Muskox intrusion

It was formed during a large magmatic event during the Proterozoic by hotspot or mantle plume volcanism that emplaced the widespread Coppermine River Group flood basalts.

Rock types include picrite, peridotite, dunite, pyroxenite, gabbro and granophyre.

A feeder dike of olivine gabbro is exposed "below" the now tilted sequence.

Further stratigraphic and structural evidence provides further support that the Muskox, the MacKenzie dikes and the Coppermine flows are of the same magmatic event that formed the Mackenzie Large Igneous Province and the Muskox is interpreted as occupying the magma chamber which fed the volcanism.

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