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Divergent plate boundaries in oceans Two ocean plates move apart from each other. Hot upwelling mantle material forms magmas that continuously produce new oceanic crust. An ocean widens.
Private tours on Etna volcano Discover Europe's largest active volcano on private, guided 1-day tours. Tours can be customized for different interests and fitness levels.
Colors of Iceland Discover Iceland's fascinating geology and volcanic activity on this relaxed photo and geo tour! Get to see the new volcanic eruption on the Reykjanes peninsula from close!