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Thread: Abyssal flood eruption

  1. #1
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    Abyssal flood eruption

    If a flood eruption occurred at the bottom of the Challenger Deep, would there be any visible effects on the surface?
    SHARKS (crossed out) MONGEESE (sic) WITH FRICKIN' LASER BEAMS ATTACHED TO THEIR HEADS

  2. #2
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    Sea level rise. Changes in ocean chemistry, which would change the surface biology.

    Grant Hutchison

  3. #3
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    Couple things: Challenger Deep is not abyssal; it is the deepest part of the Marianas Trench, a subduction zone. Given that, flood eruptions are quite unlikely to occur there. That said, as a thought exercise, there might be visual indications. An active eruption of a flood basalt, particularly a big one, would probably pump out a lot of gases that might affect the hue of the surface. As well, the eruption would disturb - perhaps quite radically - the overlying ocean currents, which might have a similar effect on hue. I'm doubtful either would be apparent to someone on a boat, but perhaps it would show from space. If you're thinking large amounts of bubbles frothing up the surface, I don't think so.

  4. #4
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    But i want my bubbles! :-)
    SHARKS (crossed out) MONGEESE (sic) WITH FRICKIN' LASER BEAMS ATTACHED TO THEIR HEADS

  5. #5
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    I wonder how far we may be from such an event
    https://www.brgm.eu/news-media/earth...ng-is-emerging

  6. #6
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    If Challenger Deep is unlikely for a flood eruption, what would be likely? A rift zone like East Africa?
    SHARKS (crossed out) MONGEESE (sic) WITH FRICKIN' LASER BEAMS ATTACHED TO THEIR HEADS

  7. #7
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    Most large igneous provinces (flood basalts) were formed at hot spots where mantle plumes invaded the crust. Flood basalts can also occur at rifts.

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