Yellowstone Has Bulged as Magma Pocket Swells

Yellowstone National Park’s supervolcano just took a deep “breath,” causing miles of ground to rise dramatically, scientists report.

The simmering volcano has produced major eruptions—each a thousand times more powerful than Mount St. Helens’s 1980 eruption—three times in the past 2.1 million years. Yellowstone’s caldera, which covers a 25- by 37-mile (40- by 60-kilometer) swath of Wyoming, is an ancient crater formed after the last big blast, some 640,000 years ago.

(See “When Yellowstone Explodes” in National Geographic magazine.)

Since then, about 30 smaller eruptions—including one as recent as 70,000 years ago—have filled the caldera with lava and ash, producing the relatively flat landscape we see today.

But beginning in 2004, scientists saw the ground above the caldera rise upward at rates as high as 2.8 inches (7 centimeters) a year. (Related: “Yellowstone Is Rising on Swollen ‘Supervolcano.’”)

The rate slowed between 2007 and 2010 to a centimeter a year or less. Still, since the start of the swelling, ground levels over the volcano have been raised by as much as 10 inches (25 centimeters) in places.

“It’s an extraordinary uplift, because it covers such a large area and the rates are so high,” said the University of Utah’s Bob Smith, a longtime expert in Yellowstone’s volcanism.

  • Share/Bookmark

Leave a Reply

You must be logged in to post a comment.

Radio Archives

Fundraising with GoGetFunding
Fundraising with GoGetFunding

Give Your Support

The Global Reality represents a tireless effort to search, gather, and present information that even some alternative media channels refuse to discuss, let alone the mainstream. This effort is provided with no advertisements, no selling of products or services that are irrelevant and useless. There is only one sponsor: YOU!

Support the information that's in your right to know, that "they" dare not want you to know.

Notice: We can now take manual credit card entries for DVD's or donations. Those who do not want to use Paypal can now send your credit card number, expiration date, 3 digit security code and zip code to globalrealityshow@gmail.com along with the amount of purchase and we can process your order into our Paypal account without you having to use Paypal at all.

One-Time Donation

Donation Subscription

Monthly Recurring Donations
Your Own Amount: $

Join Us on FedBook