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Skip to Search Results- 16Stachel, Thomas (Earth and Atmospheric Sciences)
- 7Pearson, Graham (Earth and Atmospheric Sciences)
- 1Gleeson, Sarah (Earth and Atmospheric Sciences)
- 1Heaman, Larry (Earth and Atmospheric Sciences)
- 1Kjarsgaard, Bruce (Geological Survey of Canada)
- 1Luth, Robert (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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Implications of in situ zircon U-Pb, Lu-Hf, oxygen-isotope, and trace element geochemistry on the petrogenetic history of the northern Hogem batholith in the Quesnel terrane, north-central British Columbia, Canadian Cordillera
DownloadSpring 2022
The Cordilleran orogen of western Canada is a type example of accretionary tectonism and thus an ideal location to study continental growth by oceanic and continental arc magmatism and terrane accretion. Cordilleran Intermontane terranes are interpreted as accreted oceanic arcs that contributed...
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Geochemistry of diamonds and their mineral inclusions constraining the composition of the lithospheric mantle and recycling of crustal materials
DownloadFall 2022
Bimineralic eclogite xenoliths from Koidu have been extensively studied previously, but less attention has been directed towards diamondiferous eclogite xenoliths as well as eclogitic and peridotitic diamonds from this locality. To gain insight into the geologic history of the lithospheric mantle...
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Spring 2021
This research was motivated by a current lack of systematic information, pairing inclusion chemistry (major,minor, and trace element) to host diamond isotopic data (δ13C, δ15N, N abundance) regarding the Snap Lake kimberlitedyke. The Snap Lake kimberlite dyke is located on the southern Slave...
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Spring 2021
Diamonds, due to their inert and robust nature, encapsulate and preserve minerals, recording the mantle substrate in which they form. Forming in the subcontinental lithospheric mantle over a protracted period, diamonds provide snapshots of craton formation and mantle evolution over much of...
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The petrography and mineral chemistry of melt-intruded mantle xenoliths from the Chidliak kimberlite field, Baffin Island, Canada
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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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Spring 2020
The Pikoo kimberlites of east-central Saskatchewan are a relatively recent discovery, comprising at least ten discreet bodies thought to erupt through the Sask Craton, a small Archean microcontinent enclosed within the Paleoproterozoic Trans-Hudson Orogen. Since the Sask Craton also plays host...
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Spring 2020
Gahcho Kué is a diamond mine in the Northwest Territories of Canada that opened in 2016. This is the first study into the morphology, N systematics, and stable isotope (C and N) composition of the Gahcho Kué diamonds, and the mineral chemistry of the associated inclusions. The resulting data are...
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The composition of the lithospheric mantle beneath the Karowe Mine and its associated diamond sources in north-eastern Botswana
DownloadSpring 2019
This study presents the first comprehensive data on the recently developed Karowe diamond mine from the Orapa kimberlite cluster, which hosts mines such as Orapa, Damtshaa, and Letlhakane. The objectives of the study were to establish the compositional characteristics of the lithospheric mantle...
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Mineral inclusions in diamonds from Chidliak (Nunavut, Canada): constraining the diamond substrates
DownloadFall 2018
The Chidliak kimberlite pipe is located on the Hall Peninsula on Baffin Island in Nunavut. The first kimberlite in Chidliak was discovered in 2008. Previous studies (e.g., Hogberg et al., 2016) on Chidliak inclusion-free diamonds have suggested that 1) two diamond growth stages are recorded by...