What Are the 3 Types of Sedimentary Rocks?

Common sedimentary rocks include sandstone, limestone, and shale. These rocks often start as sediments carried in rivers and deposited in lakes and oceans. When buried, the sediments lose water and become cemented to form rock.

What Are the 3 Types of Sedimentary Rocks?

There are three main types of sedimentary rocks: clastic, chemical, and organic. Clastic sedimentary rocks are made up of bits of other rocks that have been broken off and transported by wind, water, or ice.

Chemical sedimentary rocks are made when minerals in solution are deposited on the surface of the earth. Organic sedimentary rocks form when the remains of plants and animals are deposited on the earths surface.

Clastic sedimentary rocks are further classified according to the size of the particles that make them up. If the particles are larger than 2 mm, the rock is called a conglomerate or a breccia.

If the particles are between 1/16 mm and 2 mm, the rock is called a sandstone. If the particles are smaller than 1/16 mm, the rock is called a siltstone or a claystone.

Chemical sedimentary rocks are classified according to the minerals that make them up. If the rock is made up of calcium carbonate, it is called a limestone. If the rock is made up of calcium sulfate, it is called a gypsum.

If the rock is made up of silicon dioxide, it is called a chert. Organic sedimentary rocks are classified

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