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Heart Peaks of British Columbia, Canada is a shield volcano belonging to the Northern Cordilleran Volcanic Province. The volcanic centre reaches a maximum elevation of 2012 m, consisting of a flat-topped plateau of mafic lava flows covering an area of ~275 km2, with acid volcanics located on the western side. The extrusives of the plateau belong to two groups: the sub-alkaline Hearts Peaks Formation consisting of rhyolite and trachyte, and the alkaline Level Mountain Group consisting of alkali olivine basalts, hawaiites, and potassic trachybasalts. Some alkali basalts are nepheline-normative, and some contain xenoliths of alkali-diorite. Geochemical data, including major and trace element analysis, Sr and O isotope data and petrographic details can be found in Casey (1980).
CASEY, J.J., 1980. Geology of the Heart Peaks Volcanic Centre, Northwestern British Columbia. Masters thesis, University of Alberta. EDWARDS, B.R. & RUSSELL, J.K., 2000. Distribution, nature, and origin of Neogene-Quarternary magmatism in the north Cordilleran volcanic province, Canada. Bulletin of the Geological Society of America 112 (8) 1280-1295