Pressure from a pool of magma has just cracked solid rock, creating a volcano-tectonic (VT ... fault and the Mid-Atlantic Ridge). VT events cycle as many as five times a second, particularly ...

which are heated and compressed underground.Igneous rocks are formed when molten rock from volcanic activity cools down either underground or on the surface.This slow but continuous cycle of rock ...

Hawaii’s Kilauea volcano ... latest eruptive cycle. This remarkable phenomenon drew locals and tourists to Hawaii Volcanoes National Park, where the sight of glowing molten rock against the ...