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The Yellowstone Caldera, sometimes referred to as the Yellowstone Supervolcano, is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States. The caldera and most of the park are located in the northwest corner of the state of Wyoming.
The Yellowstone Caldera — the cauldron-like basin at the summit of the volcano — is so colossal that it is often called a "supervolcano," which, according to the Natural History Museum in ...
Yellowstone Caldera, enormous crater in the western-central portion of Yellowstone National Park, northwestern Wyoming, that was formed by a cataclysmic volcanic eruption some 640,000 years ago. It measures approximately 30 by 45 miles (50 by 70 km), covering a large area of the park.
By Yellowstone Volcano Observatory November 4, 2024. Geologists from the Yellowstone Volcano Observatory are often asked to estimate how likely future eruptions are at Yellowstone, but it’s no walk in the national park. Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano ...
Yellowstone Caldera. A map of Yellowstone National Park, Wyoming, U.S.A., shows the outline of the caldera of the massive Yellowstone supervolcano. The Yellowstone supervolcano last erupted about 640,000 years ago. Illustration by NGM Maps.
The Yellowstone caldera was created by a massive volcanic eruption approximately 631,000 years ago. Later lava flows filled in much of the caldera, now it is 30 x 45 miles. Its rim can best be seen from the Washburn Hot Springs overlook, south of Dunraven Pass.
The thick West Yellowstone rhyolite lava flow erupted about 110,000 years ago, and the Nez Perce Creek flow erupted 160,000 years ago. Yellowstone's volcanism is the most recent in a 17 million-year history of volcanic activity that progressed from southwest to northeast along the Snake River Plain.
Two of the eruptions are considered some of the world's largest volcanic events. Yellowstone's youngest eruptions have been lava flows that remain confined to the caldera of present-day Yellowstone National Park. The 77,000 year-old Pitchstone Plateau flow is the volcano's most recent lava.
The region’s most recent caldera-forming eruption 640,000 years ago created the 35-mile-wide, 50-mile-long (55 by 80 km) Yellowstone Caldera. Pyroclastic flows from this eruption left thick volcanic deposits known as the Lava Creek Tuff, which can be seen in the south-facing cliffs east of Madison, where they form the north wall of the caldera.
A caldera is that volcanic depression that occurs when a magma reserve is emptied, the “caved in,” typically round in shape, section. The Yellowstone caldera is 35 miles wide and 50 miles long, although a recent study suggests the caldera is larger than previously thought.