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hotspots and magnetic reversals

hotspots and magnetic reversals. Pacific Ring of Fire. Volcanism is mostly focused at plate margins. Volcanoes are formed by:. - Subduction - Rifting - Hotspots. Pacific Ring of Fire. Hotspot volcanoes. What are Hotspot Volcanoes?.

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hotspots and magnetic reversals

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  1. hotspots and magnetic reversals

  2. Pacific Ring of Fire Volcanism is mostly focused at plate margins

  3. Volcanoes are formed by: - Subduction - Rifting - Hotspots

  4. Pacific Ring of Fire Hotspot volcanoes

  5. What are Hotspot Volcanoes? • Hot mantle plumes breaching the surface in the middle of a tectonic plate The Hawaiian island chain are examples of hotspot volcanoes. Photo: Tom Pfeiffer / www.volcanodiscovery.com

  6. The tectonic plate moves over a fixed hotspot forming a chain of volcanoes. The volcanoes get younger from one end to the other.

  7. Magnetic Reversals • The changing in direction of the Earth’s magnetic poles. • When the Earth’s poles do change direction, the rocks on the seafloor become magnetically charged in the opposite direction

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