factures WEBVTT

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Today's seamount - Liszt seamount, is pretty unique in that it sits right on top of these

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structural features.

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These structural features are called fracture
zones.

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And they have been there for ninety million
years or so.

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You can think of them as the big cracks in
the crust.

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So one of the things we are curious about,
is whether or not the lavas that are coming

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up in these seamounts are exploiting these
fractures to get to the surface because it's

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an easier path for them to ascend.

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Well the geology has gotten a lot more interesting
as we have gone upslope.

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John, what's this long tube?

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That's quite impressive.

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That's like a really big pillar of lava.

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That's how this lava mobilizes downslope.