West Crater
| West Crater | |
|---|---|
 | |
| Elevation | 4,360 ft (1,330 m) |
| Location | |
| Location | Skamania County, Washington, U.S. |
| Range | Cascade Range |
| Coordinates | 45°52′26″N 122°05′01″W / 45.8740030°N 122.0836985°WCoordinates: 45°52′26″N 122°05′01″W / 45.8740030°N 122.0836985°W[1] |
| Topo map | Lookout Mountain |
| Geology | |
| Type | lava dome |
| Age of rock | Holocene |
| Volcanic arc | Cascade Volcanic Arc |
| Last eruption | 5750 BCE (?) |
West Crater is a small andesitic lava dome with associated lava flows in southern Washington, USA.[2]
West Crater is a little-known Quaternary volcanic field in the southern Cascades of Washington between Mount St. Helens and Mount Hood. West Crater itself, seen here from the NE, is an andesitic dome with two small lava flows, one of which forms the bare area at the right center. The 290-m-high dome was formed about 8060 years ago on the floor of a cirque carved into older Tertiary volcanic rocks. The West Crater volcanic field consists of a series of small shield volcanoes and cinder cones along a NW-SE zone.
See also
- List of volcanoes in the United States of America
- Cascade Volcanoes
References
- ↑ "West Crater". Geographic Names Information System. United States Geological Survey. Retrieved 2009-05-27.
- ↑ "West Crater". Global Volcanism Program. Smithsonian Institution. Retrieved 2009-05-27.