United States · Volcanic field
Sand Mountain Field
- Type
- Volcanic field
- Elevation
- 1664m
- Last eruption
- -950
- Type
- Volcanic field
- Country
- United States
- Region
- North America / High Cascades Volcanic Arc
- Elevation
- 1664m
- Coordinates
- 44.380, -121.930
- Last eruption
- -950
- Tectonic setting
- Subduction zone / Continental crust (> 25 km)
- Landform
- Cluster
- Major rock type
- Basalt / Picro-basalt
Geological summary
The Sand Mountain volcanic field consists of 23 basaltic and basaltic andesite cinder cones along a N-S line immediately west of the Cascade crest NW of Mount Washington.
Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →
Eruption history
2 recordedGlossaryRecord summary
- Confirmed eruptions
- 2
- Uncertain eruptions
- 0
- Span of confirmed record
- 5050 BCE – 950 BCE
- Largest confirmed eruption
- VEI 4 (950 BCE)
- Confirmed eruptions since 1900
- 0
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
Detailed timeline
- 950 BCE (±200 yrs)VEI 4Geological estimate950 BCE – end unknown
- 5050 BCEVEI 2Geological estimate5050 BCE – end unknownJack Mountain
Nearby volcanoes
External links
- Not yet on Wikipedia (English). You can contribute on Wikidata.
- Smithsonian GVP source page
⚠ For reference only. Not for emergency response.