types+of+vocanoes

Shield vocanoes
 * mainly lava
 * Hawaii volcanoes
 * not steep
 * basalt

Stratovolacanoes

Strato volcanoes are usually about half-half lava and pyroclastic material, and the layering of these products gives them their other common name of composite volcanoes.Lava very viscous.Explode

Rhyolite calderas [|Rhyolite] [|caldera] complexes are the most explosive of Earth's volcanoes but often don't even look like volcanoes. They are usually so explosive when they erupt that they end up collapsing in on themselves rather than building any tall structure (George Walker has termed such structures "inverse volcanoes"). The collapsed depressions are large calderas, and they indicate that the [|magma] chambers associated with the eruptions are huge. In fact, layers of [|ash] (either ash falls or ash flows) often extend over thousands of square kilometers in all directions from these calderas