| Slag Hill | |
|---|---|
 An image ofRing Mountain (background) and Slag Hill (foreground) | |
| Highest point | |
| Coordinates | 50°11′00.23″N123°18′00.25″W / 50.1833972°N 123.3000694°W /50.1833972; -123.3000694 |
| Geography | |
  Slag Hill Location in British Columbia | |
| Location | British Columbia,Canada |
| Parent range | Pacific Ranges |
| Geology | |
| Mountain type | Subglacial volcano |
| Volcanicarc/belt | Canadian Cascade ArcGaribaldi Volcanic Belt |
| Last eruption | Holocene |
Slag Hill is asubglacial volcano associated with theMount Cayley volcanic field inBritish Columbia,Canada. It consists of glassy,augite-phyricbasaltic andesite in steep-sided, glassy, finely jointed domes and one small, flat-toppedbluff. The finely jointed domes are similar to those ofEmber Ridge. There are quench features at Slag Hill, which is suggesting that the volcanic activity wassubglacial. Slag Hill was formed throughout thePleistocene 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 thelast glacial period.[1]
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