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United States · Stratovolcano

Mount Hood

Hood

Type
Stratovolcano
Elevation
3426m
Last eruption
1866
Mount Hood
Photo: Oregon's Mt. Hood Territory. · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
North America / High Cascades Volcanic Arc
Elevation
3426m
Coordinates
45.374, -121.695
Last eruption
1866
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic andesite

Geological summary

Mount Hood, Oregon's highest peak, forms a prominent backdrop to the city of Portland. The eroded summit area consists of several andesitic or dacitic lava domes.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

From Wikipedia

Mount Hood is an active stratovolcano in the Cascade Range and is a member of the Cascade Volcanic Arc. It was formed by a subduction zone on the Pacific Coast and rests in the Pacific Northwest region of the United States. It is located about 50 miles (80 km) east-east-southeast of Portland, on the border between Clackamas and Hood River counties, and forms part of the Mount Hood National Forest. With a summit elevation of 11,249 feet (3,429 m), it is the highest mountain in the U.S. state of Oregon and is the fourth highest in the Cascade Range.

Wikipedia · CC BY-SA · Read full article →

Eruption history

8 recordedGlossary

Record summary

Confirmed eruptions
5
Uncertain eruptions
3
Span of confirmed record
4940 BCE (±150 yrs) – 1866
Largest confirmed eruption
VEI 2 (1865, the most recent of 3)
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
4940 BCE~4713 BCE · 1 eruptions · max VEI 2280~507 · 1 eruptions · max VEI ?1642~1869 · 6 eruptions · max VEI 24940 BCE3351 BCE1535 BCE531642

Detailed timeline

  1. 1869VEI ?Method not stated
    1869-07-02 – end unknown
  2. 1865VEI 2Observed
    1865-09-21 – 1866-01-16
  3. 1859VEI 2Observed
    1859-08-15 – 1859-08-17
  4. 1854VEI ?Method not stated
    1854-08-16 – end unknown
  5. 1853VEI ?Method not stated
    1853-07-02 – end unknown
  6. 1781VEI ?Geological estimate
    1781-10-15 – 1801-07-02
    Crater Rock
  7. 480 (±37 yrs)VEI ?Geological estimate
    480 – end unknown
    Crater Rock
  8. 4940 BCE (±150 yrs)VEI 2Geological estimate
    4940 BCE – end unknown
    Lower NE flank (SSW of Parkdale)

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.