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The Paleoproterozoic Nonacho Basin remains an enigmatic sedimentary unit in the south-western portion of the Rae craton, particularly when considering the geodynamic setting, age, provenance, and correlation with broadly coeval (meta-) sedimentary assemblages elsewhere in the craton. We present an update for the years 2019-2020 on thematic research in sedimentology, stratigraphy, and analysis of detrital provenance for the basin. Specifically, we provide: (i) an improved sedimentological and stratigraphic framework for the Nonacho Basin, including the recently recognized record of shallow-marine deposition therein; (ii) updated hypotheses regarding its correlation to other supracrustal rocks of similar vintage in the Rae Craton; and (iii) a work plan for ongoing analyses of U-Pb geochronology and Hf isotope systematics on detrital zircon recovered from the strata of the basin.
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Cu Isotopes in the Canadian Sub-Cratonic Lithospheric Mantle – a First Look
Presenter: Janina Czas
Copper isotope ratios are an important tool in tracing the sources and pathways of base metal forming fluids in the crust.
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Indicators of Gold Mineralization in the Yellowknife Greenstone Belt: A Lithogeochemistry and Mineralogy Study
Presenter: Laurén Langlois
In this study we aim to identify elements that can act as geochemical indicators within the Yellowknife greenstone belt that allow the discrimination of mineralized structures.
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Characterizing Uranium Mineralization in the Nonacho Basin, NWT
Presenter: Kerstin Landry
Two styles of U mineralization are associated with the Nonacho Basin: early U of the Hope Occurrence (northern basin) is disseminated in quartz-biotite-albite basement breccia, whereas later vein-hosted
