What still lurks under Yellowstone Park?


What still lurks under Yellowstone Park? More liquid magma lurks beneath the Yellowstone supervolcano than scientists once thought. But don't panic: That amount of magma, researchers say, is still nowhere near enough to portend an eruption any time soon.


What is the biggest thing in Yellowstone National Park?

The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica.


Was there a 7.3 earthquake in Yellowstone?

The largest historic earthquake in the Rocky Mountains was a magnitude 7.3 earthquake at Hebgen Lake northwest of Yellowstone in 1959. It was caused by the extension--or stretching--of the Earth's crust. The earthquake displaced a 40-km-long fault (25 miles) that rose vertically up to 12 meters (40 feet).


What are the 3 super volcanoes in the US?

Three of the seven supervolcanoes in the world are in the U.S.:
  • California: Long Valley Caldera.
  • New Mexico: Valles Caldera.
  • Wyoming: Yellowstone.


Would Yellowstone cause an ice age?

No. A very large volcanic eruption would cause a severe cold period called a volcanic winter, but not an ice age. Volcanic eruptions cool the planet by creating a fine aerosol of sulfuric acid in the stratosphere. The highly reflective droplets prevent a portion of the sun's light from reaching and heating the surface.


What is the biggest threat in Yellowstone?

Yellowstone's greatest geological threat isn't a supervolcano. It's a magnitude-7 earthquake. YELLOWSTONE NATIONAL PARK, Wyo. – While concerns about a potential eruption of the supervolcano beneath this iconic park may garner the most alarming headlines, a more likely hazard in the coming decades is a large earthquake.


What is the sleeping monster that was discovered 400 miles below Yellowstone Park?

This giant is the “supervolcano” that lies beneath Yellowstone National Park, the wildlife and forest preserve positioned on a sprawling expanse that extends through the states of Wyoming, Idaho, and Montana.


How bad would it be if Yellowstone erupted?

If another large, caldera-forming eruption were to occur at Yellowstone, its effects would be worldwide. Such a giant eruption would have regional effects such as falling ash and short-term (years to decades) changes to global climate.


When was the last time Yellowstone erupted?

The most recent volcanic activity at Yellowstone consisted of rhyolitic lava flows that erupted approximately 70,000 years ago.


Have dinosaurs been found in Yellowstone?

A femur (thigh bone) of the early dinosaur Chindesaurus, discovered at Petrified Forest National Park. The Jurassic (201 to 145 Ma) record of dinosaurs in the NPS is largely confined to the Colorado Plateau and Yellowstone area.


What states would be affected if Yellowstone erupted?

Those parts of the surrounding states of Montana, Idaho, and Wyoming that are closest to Yellowstone would be affected by pyroclastic flows, while other places in the United States would be impacted by falling ash (the amount of ash would decrease with distance from the eruption site).


Could an earthquake cause Yellowstone to erupt?

Definitely no, says Poland. “It is very unusual for an earthquake to trigger volcanic activity. We know this, for one, because in 1959 there was a M7. 2 on the northwest border of Yellowstone and it did not result in a major eruption,” Poland said, referring to the Hebgen Lake earthquake on Aug.


How far would Yellowstone volcano reach?

The lava flows themselves would be contained within a relatively small radius within the park — say, 40 miles or so. In fact, only about one-third of the material would actually make it up into the atmosphere.