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Crater Lake Oregon
- Location- National Park Oregon
- Elevation- 6,178' (1,883 m)
- Type of Volcano- Stratovolcano
- Cause of volcano in terms of Plate Tectonics- Mount Mazama was formed as a succession of overlapping cones and shields during a period of relatively continuous volcanic activity that lasted nearly half a million years, from about 420 to 40 ka.
- Current Status- There is currently a lake around the volcano and has been dormant for about 5,000 or 6,000 years.
- Historic eruptions- Mount Mazama had an enormous eruption about 7,700 years ago. This major eruption caused the landscape to change tremendously.
- Most recent eruptions- Mount Mazama
- Hazards posed by the volcano- Ash devastated the surrounding area, including all of the river valleys that drained Mount Mazama to as far as 64 km (40 mi) away, and a blanket of pumice and ash fell to the northeast of the volcano at least as far as central Canada. Erosion removed much of this material, feeding rivers that carried it far from its source, ultimately into the Pacific Ocean.
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