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E.S. 6: Rocks and Rock Cycle

E.S. 6: Rocks and Rock Cycle. SMS Earth Science. Things to know:. Rocks can be identified on the basis of mineral content and texture. The process by which rocks are formed define the three major groups.

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E.S. 6: Rocks and Rock Cycle

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  1. E.S. 6: Rocks and Rock Cycle SMS Earth Science

  2. Things to know: • Rocks can be identified on the basis of mineral content and texture. • The process by which rocks are formed define the three major groups. • The rock cycle is the process by which all rocks are formed and how basic Earth materials are recycled through time.

  3. Rock Cycle

  4. Igneous Rocks • Igneous rocks form from molten rock that cools and hardens either below or on Earth’s surface.

  5. Types of Igneous Rock • Extrusive igneous rocks cool quickly on Earth’s surface. • Small or no crystals in rock, smooth texture. • Examples: pumice, obsidian, and basalt.

  6. Types of Igneous Rock • Intrusive igneous rocks cool slowly below Earth’s surface. • Large crystals and coarse texture. • Examples: granite

  7. Sedimentary Rocks • Sedimentary rocks form from compaction and cementation of sediment. • Materials: • rock fragments • organic matter • chemical precipitation.

  8. Types of Sedimentary Rocks • Clastic sedimentary rocks are made up of fragments of other rocks. • Examples: sandstone, conglomerate, and shale. Sandstone Conglomerate Shale

  9. Types of Sedimentary Rocks • Non-clastic sedimentary rocks that precipitate from a solution. • Examples: limestone and rock salt. Limestone Rock salt

  10. Metamorphic Rocks • Metamorphic rocks form when any rock is changed by heat and pressure.

  11. Types of Metamorphic Rock • Foliated metamorphic rocks have bands of different minerals. • Examples: slate, schist, gneiss. Slate Schist Gneiss

  12. Types of Metamorphic Rock • Unfoliated metamorphic rocks have little or no banding and are the same throughout. • Examples: marble and quartzite. marble quartzite

  13. End

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