High-precision timeline helps clarify an ancient magma surge in the North Cascades

November 6, 2026 · 7:40 pm 1 sources

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• High-precision timeline helps clarify an ancient magma surge in the North Cascades
  Phys.org · November 6, 2026 19:40
  Where oceanic crust subducts beneath continental crust, belts of volcanoes known as continental arcs can form. Located around the world, these arcs may undergo episodic magma flare-ups—dramatic surges in the flow of magma into the continental crust at rates up to 20 times higher than normal.…