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The Rock Cycle

The Rock Cycle. What is a Rock?. Solid mixture of naturally occurring substances May contain both organic and inorganic material Vary in size Vary in composition. Types of Rocks. Igneous Sedimentary Metamorphic. Gabbro - Igneous. Coquina - Sedimentary. Blueschist - Metamorphic.

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The Rock Cycle

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  1. The Rock Cycle

  2. What is a Rock? • Solid mixture of naturally occurring substances • May contain both organic and inorganic material • Vary in size • Vary in composition

  3. Types of Rocks • Igneous • Sedimentary • Metamorphic Gabbro - Igneous Coquina - Sedimentary Blueschist - Metamorphic

  4. IGNEOUS ROCKS

  5. What are Igneous Rocks? • Igneous rocks are rocks that are formed from the crystallization of magma.

  6. Formation of Igneous Rocks • Extrusive – fine-grained rocks that cool quickly on Earth’s surface • Example: pumice • Intrusive – coarse-grained rocks that cool slowly beneath Earth’s surface • Example: granite

  7. Sedimentary Rocks

  8. Formation of Sedimentary Rock • Weathering – processes that break rock into smaller pieces

  9. Formation of Sedimentary Rock • Erosion – the removal and movement of surface materials from one location to another

  10. Formation of Sedimentary Rock • Deposition – occurs when sediments are laid down on the ground or sink to the bottoms of bodies of water.

  11. Formation of Sedimentary Rock • Burial – sediments are layered on top of each other

  12. Formation of Sedimentary Rock • Lithification – processes that transform sediments into sedimentary rocks • Compaction • Cementation

  13. Metamorphic Rock

  14. Metamorphic Rock • High temperature and pressure combine to alter a rock without melting it • High temperatures • Earth’s internal heat • High pressure • Weight of overlying rock • Compression during mountain building

  15. The Rock Cycle

  16. The Rock Cycle • The continuous changing and remaking of rocks • Any rock can be changed into any type. • There is more than one path in the rock cycle.

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