Slag Hill

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Slag Hill
Slag Hill and Ring Mountain.jpg
An image of Ring Mountain (background) and Slag Hill (foreground)
Highest point
Coordinates 50°11′00.23″N 123°18′00.25″W / 50.1833972°N 123.3000694°W / 50.1833972; -123.3000694Coordinates: 50°11′00.23″N 123°18′00.25″W / 50.1833972°N 123.3000694°W / 50.1833972; -123.3000694
Slag Hill is located in British Columbia
Slag Hill
Slag Hill
Location of Slag Hill in southwestern British Columbia, Canada
Location British Columbia, Canada
Parent range Pacific Ranges
Mountain type Subglacial volcano
Volcanic arc/belt Canadian Cascade Arc
Garibaldi Volcanic Belt
Last eruption Holocene

Slag Hill is a subglacial volcano associated with the Mount Cayley volcanic field in British Columbia, Canada. It consists of glassy, augite-phyric basaltic andesite in steep-sided, glassy, finely jointed domes and one small, flat-topped bluff. The finely jointed domes are similar to those of Ember Ridge. There are quench features at Slag Hill, which is suggesting that the volcanic activity was subglacial. Slag Hill was formed throughout the Pleistocene period, but its most recent volcanic activity produced a lava flow on its western lobe that shows no evidence of ice-contact volcanism.[1] This indicates the lava flow was erupted less than 10,000 years ago after the last glacial period.[1]


  1. ^ a b Catalogue of Canadian Volcanoes Retrieved on 2007-05-28

See also[edit]