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The Global Volcanism Program has no activity reports for Blue Lake Crater.
The Global Volcanism Program has no Weekly Reports available for Blue Lake Crater.
The Global Volcanism Program has no Bulletin Reports available for Blue Lake Crater.
Blue Lake crater, one of the least known Holocene volcanoes of the Oregon Cascades, is a series of at least three overlapping explosion craters along a NE trend slightly east of the crest of the Cascade Range. Explosions through pre-existing bedrock about 1300 years ago deposited basaltic bombs and cinders and spread a tephra blanket to the east and SE during perhaps the youngest eruption in the Santiam and McKenzie Passes region. The eruption created an elongated, steep-walled crater with a low rim that rises about 50 m above adjacent topography. The crater is now filled by the 0.3 x 0.8 km wide Blue Lake, immediately west of the popular recreation area of glacial moraine dammed Suttle Lake. A chain of spatter cones 6 km to the SSW and about 4 km NE of Mount Washington, is aligned with Blue Lake crater and has ejecta that are petrographically similar to that from Blue Lake and may have been erupted at the same time.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|0680 ± 200 years||Unknown||Confirmed||Radiocarbon (corrected)|
The Global Volcanism Program has no synonyms or subfeatures listed for Blue Lake Crater.
|Blue Lake Crater, 0.3 x 0.8 km wide, was formed about 1300 years ago by volcanic explosions through pre-existing volcanic bedrock. A least three overlapping craters were formed, with ejecta forming a crater rim only 50 meters above the pre-eruption surface.
Photo by Lee Siebert, 1995 (Smithsonian Institution).
|Blue Lake Crater in the foreground is one of three overlapping explosion craters located east of Santiam Pass. The craters formed about 1300 years ago by explosions through older volcanic bedrock, and a chain of spatter cones about 6 km SSW of Blue Lake may have been active during the same eruption. Despite its proximity to a major cross-Cascades highway, Blue Lake Crater is one of the least-known Holocene volcanoes of the Cascades. The snow-capped pinnacle of Pleistocene Mount Washington is visible in the background.
Photo by Lee Siebert, 1999 (Smithsonian Institution).
Sherrod D R, Taylor E M, Ferns M L, Scott W E, Conrey R M, Smith G A, 2004. Geologic map of the Bend 30- x 60-minute quadrangle, central Oregon. U S Geol Surv Map , I-2683, 1:100,000 scale and 48 p text.
Taylor E M, 1965. Recent volcanism between Three Fingered Jack and North Sister Oregon Cascade Range. Ore Bin, 27: 121-148.
Taylor E M, 1981. Roadlog for central High Cascade geology, Bend, Sisters, McKenzie Pass, and Santiam Pass, Oregon. U S Geol Surv Circ, 838: 59-83.