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Skip to Search Results- 3Pearson, Graham (Earth and Atmospheric Sciences)
- 3Stachel, Thomas (Earth and Atmospheric Sciences)
- 2Creaser, Robert (Earth and Atmospheric Sciences)
- 2Kjarsgaard, Bruce (Geological Survey of Canada)
- 1Creaser, Robert A. (Earth and Atmospheric Sciences)
- 1D. Graham Pearson (Earth and Atmospheric Sciences)
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Spring 2022
This work presents new petrography, mineral major and trace element chemistry, whole rock major and trace element chemistry, whole rock Sr-Nd-Hf isotope composition, and phlogopite Rb-Sr isotope geochronology for the Mel kimberlite, Nunavut and Dharma kimberlite, Northwest Territories. This data...
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The petrography and mineral chemistry of melt-intruded mantle xenoliths from the Chidliak kimberlite field, Baffin Island, Canada
DownloadFall 2021
The nature of kimberlitic melts at mantle depths and their interaction with mantle wall-rocks is poorly constrained. This is due to the scarcity of mantle xenoliths and xenocrysts that have preserved this interaction without disaggregating during their transport to Earth’s surface. This thesis...
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Behaviour of Ore-Forming Elements in the Sub-Continental Lithospheric Mantle Below the Slave Craton
DownloadFall 2020
The transport and depositional controls of ore-forming elements such as Ag, Au, Bi, Cu, Mo, Pb, Pt, and Zn has been extensively studied in crustal environments, but the behaviour of these elements within Earth’s mantle require further study. This thesis presents new petrographic and geochemical...
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Spring 2019
Biostratigraphy brackets the deposition of the Gordondale and Poker Chip Member of Lower Jurassic Fernie Formation between Late Hettangian and Early Toarcian stages. Through employing Re-Os chronostratigraphy we have expanded upon these previous age estimates by providing high-precision...
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The 1.9 Ga Winnipegosis Komatiite: Implications for Earth Accretion, Mantle Dynamics, and Komatiite Formation
DownloadSpring 2018
Komatiites are high temperature, high MgO lavas that have the potential to provide geochemical and thermal insights into the evolution of the Earth's mantle. However, komatiite studies are frequently hampered by the altered nature of all komatiites and the presence of large gaps in the komatiite...
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The Quandary of the Sask Craton: Origin and Evolution of the Lithospheric Mantle beneath the Sask Craton
DownloadFall 2018
Mantle xenoliths from the Cretaceous (~106 to ~95 Ma) kimberlites at Fort à la Corne (FALC) present a unique opportunity to study the lithospheric mantle beneath the newly recognised Sask Craton. The Sask Craton, a small terrane with Archean (3.2 - 2.5 Ga) crustal ages, is enclosed in the...
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Probing the Mantle Cargo of Kimberlites – A Geochemical Investigation of Different Mineral Components and Evaluation of their Potential as Petrogenetic and Exploration Tools
DownloadSpring 2017
This thesis applies microanalytical tools to the geochemical investigation of different mineral components in the volcanic rock kimberlite. This work significantly advances the application of one of these tools, deep UV (193 nm) laser ablation inductively coupled plasma mass spectrometry...
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Spring 2016
The composition of primary kimberlitic melts has been the subject of much debate because of the heterogeneous nature of kimberlites, their ubiquitous modification by mantle and crustal contamination, their high susceptibility to alteration during and after emplacement, and the fact that the melts...
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The Age and Origin of Lithospheric Mantle Beneath Central Victoria Island and Parry Peninsula, Northern Canada
DownloadSpring 2016
New mineral major and trace element chemistry, bulk rock major element chemistry plus bulk rock and olivine PGE-Re-Os isotope data are presented for kimberlite-borne mantle xenoliths from Central Victoria Island, Nunavut and Parry Peninsula, Northwest Territories. The data, along with new and...
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Further Re-Os Arsenopyrite Geochronology from Selected Meguma Au Deposits, Meguma Terrane, Nova Scotia: Possible Evidence for a Protracted Gold-forming System
DownloadFall 2015
The Meguma terrane, Nova Scotia, is dominated by two rock types; regionally deformed and metamorphosed Cambro-Ordovician metasedimentary rocks and ca. 380-370 Ma meta- to peraluminous granites. The metasedimentary rocks host numerous orogenic-type, vein-hosted gold deposits which occur throughout...