1. Volcanism in Iceland Local, Global and Economic Effects

2. Why is Iceland Volcanically Active?

3. Built on Mid-atlantic Ridge (spreading zone) 20 million years ago, spreading can be observed on land

4. Built on Mid-atlantic Ridge (spreading zone) 20 million years ago, spreading can be observed on land Since 834 A.D. 18 of the 130 volcanoes have erupted, constituting 30% of global lava flow in the same time period

5. Built on Mid-atlantic Ridge (spreading zone) 20 million years ago, spreading can be observed on land Since 834 A.D. 18 of the 130 volcanoes have erupted, constituting 30% of global lava flow in the same time period Volcanists travel to Iceland to witness Geological effects

6. Local & Global Effects of Iceland’s Volcanoes

7. Laki Eruption, June 8, 1783 122 megatons of sulfur dioxide into the atmosphere

8. Laki Eruption, June 8, 1783 Acidic rain resulted in acidic soil, killing and preventing plants from growing

9. Laki Eruption, June 8, 1783 pH of the aerosol may have been less than 2.0

10. Energy From the Earth

11. Geothermal energy has been used since prehistoric times.

12. Geothermal energy comes from radioactive decay of minerals .

13. Geothermal energy is released through volcanoes, fumaroles, hot spring, and geysers

14. Uses of Geothermal Energy in Iceland

15. Iceland’s Volcanic Economy

16. Economy in Iceland Relies on Earth for Resources

17. Economy in Iceland Relies on Earth for Resources Geothermal Energy

18. Economy in Iceland Relies on Earth for Resources Oil & Natural Gas

19. Economy in Iceland Relies on Earth for Resources Municipal Pools

20. Volcanism in Iceland