GENERAL GEOLOGY

Detailed explanation-1: -Igneous rocks can also be made a couple of different ways. When they are formed inside of the earth, they are called intrusive, or plutonic, igneous rocks. If they are formed outside or on top of Earth’s crust, they are called extrusive, or volcanic, igneous rocks.

Detailed explanation-2: -Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock. Igneous rock forms when magma cools and makes crystals.

Detailed explanation-3: -Igneous rock may also be transformed into metamorphic rock, and metamorphic rock exposed at Earth’s surface may be eroded to produce sediment. Furthermore, metamorphic and sedimentary rocks thrust deep underground through subduction may eventually melt to form magma and cool into igneous rock once again.

Detailed explanation-4: -Can an igneous rock become another igneous rock? If so, how? Yes, by melting again and then solidification.