Comments Subscribe to Personal Liberty News Feed Subscribe to Personal Liberty
 

Possible ‘Super Volcano’ Trigger Described

CORVALLIS, Ore., Oct. 12 (UPI) — A catastrophic so-called super-eruption of a major volcanic system happens about every 100,000 years, and U.S. researchers say they’ve found a possible trigger.

Scientists have long considered what could set off such massively destructive events, and researchers from Oregon State University say they think it’s a combination of temperature influence and the geometrical configuration of the magma chamber deep beneath the volcano system.

The creation of a malleable ring of rock around the magma chamber allows the pressure to build over tens of thousands of years, creating extensive uplifting in the roof above the magma chamber until geologic faults above the chamber cause it to collapse and trigger a massive eruption.

“You can compare it to cracks forming on the top of baking bread as it expands,” OSU researcher Patricia Gregg said in a university release Wednesday. “As the magma chamber pressurizes at depth, cracks form at the surface to accommodate the doming and expansion. Eventually, the cracks grow in size and propagate downward toward the magma chamber.

“In the case of very large volcanoes, when the cracks penetrate deep enough, they can rupture the magma chamber wall and trigger roof collapse and eruption,” she said.

The eruption of super-volcanoes can trigger planetary climate change by inducing Ice Ages and other impacts.

“Short of a meteor impact, these super-eruptions are the worst environmental hazards our planet can face,” Gregg said. “Huge amounts of material are expelled, devastating the environment and creating a gas cloud that covers the globe for years.”

 

UPI - United Press International, Inc.

Since 1907, United Press International (UPI) has been a leading provider of critical information to media outlets, businesses, governments and researchers worldwide.

Facebook Conversations

Join the Discussion:
View Comments to “Possible ‘Super Volcano’ Trigger Described”

Comment Policy: We encourage an open discussion with a wide range of viewpoints, even extreme ones, but we will not tolerate racism, profanity or slanderous comments toward the author(s) or comment participants. Make your case passionately, but civilly. Please don't stoop to name calling. We use filters for spam protection. If your comment does not appear, it is likely because it violates the above policy or contains links or language typical of spam. We reserve the right to remove comments at our discretion.

Is there news related to personal liberty happening in your area? Contact us at newstips@personalliberty.com

Bottom
close[X]

Sign Up For Personal Liberty Digest™!

PL Badge

Welcome to PersonalLiberty.com,
America's #1 Source for Libertarian News!

To join our group of freedom-loving individuals and to get alerts as well as late-breaking conservative news from Personal Liberty Digest™...

Privacy PolicyYou can opt out at any time. We protect your information like a mother hen. We will not sell or rent your email address to anyone for any reason.