"Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings. Cinder cones are numerous in western North America as well as throughout other volcanic terrains of the world."
|Kilauea East Rift Geothermal Area||Hawaii Geothermal Region||Hot Spot||Quaternary||Tholeiitic Basalt||47 MW|
|Long Valley Caldera Geothermal Area||Walker-Lane Transition Zone||Extensional Tectonics||Quaternary||Bishop Tuff, Metamorphic Basement||38 MW|