4A - Sedimentary Rock

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What is sedimentary rock?

Back

Sedimentary rock is a type of rock formed from the accumulation and compaction of mineral and organic particles, often containing fossils.

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What are fossils?

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Fossils are the preserved remains or traces of ancient living organisms found in sedimentary rock.

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What process forms sedimentary rock from sediment?

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Compaction and cementation are the processes that form sedimentary rock when layers of sediment are pressed together and 'glued' by minerals.

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What is sediment?

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Sediment consists of tiny pieces of broken rock, such as sand, silt, and clay, that can accumulate in layers.

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What is the difference between sediment and sedimentary rock?

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Sediment is loose material, while sedimentary rock is formed when sediment is compacted and cemented together.

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What are the main types of rocks?

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The three main types of rocks are igneous, sedimentary, and metamorphic.

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How do fossils form in sedimentary rock?

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Fossils form when organisms are buried by sediment, which protects them from decay and allows them to be preserved.

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What is erosion?

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Erosion is the process by which rocks and soil are worn away and transported by wind, water, or ice.

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What is deposition?

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Deposition is the process where sediment is laid down in new locations, often in bodies of water.

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What is compaction?

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Compaction is the process of pressing sediment together under the weight of overlying materials.