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A petrological and geochemical study of the volcanic rocks of the Crowsnest Formation, southwestern Alberta, and of the Howell Creek suite, British Columbia

✍ Scribed by Bowerman, Melissa; Christianson, Amy; Creaser, Robert A; Luth, Robert W


Book ID
120486200
Publisher
NRC Research Press
Year
2006
Tongue
English
Weight
771 KB
Volume
43
Category
Article
ISSN
0008-4077

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The mid-Cretaceous Spences Bridge Group (SBG) comprises a series of basaltic to rhyolitic lavas and related volcaniclastic rocks (Pimainus Formation) overlain by a succession of mainly amygdaloidal andesites (Spius Formation) related to the closure of the Methow-Tyaughton basin and accretion of the