The '''Spences Bridge Group''' is a 100-million-year-old volcanic group of the southern Intermontane Belt in British Columbia, Canada. It consists of two stratigraphic units called the Pimainus Formation and the Spius Formation.<ref name="SI">{{Cite web |url=http://www.sfu.ca/~dthorkel/linked/thork%20and%20smith%20sbg%201989.pdf |title=Arc and intraplate volcanism in the Spences Bridge Group: Implications for Cretaceous tectonics in the Canadian Cordillera |access-date=2023-05-26 |archive-date=2019-12-22 |archive-url=https://web.archive.org/web/20191222021141/http://www.sfu.ca/~dthorkel/linked/thork%20and%20smith%20sbg%201989.pdf |url-status=live }}</ref> The Spius Formation represents a shield volcano whereas the underlying Pimainus Formation is interpreted to be a set of stratovolcanoes.<ref name="SI"/>
==See also== *Volcanism of Canada *Volcanism of Western Canada
==References== {{reflist}}
Category:Extinct volcanoes of British Columbia Category:Cretaceous volcanoes Category:Volcanic groups Category:Thompson Country Category:Geologic groups of British Columbia Category:Cretaceous British Columbia Category:Shield volcanoes of Canada Category:Stratovolcanoes of Canada
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