2.0 mm or less) and grains are generally seriate in texture. Other textures, such as the presence of amphibole veins could be an indication of metasomatism at some point. Chemical analysis of mineral compositions reveals...
Basanite lavas near Craven Lake, British Columbia, host a spinel lherzolite xenolith containing cross-cutting veins with pargasitic amphibole (plus minor apatite). The occurrence of vein amphibole in spinel lherzolite is...
The Canadian Cordillera hosts numerous Pleistocene and Holocene volcanoes and volcanic deposits, including a number of volcanoes that have erupted within the last several hundred years. The nature and composition of volcanic...