A cross posting from my teaching blog.
Iceland has been made by volcanoes.
It developed along the point where a 'hot spot' or mantle plume coincided with a plate boundary.
Successive eruptions have laid layers of lava as flood basalts, spiked through with small effusive moments and the occasional larger eruption: Katla, Hekla, Laki etc.
Image: Natthagi Lavas - some people walking on lava just a few years old.
Do the benefits of this activity outweigh the potential risks and problems?
I asked my students to consider this question.
Do the Benefits of Volcanic Activity in Iceland outweigh the benefits? by Alan Parkinson
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