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Thread: Supervolcano.

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    ENT
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    Supervolcano.

    Supervolcano' forming near New Zealand

    13/02/2013


    MICHAEL S THORNE/University of Utah

    BENEATH THE CRUST: Earth’s surface superimposed on a depiction of what a new University of Utah study indicates is happening 2900 kilometres deep at the boundary between Earth’s warm, rocky mantle and its liquid outer core.

    A "supervolcano" forming deep below the Earth's crust north of New Zealand, will have the power to destroy the world, but scientists are urging people not to worry - it could be 100 million years away.

    University of Utah seismologist Michael Thorne has been studying seismic waves beating through the Earth's crust, and says the ingredients are there for a "cataclysmic" eruption.
    "What we may be detecting is the start of one of these large eruptive events that - if it ever happens - could cause very massive destruction on Earth."

    But Thorne cautioned people not to cancel their cruises just yet.
    "This is the type of mechanism that may generate massive plume eruptions, but on the timescale of 100 million to 200 million years from now."

    The study has found that deep beneath the Pacific Ocean, near Samoa, two or more continent-sized piles of rock were colliding as they moved at the bottom of Earth's thick mantle and atop the thicker core.

    Published this week in international science journal Earth and Planetary Science, the study has found a huge zone of partly-molten rock is forming which had the potential to end in two ways.
    It could end in a "hotspot plume supervolcano eruption", similar to one two million years ago in Wyoming, which covered North America in ash.

    Otherwise, the likely alternative was a "gargantuan flood basalt eruption", which created large areas of igneous rock, like the Pacific Northwest's Columbia River basalts 17 million to 15 million years ago.
    "These very large, massive eruptions may be tied to some extinction events."

    Thorne said high resolution seismic imaging showed an ongoing collision between the piles of rock was merging in a "spongy blob of partly molten rock" underneath the volcanically active hotspot.
    Seismic imaging uses earthquake waves to make images of Earth's interior similar to the way X-rays make CT scan pictures of the inside of the human body.

    The study has pieced together the largest set of data ever used to map the lower mantle in the Pacific region by using 4,221 seismograms from hundreds of seismometers around the world that detected 51 deep earthquakes originating more than 100 kilometres under the surface.

    'Supervolcano' Forming Near New Zealand Says Scientist... | Stuff.co.nz
    “Is it not written in your Law, ‘I said, you are gods’? John 10:34.

  2. #2
    Thailand Expat misskit's Avatar
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    Quote Originally Posted by ENT View Post
    But Thorne cautioned people not to cancel their cruises just yet.
    A cruise ship would be a pretty good place to experience the end of the world.

    I'd like to sign up now for The End of the World Cruise, if I'm still around for it in a gazillion years.

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    Quote Originally Posted by ENT View Post
    ".... if it ever happens - could cause very massive destruction on Earth."
    Really?

    Nothing gets past this guy.

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    The University of Utah

    the place where people predict anything that may or may not happen

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    I like the "if it ever happens" bit.

    So this could all just be complete nonsense.

    Seems a pretty safe job, predicting events 100 million years hence. Will the university dock his allowance (retrospectively) if the prediction proves wrong?

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    The super-volcano to really watch out for is under Yellowstone Park, the world's biggest "cauldera" or basin of volcanic matter. Apparently this is as big as the Park itself, and tends to blow out every 600,000 years or so, changing the world's weather and consequently, life on the planet.
    According to the experts, the next big one is overdue already.

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    Are we sure he didn't plagiarizer a golf course map?

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    Should give Hollywood something to make a movie about.

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    ENT
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    Quote Originally Posted by misskit View Post
    Quote Originally Posted by ENT View Post
    But Thorne cautioned people not to cancel their cruises just yet.
    A cruise ship would be a pretty good place to experience the end of the world.

    I'd like to sign up now for The End of the World Cruise, if I'm still around for it in a gazillion years.
    I reckon U iz onta da right thing, lady!

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    Quote Originally Posted by kmart View Post
    The super-volcano to really watch out for is under Yellowstone Park......According to the experts, the next big one is overdue already.
    I thought about this, too, when I read the article.

    The US is on borrowed time, as is much of the planet. Forget global warming, just buy that SUV and enjoy what time we have.

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    We had big tsunamis during our life times, big earthquakes, huge storms, and finally a space rock hit a city and was caught on video, albeit a small one. What's actually lacking for too many generations, is a large volcanoe. Not an extinction event, but one that changes the weather globally for some time. The last was Krakatoa in 1883. Historically, there were two of this size per century. When it happens, expect some chaos. Airplanes all over the world remain on the ground. Crop failures everywhere, huge price hikes for food. Doomsday for the stock markets. Economic recession topping everything we've seen.

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    Great! Bring it on!

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