Sedimentary Rocks Facts

Sedimentary Rocks Facts
Rocks on Earth are often broken down by the process of weathering. These broken particles, called sediments, are carried away by streams and rivers. When these particles collect and become compacted together over time, they stick together and form a larger structure. These larger structures are referred to as sedimentary rocks.
Interesting Sedimentary Rocks Facts:
Sedimentary rocks are extremely important resources that give us clues about the Earth's past.
Sedimentary rock has layers of sediments that are arranged according to their density.
Compaction is the process by which sediments form sedimentary rock.
Cementation is the process of minerals dissolving and then holding the particles together in a sedimentary rock.
The process by which sediments harden to form sedimentary rock is called lithification.
Fossils of organisms become buried over time and are often found in sedimentary rock.
Sedimentary rocks are divided among three different groups based on their composition and texture.
Classic sedimentary rock forms when older rocks break down and become compacted together.
Examples of classic sedimentary rock include sand-stone and breccia.
Sand-stone is a sedimentary rock that has been used to make housewares since prehistoric times.
Organic sedimentary rock has a high amount of organic material and can be used as a source of petroleum and tar.
Examples of organic sedimentary rock include limestone and coal.
Chemical sedimentary rock forms when minerals come out of a solution and crystallize.
The majority of chemical sedimentary rock comes from minerals left behind by evaporated water.
An example of chemical sedimentary rock includes halite which is also known as table salt.

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