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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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Kinematics and Timing of Shear Zones in the Nonacho Lake Area: Preliminary Results
Presenter: Rebecca Canam
The Nonacho Lake area located along the western margin of the Rae craton in the southeastern Northwest Territories consists of the ca. 1.91-1.82 Ga siliciclastic Nonacho Group interpreted to have been deposited
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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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High-Resolution Mapping of Glacial Landscapes in Central Mainland Nunavut Using ArcticDEM Data and Landsat 8 Imagery
Presenter: Isabelle McMartin
A new glacial geomorphology map covers 415 000 km2 in a core region of the Laurentide Ice Sheet in Nunavut.
