There are many different kinds of volcanoes, ranging from the Hawaiian type, which produces gentle, effusive eruptions that tourists can observe from mere steps away, to the andesitic variety ...

This micro-scale analysis helps us extract the magma secrets from the volcanic crystals, to reconstruct the inner anatomy of a volcano as if we were opening a doll's house. So next time you hike a ...

Hundreds of dikes can invade the cone and inner core of a volcano, often along zones of structural weakness. Left: An exposed dike, approximately five feet wide, at the caldera of Mauna Loa ...