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Glossary of geologic terms A growing list of often illustrated explanations and definitions of geological terms and keywords, with focus on volcanology and seismology.
Intraplate volcanism A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category.
Kelut volcano photos A new lava dome grew inside the crater lake during the effusive eruption in late 2007, replacing most of the lake. Watch the birth of a new mountain!
Worst earthquakes of the 20th century More than 1.5 million people lost their lives because of earthquakes in the 20th century. Check the list of damaging and deadly quakes from 1900-1999!