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Divergent Plate Boundaries in the Oceans

Plates diverging in the oceans leads to seafloor spreading and on a continent leads to continental rifting.

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Geothermal Power in Iceland

Geothermal Power in Iceland

Credit: Gretar ?varsson
Source: http://en.wikipedia.org/wiki/File:NesjavellirPowerPlant_edit2.jpg
License: CC BY-NC 3.0

About 85% of power in Iceland is from renewable sources that originate on the island. Geothermal makes up about 65% of the total. What makes Iceland so great for geothermal?

Amazing But True!

  • Iceland lies on the northern Mid-Atlantic Ridge.
  • The North American and Eurasian Plates are pulling apart at a rate of 2 cm/year.
  • The Iceland Hotspot lies beneath the island.
  • Credit: USGS
    Source: http://en.wikipedia.org/wiki/File:Iceland_Mid-Atlantic_Ridge_Fig16.gif
    License: CC BY-NC 3.0

    Map of the Mid-Atlantic Ridge and the splitting of the North American and Eurasian plates [Figure2]

     

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With the link below, learn more about Iceland’s geothermal power. Then answer the following questions.

  1. What are the sources of magma on Iceland?
  2. What is a volcanic system on Iceland? What features does it contain?
  3. Where is the geothermal power on Iceland, in the volcanically active areas or elsewhere?
  4. Why do the geothermal areas have high temperatures?
  5. How does the water get heated up?

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