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The next biggest supereruption formed the Yellowstone Caldera (640,000 years ago) and produced the Lava Creek Tuff. The Henry's Fork Caldera (1.2 million years ago) produced the smaller Mesa Falls Tuff, but is the only caldera from the Snake River Plain–Yellowstone hotspot that is plainly visible today. [15]
The caldera — a 50-mile-wide volcanic crater — is the remnant of a pair of massive volcanic eruptions thrown up by the Yellowstone hotspot as it wandered east to its current location. At its ...
The hotspot's most recent caldera-forming supereruption, known as the Lava Creek Eruption, took place 640,000 years ago and created the Lava Creek Tuff, and the most recent Yellowstone Caldera. The Yellowstone hotspot is one of a few volcanic hotspots underlying the North American tectonic plate; another example is the Anahim hotspot.
Yellowstone is the hotbed for the geologic hazard worldwide and explosions occur as many as a couple times a year, Michael Poland, the scientist-in-charge at the observatory, told USA TODAY. What ...
Denise Chow. November 1, 2023 at 11:47 AM. Two long-dormant “supervolcanoes” on two separate continents appear to be stirring to life. Well, maybe. In recent months, more than a thousand minor ...
The Yellowstone Volcano Observatory (YVO) is a volcano observatory that primarily monitors the Yellowstone Caldera in Yellowstone National Park in the United States. The observatory's jurisdiction also includes volcanic centers in the states of Colorado, Utah, Arizona, and New Mexico. As with other U.S. volcano observatories, it is funded ...
7. Extent of the Mesa Falls ash bed. The Mesa Falls Tuff is a tuff formation produced by the Mesa Falls eruption that formed the Henry's Fork Caldera that is located in Idaho west of Yellowstone National Park. [1] It is the second most recent caldera forming eruption from the Yellowstone hotspot and ejected of 280 km 3 (67 cu mi) of material.
July 23, 2024 at 2:43 PM. A violent hydrothermal explosion at Yellowstone National Park sent visitors fleeing Tuesday as mud and debris erupted from a geyser just north of Old Faithful, according ...