User:Ilovegeologyandastronomystarrock

Volcanoes have a very powerful effect on the land. When Magma seeps up from the asthenosphere, or or lower Mantle, and reaches the lithosphere, or the crust and upper Mantle, it seeps up through cracks in the crust, and reaches the surface it starts erupting as a volcano. Eventually, depending on the type of eruptions by the volcano, the volcano will build up Lava bombs, lava, basalt, rhyolite, ash, and pumice to make a volcanic mountain. This can happen on land or undersea. Volcanoes are an awesome natural force!