Igneous rock

igneous rock  Igneous rocks form when magma, or melted rock from inside the Earth, cools and hardens They can form above ground when magma erupts from a volcano as lava  Characteristics of igneous rocks · They are generally hard rocks and water permeate with great difficulty along the joints · They are granular

Igneous rocks occur as fragmental and coherent units of varied form Disruption of liquid rock near and at the surface by the explosive expansion of dissolved Magma can solidify into igneous rock in several different ways, each way resulting in a different igneous texture Magma may stay within the

Igneous rocks The first rocks on Earth were igneous rocks Igneous rocks are formed by the cooling and hardening of molten material called magma The word Porous black volcanic rock isolated on white background · Igneous Rocks Basalt texture background Stock Photo · Granite plutonic rock, intrusive igneous rock