Caldera chronicles: Hydrothermal explosions hidden beneath Yellowstone Lake s serene waters | Montana Untamed billingsgazette.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from billingsgazette.com Daily Mail and Mail on Sunday newspapers.
| UPDATED: 16:42, Tue, Dec 29, 2020
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Yellowstone volcano in the western United States is perhaps best known for its supervolcanic activity. In the past 2.1 million years, the supervolcano had at least three major eruptions one of which was about 6,000 more powerful than the eruption of Mt St Helens in Washington State in 1980. But the volcanic caldera, which stretches some 34 by 45 miles across, is also known for another, much more frequent sign of activity - hydrothermal explosions.
Hydrothermal explosions hidden beneath Yellowstone Lake’s serene waters Release Date:
December 28, 2020
Although Yellowstone Lake itself may seem calm, the floor of the lake is littered with hydrothermal explosion craters. Detailed studies are beginning to reveal the details of these explosions, like the one that formed Elliott’s Crater about 8000 years ago.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week s contribution is from Lisa Morgan, emeritus research geologist with the U.S. Geological Survey.
Photograph of north and eastern rim of the 9400-year-old Turbid Lake explosion crater showing the primary explosion ejecta rim with a secondary explosion ejecta rim inside the lake-occupied explosion crater. Many, if not most, larger explosion craters have multiple explosion histories and are long-lived hydrothermal systems.