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Where one part of a plate continues almost horizontally while an adjacent section is driven down into the mantle, wouldn't that cause a violent fracture of the plate, and if not, why not? In case of the Nazca plate probably not because that is still warm and partly ductile (see the linked work in the other thread). Also, these cracks and deformations ...


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I think we can confidently enough answer "no". From this report (p. 23): Kilauea eruptions occur either at its summit or within two well-defined swaths (called rift zones) that radiate from the summit. In the same report, you can see those rift zones on the map page 3, or on the sketch of the plumbing system page 24. Most lava flows are emplaced along ...


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