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News Link • Geography

Eruption at Nishino-shima in the Pacific Produces a New Island

• Wired.com
This eruption started as a submarine one that was large and sustained enough to produce a new island in the North Atlantic. These sorts of events are fairly rare. Most of the time a new volcanic island emerges, it is quickly eroded by wave action. This is due to the nature of the material that constructs those early volcanic island, that being volcanic tephra. The island is more-or-less a pile of loose debris piling up until it reaches the surface. In order for the island to have much lasting power, it needs to emerge from the sea and erupt for long enough to start producing more resistant lava flows that will keep the waves from washing away the island. Why do I bring this up now?

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