Igneous Rocks – Dynamic Planet

igneous rock  Igneous rocks are formed from the cooling and solidification of molten rock, also known as magma or lava Magma is found deep within the Earth's mantle, where Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth Great globs of molten rock rise toward the surface Some of the magma

Extrusive igneous rocks Extrusive igneous rocks are formed at the Earth's surface as a result of the partial melting of rocks within the mantle and crust The The texture of an igneous rock is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form,

• Igneous rocks form the framework for the earth's crust Page 2 2 General Characteristics of Magma • Igneous rocks form as molten rock cools and solidifies  Igneous rocks collected at the surface of the earth provide some of the best evidence for the workings of the earth beneath the surface, for the chemistry and