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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Adams
Mount Adams in the Cascade Range is seen here in 1981 from High Knob to the NW. Its base is at a lower elevation than its neighbor Mount Rainier and it has a larger volume. Numerous flank vents surround the volcano and a series of lava flows have erupted on the N, NW, S and E flanks. Photo by Lee Siebert, 1981 (Smithsonian Institution).
Volcano Number:
321040
Volcano Name:
Adams
Country:
United States
Volcano Type:
Stratovolcano
Last Eruption:
950 CE
Elevation:
3742m
Tectonic Setting:
Subduction zone / Continental crust (> 25 km)
Pop. within 10km:
70
Pop. within 30km:
4019
Pop. within 100km:
393303
Latitude:
46.206
Longitude:
-121.49
Details
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The andesitic-dacitic Mount Adams stratovolcano is second in volume only to Mount Shasta in the Cascade Range. The volcanic complex is elongated along a NNW-SSE line, and includes more than 60 flank vents over 200 km2. Volcanism began about 940 ka, with three main cone-building stages occurring at about 500, 450, and 30 ka. It was active throughout the Holocene, producing two dozen minor explosive eruptions from summit and flank vents. Six Holocene lava flows are located on the flanks between 2,100 and 2,600 m elevation. The most voluminous Holocene lava flows, some of which traveled 10 km or more, were emplaced between about 7,000 and 4,000 years ago. The latest eruption about 1,000 years ago produced a minor tephra layer and possibly a small lava flow down the E flank.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.
Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.
Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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