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Explain How Each Major Type of Rock Forms?

Igneous rocks are formed from melted rock deep inside the earth. Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons. Metamorphic rocks formed from other rocks that are changed by heat and pressure underground.

Explain How Each Major Type of Rock Forms?

Rocks are a naturally occurring solid material that is made up of an aggregate of minerals and other organic materials. There are three major types of rocks that form on Earth – igneous, sedimentary, and metamorphic. Each type of rock is formed through a unique process and has its own characteristics.

Igneous rocks are the oldest type of rock and form when molten material, known as magma, cools and solidifies. Igneous rocks can be formed either beneath the Earth’s surface (intrusive) or above the surface (extrusive). Intrusive igneous rocks form when magma cools slowly beneath the Earth’s surface and is exposed to extreme pressure.

This process causes the magma to form coarse grained crystals. Examples of intrusive igneous rocks include granite, gabbro, and diorite. Extrusive igneous rocks form when magma cools rapidly above the Earth’s surface and is exposed to much less pressure. This process causes the magma to cool rapidly, forming small crystals. Examples of extrusive igneous rocks include basalt, andesite, and rhyolite.

Sedimentary rocks are the second most common type of rock

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