From about 53 to 43 million years ago, this area experienced significant andesitic volcanism exceeding 29,000 km 3 (7,000 cu mi) in total volume, forming the Absaroka Volcanic Supergroup. Prominent peaks such as Mount Washburn and Eagle Peak are eroded remnants of these earlier stratovolcanoes. [2] .

Jan 3, 2025 · 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.

Nov 7, 2023 · 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.

Aug 31, 2021 · 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 Yellowstone region is one of the most seismically active areas in the United States. It experiences an average of around 1,500 to 2,500 located earthquakes per year!

Therefore a supervolcano is a volcano that at one point in time erupted more than 1,000 cubic kilometers of deposits. Yellowstone, like many other supervolcanoes, has also had much smaller eruptions. The cartoon shows a comparison of eruption sizes, …

Aug 6, 2024 · Experts estimate that the Yellowstone Supervolcano is approximately 1,500 square miles in size, roughly equivalent to the size of the state of Rhode Island. It has been active for millions of years and has erupted three times in the distant past.

The largest of these eruptions was about 2.1 million years ago, when the supervolcano released some 2,450 cubic kilometres of material. If Yellowstone were to produce another super eruption, the surrounding states of Wyoming, Idaho and Montana would be directly impacted by massive pyroclastic flows.

Jul 1, 2017 · Yellowstone National Park. Yellowstone has experienced two VEI 8 super eruptions. Island Park Caldera (also known as the Huckleberry Ridge Tuff Caldera) formed 2.1 million years ago when a total volume of 590 cubic miles (2,450 cubic km) was erupted.

1. Size: The Yellowstone supervolcano is one of the largest active volcanic systems in the world. Its caldera, or volcanic crater, is about 34 by 45 miles (55 by 72 kilometers) in size. 2. Eruptions: It has had three major eruptions in the past 2.1 million years, with the most recent one occurring about 640,000 years ago.