What are sedimentary rocks

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Sedimentary rocks are made when sand, mud and pebbles get laid down in layers. Over time, these layers are squashed under more and more layers. Eventually, the layers are lithified – turned to rock.

Explanation:

There are three different types of sedimentary rocks: clastic, organic (biological), and chemical. Clastic sedimentary rocks, like sandstone, form from clasts, or pieces of other rock.

Oil, natural gas, coal, and uranium, our major energy resources, are formed in and come from sedimentary rocks.

Sand and gravel for construction come from sediment.

Sandstone and limestone are used for building stone.

Rock gypsum is used to make plaster.

Limestone is used to make cement.

Salt is used for flavoring.

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