Continental arcs are generated when an oceanic plate dives (i.e. subducts) beneath continental crust, causing melting in the mantle and the formation of volcanoes on the overriding continent. In ...

The diagram below shows the structure of the earth ... Some of these undersea volcanoes become so large that they erupt out of the sea to form volcanic islands, e.g. Surtsey and the Westman ...

One such project studies active volcanoes in Chile that were once covered by a thick ... through the investigation of alkaline lake strata of the lacustrine Green River formation. Researchers chose ...