CGRG Bibliography of Canadian Geomorphology
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Author : Edwards, B.R.; Evenchick, C.A.; McNicoll, V.J.; Wetherell, K.; and Nogier, M.
Date : 2006.
Title : Overview of the volcanology of the Bell-Irving volcanic district, northwestern Bowser Basin, British Columbia: new examples of mafic alpine glaciovolcanism from the northern Cordilleran volcanic province.
Publication : Geological Survey of Canada, Current Research
Issue : 2006-A3.
Page(s) : 12 p.
Abstract
Fourteen previously undescribed volcanic occurrences were documented from the westcentral Bowser Basin, in northern British Columbia, and have been assigned to the Bell-Irving volcanic district. Thirteen of the areas were briefly surveyed during aerial reconnaissance, while the fourteenth was mapped and described during three days of fieldwork in August of 2004. All fourteen areas contained deposits of pillow lavas and/or volcaniclastic rocks and were interpreted as products of Pleistocene, alpine glaciovolcanic eruptions. Samples from Craven Lake volcanic centre are basanites. A sample from the Bell-Irving River volcanic centre was dated by 40Ar-39Ar to be 0.43 ± 0.15 Ma, consistent with the interpretation that the deposits formed via interaction with Pleistocene ice. The Bell-Irving volcanic district is considered to be part of the northern Cordilleran volcanic province.
Bibliography of Canadian Geomorphology