effusive eruption definition geography
An effusive eruption is a volcanic eruption characterized by the outpouring of lava onto the ground (as opposed to the violent fragmentation of magma by explosive eruptions).ffusive eruptions occur when hot, (1200 Â°C) low-viscosity magmas reach the surface of the Earth's crust. Dissolved gases escape easily as the magma erupts, forming lava that flows downhill quite quickly and easily.