Crater Lake | U.S. Geological Survey - USGS.gov
Crater Lake partly fills one of the most visually spectacular calderas of the world, an 8-by-10-km (5-by-6-mi) basin more than 1 km (0.6 mi) deep formed by collapse of the volcano known as …
Eruption History for Mount Mazama and Crater Lake Caldera
Oct 31, 2023 · These eruptions culminated 7,700 years ago in the largest explosive eruption in the Cascades during the past 1 million years, and one of the Earth’s largest eruptions in the …
Geology and History Summary for Mount Mazama and Crater Lake
Oct 23, 2023 · Crater Lake is the remnant of Mount Mazama, which erupted catastrophically 7,700 years ago to form the caldera. Wizard Island in lake and Mount Scott is peak on right …
Mount Mazama and Crater Lake: Growth and Destruction of a …
Before Crater Lake came into existence, a cluster of volcanoes dominated the landscape. This cluster, called Mount Mazama (for the Portland, Oregon, climbing club the Mazamas), was …
Future Eruptions Around Crater Lake | U.S. Geological Survey
Oct 23, 2023 · The long history of volcanism at Mount Mazama, the volcano that houses Crater Lake, suggests that this volcanic center will be active in the future. Future eruptions will likely …
Geology of Crater Lake National Park | U.S. Geological Survey
The Cascade Range, in which Mount Mazama and Crater Lake sits, is a perfect example of a fundamental concept in geology. It involves a common interaction between tectonic plates and …
Geology and History | U.S. Geological Survey - USGS.gov
The long history of volcanism at Mount Mazama, the volcano that houses Crater Lake, suggests that this volcanic center will be active in the future. Future eruptions will likely occur within the …
Volcanic Hazards for the Crater Lake Region - USGS.gov
Oct 31, 2023 · Summary of volcanic hazards for the Crater Lake region. Crater Lake is unique among other Cascade volcanoes.
Crater Lake National Park: Presently Tranquil - USGS Fact Sheet
Several post-caldera volcanic features are present at Crater Lake, although only Wizard Island breaks the lake surface. The youngest post-caldera volcano is a small rhyodacite dome in …
Post-Caldera Volcanism and Crater Lake | U.S. Geological Survey
Oct 29, 2023 · The last known eruption at Crater Lake occurred when a small lava dome erupted underwater on the east flank of the base of Wizard Island about 4,800 years ago. Since that …