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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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Bedrock Mapping and Lithogeochemistry of Mafic Volcanic Rocks, Winter Lake Greenstone Belt, Slave Craton
Presenter: Dawson Stone
The Archean Winter Lake greenstone belt (WLB) is located in the western part of the Slave craton ~250 km north-northeast of Yellowknife, Northwest Territories.
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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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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
