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Ch4 Sec3

Ch4 Sec3. Sedimentary Rocks. Key Concepts. How do sedimentary rocks form? What are the three major types of sedimentary rocks? How are sedimentary rocks used?. Key Terms. Sediment Erosion Deposition Compaction Cementation Clastic rock Organic rock Chemical rock. Ch4 Sec3.

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Ch4 Sec3

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  1. Ch4 Sec3 Sedimentary Rocks

  2. Key Concepts • How do sedimentary rocks form? • What are the three major types of sedimentary rocks? • How are sedimentary rocks used?

  3. Key Terms • Sediment • Erosion • Deposition • Compaction • Cementation • Clastic rock • Organic rock • Chemical rock

  4. Ch4 Sec3 • From Sediment to Rock • Sediment: is small, solid pieces of material that come from rocks or living things • Most sedimentary rocks are formed through a series of processes: erosion, deposition, compaction, and cementation

  5. Ch4 Sec3 • Erosion: running water, wind, or ice loosen and carry away fragments of rock • Deposition: is the process by which sediment settles our of the water or wind carrying it • Compaction: the process that presses sediments together • Cementation: is the process in which dissolved minerals crystallize and glue particles of sediment together

  6. Ch4 Sec3 • Types of Sedimentary Rock • There are three major groups of sedimentary rocks • Clastic: is a sedimentary rock that forms when rock fragments are squeezed together • Organic rock: forms where the remains of plants and animals are deposited in thick layers • Chemical rock: when minerals that are dissolved in a solution crystallize

  7. Ch4 Sec3 • Uses of Sedimentary Rocks • People have used sedimentary rocks throughout history for many different purposes including: building materials and tools

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