1 / 12

Rocks Rock!

Rocks Rock!. Jan McClain Lydene Aldrich Virginia Acey. Agenda. Types of Rocks Igneous Sedimentary Metamorphic. Igneous Rocks. “Fire Rock” Intrusive Extrusive. Igneous Rocks. Granite – Intrusive rock formed slowly from pockets of magma that are trapped underground.

mavis
Télécharger la présentation

Rocks Rock!

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 Rock! Jan McClain Lydene Aldrich Virginia Acey

  2. Agenda Types of Rocks Igneous Sedimentary Metamorphic

  3. Igneous Rocks “Fire Rock” Intrusive Extrusive

  4. Igneous Rocks • Granite – Intrusive rock formed slowly from pockets of magma that are trapped underground. • Pumice – Extrusive formed when lava cools quickly above ground. It is characterized by little pockets of air holes. • Scoria – Extrusive formed when lava cools quickly above ground. A kind of glass and not a mixture of minerals. • Obsidian – Extrusive formed when lava cools quickly above ground. It is actually glass and not a mineral and the edges of the rock are very sharp.

  5. Sedimentary Rocks “Rocks formed by erosion and pressure.”

  6. Sedimentary Rocks • Plant and animal matter settle in the sediment. • Pressure from the weight of the sediment creates layers of solid rock. • The rock layers are unique to sedimentary rocks. • Only rock that contains fossils. • Types: sandstone, limestone, gypsum, conglomerate, and shale.

  7. Metamorphic Rocks “Rocks altered by heat or by heat and pressure.”

  8. Metamorphic Rocks • Metamorphic rocks are sedimentary or igneous rocks that have been modified or changed in form. • Metamorphic rocks are identified by the types of minerals they contain and their texture. • These rocks make a "ching" sound instead of a "chunk" sound when tapped. • They are characterized by ribbonlike layers and may have shiny crystals. • Examples of this rock type include gneiss and marble.

  9. Melting Metamorphic Rock Heat & Pressure Sedimentary Rock Magma Compacting &Cementing Cooling Weathering & Erosion Sediment Igneous Rock Rock Cycle

  10. What geologic features do we see locally as the result of the Rock Cycle? • Erosion evidence • Sedimentary rocks • Rivers • Hills

  11. What geologic features do we NOT see as the result of the Rock Cycle? • Volcanoes • Glacier Deposits • Deserts

  12. The End

More Related