Blue Lake Crater

sopka – Maar, United States, North America Volcanic Regions

Kde

United States, North America Volcanic Regions

Typ (GVP)

Maar

Nadmořská výška

1 136 m

Tektonické prostředí

Subduction zone / Continental crust (> 25 km)

Poslední známá erupce

680

Poloha

44,413°, -121,769°

Blue Lake Crater is a series of at least three overlapping explosion craters along a NE trend slightly east of the crest of the Cascade Range in the state of Oregon. Explosions through pre-existing bedrock about 1,300 years ago deposited basaltic bombs and cinders, and spread tephra to the E 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 300 x 800 m Blue Lake, immediately west of the 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 and may have been erupted at the same time.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.