1 / 15

Understanding the Rock Cycle: Types of Igneous, Sedimentary, and Metamorphic Rocks

Explore the rock cycle in detail, examining the three main types of rocks: igneous, sedimentary, and metamorphic. Igneous rocks form from the solidification of magma or lava, classified as extrusive or intrusive based on their cooling rate. Sedimentary rocks arise from sediments or chemical processes, including clastic, chemical, and organic types. Metamorphic rocks result from heat and pressure altering existing rock, categorized into foliated and non-foliated textures. Dive deeper into geology and learn how these rock types interact in the Earth's crust.

zora
Télécharger la présentation

Understanding the Rock Cycle: Types of Igneous, Sedimentary, and Metamorphic Rocks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rocks 3.1

  2. The Rock Cycle

  3. Igneous Rocks • Form from the solidification of melted minerals (magma or lava). • Magma = melted rock underground • Lava = melted rock aboveground • Extrusive Igneous Rocks – Rocks formed from hardened lava. • Quick cooling results in extrusive igneous rocks with fine-grained or glassy textures. • Intrusive Igneous Rocks – Rocks formed from hardened magma. • Slow cooling results in intrusive igneous rocks with coarse-grained textures.

  4. Sedimentary Rocks Sedimentary rocks may be made of rock fragments—sediments—or by chemical reactions. The classification of sediments is shown below.

  5. 3 Types of Sedimentary Rock • Clastic • Sedimentary rocks made of cemented sediments. • Chemical • Form from chemical precipitation. When minerals settle out from a solution, they come together to form chemical rocks. • Organic • Rocks that come from the remains of organic matter. A good example is coal.

  6. Clastic

  7. Chemical

  8. Organic

  9. Metamorphic Rocks • Formed when heat and pressure changes existing rock. • This can be done 2 ways: • Contact Metamorphism (heat driven) – when magma intrudes into a previously existing rock layer, and “bakes” the surrounding rock. • Regional Metamorphism (pressure driven) – when intense pressure is applied to previously existing rock. Is driven by plate tectonics.

  10. Contact Metamorphism Contact Metamorphism Previously Existing Rock

  11. Contact Metamorphism Cont…

  12. Regional Metamorphism Pressure Pressure

  13. Types of Metamorphic Rocks Foliated Non-Foliated No banded appearance. • Have a banded appearance.

More Related