super volcano

Huge Magma Reservoir Under Yellowstone

May 19, 2015
Hsin Hua Huang, University of Utah

Scientists say a mammoth magma reservoir lies under Yellowstone. It’s four times the size of the magma pool that fuels the super volcano. They say it holds enough hot rock to fill the Grand Canyon 11 times… but you shouldn’t worry.

Dr. Robert Smith is considered the world’s foremost expert on the Yellowstone super volcano system. His publication last year drew attention worldwide, when it declared the magma body under the park was two and a half times larger than previously thought. 

Yellowstone National Park/Creative Commons

Researchers with the University of Utah have discovered a large magma reservoir underneath the Yellowstone National Park caldera. In a report released Thursday, they say the new area lies 12 miles underground, below a shallower well-known magma chamber.

Researcher Robert Smith is a co-author of the study and says his team used a geologic CT scan to discover the reservoir that’s filled with a mass of hot porous rock, rather than the typical magma. He says the new finding solves a puzzle of the Yellowstone volcano system.

National Park Service

Millions of people visit Yellowstone each year to see its geysers, fumaroles, hot springs, and mud pots. It's the largest concentration of thermal features in the world. The park sits on top of the world’s largest active volcano. Called the Super Volcano. Its most recent eruption was more than 600,000 years ago. All that remains is the top, or caldera.

When you come into the Park they’ll give you a map and it has an overlay of the caldera. It’s huge.

Yellowstone Denies Super Volcano Rumors

Apr 4, 2014

A video of bison running down a road in Yellowstone sparked viral internet rumors this week that the park's super volcano is about to explode. The rumors gained so much traction that Yellowstone officials felt the need to respond. Spokesman Al Nash says all is well, and that the animals were simply migrating.