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Indian Heaven

Volcanic field · United States · 1806m

The youngest eruption of the Indian Heaven volcanic field, midway between Mount St. Helens and Mount Adams, produced a large scoria cone and a voluminous lava flow about 9,000 years ago. The source of the flow is the cone to the right, with Mount Hood visible in the background. The Big Lava Bed flow, which forms the slope in the foreground, banked against higher slopes to the north and traveled 13 km S to within 8 km of the Columbia River.
The youngest eruption of the Indian Heaven volcanic field, midway between Mount St. Helens and Mount Adams, produced a large scoria cone and a voluminous lava flow about 9,000 years ago. The source of the flow is the cone to the right, with Mount Hood visible in the background. The Big Lava Bed flow, which forms the slope in the foreground, banked against higher slopes to the north and traveled 13 km S to within 8 km of the Columbia River. · Photo: Photo by Lee Siebert, 1995 (Smithsonian Institution). · Wikimedia Commons
Type
Volcanic field
Country
United States
Region
North America Volcanic Regions / High Cascades Volcanic Arc
Elevation
1806m
Coordinates
45.930, -121.820
Last eruption
-6250
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Cluster
Major rock type
Basalt / Picro-Basalt
Geological summary

The Pleistocene-to-Holocene Indian Heaven volcanic field, located midway between St. Helens and Adams, is an area of low overlapping shield volcanoes with flank vents primarily oriented N-S. Small shield volcanoes topped by cinder and spatter cones dominate the field, which also contains subglacial vents. The shield volcanoes extend from Sawtooth Mountain on the north to Red Mountain on the south; the high point of the field is Lemei Rock shield volcano. Basaltic-to-andesitic lava flows cover much of the field; individual lava flows, many with extensive lava tubes, traveled up to 46 km. The youngest eruption, about 8,200 years ago, produced the voluminous Big Lava Bed, a 0.9 km3 basaltic lava flow that traveled nearly 25 km S of its source from an unnamed cinder cone SE of Red Mountain, to within 8 km of the Columbia River.

From Wikipedia

Indian Heaven is a volcanic field in Skamania County in the state of Washington, in the United States. Midway between Mount St. Helens and Mount Adams, the field dates from the Pleistocene to the early Holocene epoch. It trends north to south and is dominated by six small shield volcanoes; these shields are topped by small spatter and cinder cones, and the field includes a number of subglacial volcanoes and tuyas. The northernmost peak in the field is Sawtooth Mountain and the southernmost is Red Mountain; its highest point is Lemei Rock at an elevation of 5,925 feet (1,806 m).

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Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
6250 BCE~6250 BCE · 1 eruptions · max VEI ?6250 BCE6250 BCE6249 BCE6249 BCE6249 BCE

Detailed timeline

  1. 6250 BCE (±100 yrs)VEI ?Geological estimate
    BCE 6250 – Ongoing
    Big Lava Bed

External links

⚠ For reference only. Not for emergency response.