)Determination of water masses and circulation in the eastern Great Australian Bight, in conjunction with analysis of δ18O values and trace element concentrations in the articulated brachiopod Anakinetica cumingi, indicate ... -
Reliability of Stress Induced Damage Predictions in Hard Rocks With Continuum and Discontinuum Numerical Modelling Approaches
The use of underground repositories known as deep geological repositories (DGR) is globally accepted to be the best solution for long term storage of nuclear waste. In combination with different types of engineered barriers, ...