The Pylon Assemblage is an accreted terrane of igneous rocks in southwestern British Columbia, Canada, located about 150 km (93 mi) north of Vancouver.
[1] On the southern flank of Pylon Peak, the oldest unit consists of andesitic lava flows.
Porphyritic plagioclase andesite of the youngest unit underlies much of the southern and western portions of Meager.
Devastator Peak, a volcanic plug at the southern end of the Meager massif, was the source for these lava flows between 1,000,000 and 500,000 years ago.
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