A dark ash cloud with glowing bombs in the foreground. (Photo: Tom Pfeiffer)
More on VolcanoDiscovery:
: 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.
Small spherical balls of volcanic ash that form from a wet nucleus falling through a volcanic ash cloud.
Monthy earthquake reports
: For each month since July 2012, we publish a summary of quake activity world-wide: find the list of largest quake, a map showing all significant quakes as well as detailed statistics on seismic activity during this time.
A violent vulcanian-type explosion from Anak Krakatau in pictures step by step.