Supervolcano causes dramatic ground swelling in Yellowstone National Park

By on Jan 27, 2011 in North America, Science, United States, World Comments

A supervolcano called Yellowstone Caldera has caused a dramatic ground swelling in the area of Yellowstone National Park, according to international sites.

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The supervolcano Yellowstone Caldera, considered as an active volcano, covers a 25 mile by 37 mile area of Wyoming. During its last big blast about 640,000 years ago, a large crater was formed in the area. After the big blast, the supervolcano averages 30 minor eruptions. The most recent eruption of the supervolcano was 70,000 years ago that produced the areas’ flat landscape.

Scientists noticed in 2004, that the Caldera‘s ground rises at the rate as high as 2.8 inches (7 centimeters) annually. The ground swelling rate slowed down during the 2007 to 2010 period to more or less a centimeter annually.

University of Utah’s Bob Smith, a Yellowstone‘s volcanism expert, noticed that the supervolcano shows an “extraordinary uplift, because it covers such a large area and the rates are so high.”

The whole Yellowstone National Park has an area of 3,468 square miles that include lakes, canyons, rivers and mountain ranges.

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