Global Volcanism Program | Image GVP-03508
Lava flows are produced when magma reaches the surface and is erupted non-explosively. Basaltic lava flows, such as this September 1979 flow from the East Rift Zone of Kilauea volcano, are Earth's most common volcanic product. Basaltic lava flows typically have initial temperatures of 1,000-1,250°C with a range of flow velocities.
Photo by Richard Moore, 1977 (U.S. Geological Survey).