The supervolcano forming under the Pacific that could wipe out life...

Feb 12, 2013 Full story: Mail on Sunday

The University of Utah team say two or more continent-sized 'piles' of rock are colliding as they move at the bottom of Earth's thick mantle 1,800 miles beneath the ocean.

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“Geologist [I'm Climate Change]”

Since: Mar 07

formerly Nuneaton

#1 Feb 13, 2013
Interesting.

I am also aware of the Fiji plateau plume whic is deforming and uplifting the descending pacific plate @ the Tonga arc under Fiji, which is also uplifting and spreading the Fiji plateau causing lots of interesting rifts.

The same plume also appears to be responsible for the backarc basin spreading @ Tonga.

The base crustal zone appears to have not yet reached Samoa at the central point despite the florida sized blob apparently being there; if the description is right.
They may actually instead be imaging the base of the samoa mantle plume.

Would be interesting to see.

have a nice day: Ag

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