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(2020) Extensive Magmatic Heating of the Lithosphere beneath the Hawaiian Islands Inferred from Salt Lake Crater Mantle Xenoliths

Guest I, Ito G, Garcia MO & Hellebrand E


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05h: Room 2, Saturday 27th June 05:42 - 05:45

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Submitted by Keith Putirka on Thursday 25th June 23:30
Hi Imani - The ca. 200-300 deg. C heating is precisely in the range of what we would expect for the excess T of the Hawaiian plume. Is this by accident, or expected? I suppose heating depends upon how much mass is involved for hot and cool end-members, but I'm wondering if the plume can give up close to the entirety of its excess heat (for a case of near-equal masses, which means the plume should be quite cool moving laterally away from the plume core). Or is this a case where large amounts of melt invade a small space, perhaps over an extended period of time, making the excess T match a luckless coincidence? Thanks. -Keith

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