Jump to content

Capricorn Assemblage

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Nyttend (talk | contribs) at 14:42, 10 March 2013 (Wikipedia:Categories for discussion/Log/2011 September 10). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The Capricorn Assemblage, also known as the Capricorn Formation, is a geological formation comprising the central portion of the Mount Meager massif in southwestern British Columbia, Canada. It is named after Capricorn Mountain, the third highest subsidiary peak of Meager. The assemblage was formed during a period of volcanic activity about or less than 90,000 years ago.[1]

Weathered rhyodacite is main volcanic rock of the Capricorn Assemblage. It forms the final 600 m (2,000 ft) of Capricorn Mountain and Mount Job. The rhyodacite is characterized by phenocrysts of plagioclase, quartz and biotite. Capricorn Assemblage rhyodacite underlies Plinth Assemblage rhyodacite on the south flank of Plinth Peak.[1]

See also

References

  1. ^ a b Read, Peter B. (1990). "Mount Meager Complex, Garibaldi Belt, Southwestern British Columbia". Articles. 17 (3). Geological Association of Canada: 168. ISSN 1911-4850. {{cite journal}}: |access-date= requires |url= (help)