Answer:
Igneous and metamorphic rocks are two of the three major types of rocks found on Earth, with the third being sedimentary rocks. Igneous rocks are formed from the solidification of molten magma or lava, while metamorphic rocks are formed from the transformation of existing rocks due to high temperature and pressure.
The formation of igneous rocks begins when magma or lava cools and solidifies. Magma is molten rock that is located beneath the Earth's surface, while lava is magma that has erupted onto the surface. When magma or lava cools and solidifies, it forms igneous rocks. There are two types of igneous rocks: intrusive and extrusive. Intrusive igneous rocks form when magma cools and solidifies slowly beneath the Earth's surface, while extrusive igneous rocks form when lava cools and solidifies quickly on the Earth's surface. Examples of igneous rocks include granite, basalt, and pumice.
In contrast, the formation of metamorphic rocks occurs when existing rocks are transformed due to high temperature and pressure. Metamorphism can occur when rocks are buried deep within the Earth's crust, or when they are subjected to high pressure and temperature due to tectonic activity. The transformation of existing rocks can result in the formation of new minerals, textures, and structures within the rocks. Examples of metamorphic rocks include marble, slate, and gneiss.
In conclusion, the formation of igneous and metamorphic rocks differ in terms of their origin and formation process. Igneous rocks are formed from the solidification of molten magma or lava, while metamorphic rocks are formed from the transformation of existing rocks due to high temperature and pressure. While both types of rocks can be found in various locations around the world, they differ in their properties, appearance, and composition.
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