GENERAL GEOLOGY

Detailed explanation-1: -Answer: A metamorphic rock changes into an igneous rock by what two processes? If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools, it forms an igneous rock.

Detailed explanation-2: -Igneous and sedimentary rocks can only be produced by igneous and sedimentary processes. There are two main mechanisms of metamorphism, heat and pressure.

Detailed explanation-3: -Igneous rocks (derived from the Latin word for fire) are formed when molten hot material cools and solidifies. Igneous rocks can also be made a couple of different ways.

Detailed explanation-4: -Magma that cools quickly forms one kind of igneous rock, and magma that cools slowly forms another kind. When magma rises from deep within the earth and explodes out of a volcano, it is called lava, and it cools quickly on the surface. Rock formed in this way is called extrusive igneous rock.

Detailed explanation-5: -Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there.