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  • The 1,000-plus alphabetical listings range from historical volcanoes and quakes (both famous and obscure) to entries on specific seismic phenomena (everything from parasitic cones to jokulhlaup) and general geological principles, including a few excellent in-depth discussions on topics like plate tectonics and seismic wave types.


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  • Icelandic term for glacial outburst floods (sudden outbursts of water released by a glacier). The water may come from glacier cavities, sub-glacial lakes, or glacier-dammed lakes in side valleys. Also jökulhlaup.

    November 14, 2008