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Signal Peak volcano

Updated: Nov 28, 2022 12:03 GMT -
shield volcano 1555 m / 5,102 ft
Washington State (Canada and USA (mainland)), 46.23°N / -121.14°W
Current status: (probably) extinct (0 out of 5)

Signal Peak is the eroded remnant of a small andesitic stratovolcano overlying the southern part of the basaltic shield of the Lincoln Plateau.
Together with still active Mount Adams volcano to the west and the older Simcoe volcanic field of cinder cones to the east, it is part of a larger volcanic province that has been active for perhaps as much as 5 million years in the area.

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Typical eruption style: ? effusive lava flows
Signal Peak volcano eruptions: ca. 1-0.5 million years ago

Latest nearby earthquakes

No recent earthquakes

Background

Source:
Geologic Map of the Mount Adams Quadrangle, Washington. Compiled by M.A.Korosec, Washington Division of Geology and Earth Resources Open File Report 87-5 (1987)
Available for download at: www.osti.gov/bridge/index.jsp


See also: Sentinel hub | Landsat 8 | NASA FIRMS

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