Histogram showing the eruptive history of the Mount Meager massif. The eruptive period that created The Devastator Assemblage is shown as a rectangle between 1.4 and 1.6 Ma.
The Devastator Assemblage is a geological formation comprising a portion of the Mount Meager massif in southwestern British Columbia, Canada. It is named after Devastator Peak (also known as The Devastator), the lowest and southernmost subsidiary peak of Meager. The south and west flanks of Pylon Peak and Devastator Peak are made of The Devastator Assemblage rocks.[1]
This 500 m (1,600 ft) thick rock unit was formed during a period of volcanic activity between 1,900,000 and 500,000 years ago.[1][2][3] It consists of subvolcanic intrusions of a partly preserved volcanic vent and felsic volcanic rocks that were erupted from the vent. The eastern portion of The Devastator Assemblage comprises the partly preserved vent and felsic volcanic rocks while the western portion consists of crudely layered tephra.[1]
^ abcRead, Peter B. (1990). "Mount Meager Complex, Garibaldi Belt, Southwestern British Columbia". Articles. 17 (3). Geological Association of Canada: 167, 168. ISSN 1911-4850.
^Stelling, Pete; Tucker, David S. (2007). Floods, Faults, and Fire: Geological Field Trips in Washington State and Southwest British Columbia. Boulder, Colorado: Geological Society of America. pp. 14, 15. ISBN 978-0-8137-0009-0.
^Wood, Charles A.; Kienle, Jürgen (1990). Volcanoes of North America: United States and Canada. Cambridge, England: Cambridge University Press. p. 141. ISBN 0-521-43811-X.
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