1 / 13

Rocks

Rocks. Rocks are classified…. …...According to formation Igneous – volcanic material Sedimentary – compressed remains Metamorphic – changed by heat/pressure. Igneous Rocks. Formed when magma (lava) cools and solidifies. Most common Igneous rocks include Granite and Basalt. Granite.

ecrowder
Download Presentation

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

  2. Rocks are classified… …...According to formation • Igneous – volcanic material • Sedimentary – compressed remains • Metamorphic – changed by heat/pressure

  3. Igneous Rocks • Formed when magma (lava) cools and solidifies. Most common Igneous rocks include Granite and Basalt. Granite Basalt

  4. Granite Hard, coarse, multi coloured Cooled magma inside earth Wicklow Mtns Basalt Heavy, black Lava cooled on surface Giants Causeway Igneous

  5. Basalt – Giant’s Causeway Granite – Mount Rushmore

  6. Sedimentary Rocks • Formed when the remains of dead sea creatures and plants build up in layers. They get compressed and cemented together over time. Most common include Limestone and Sandstone. Limestone Sandstone

  7. Sandstone Coarse, brown, red Compressed sand grains Magillicuddy Reeks Limestone White/grey Compressed fish remains/skeletons The Burren Sedimentary

  8. Limestone • Strata (layers) • Horizontal bedding planes • Vertical joints • Permeable (water seeps through) • Easily weathered • Contains fossils

  9. Metamorphic Rocks • Formed when either Igneous or Sedimentary rock is put under great heat or pressure. Marble Quartzite

  10. Marble Hard, crystal White, green, red, black Limestone changes to marble through heat or pressure Connemara Metamorphic

  11. Key Words • Strata: a horizontal layer in rock or soil, sometimes called bedding planes. • Joint: a vertical crack in rock. • Permeable: allows water to pass through. • Porous: holds water and allows it to pass through. • Fossil: the preserved remains of a plant or animal.

  12. Extraction industry • Shaft mining – underground, for lead and coal • Offshore drilling – for oil + gas • Open cast mining + Quarrying – surface, for stone, sand, gravel and peat

More Related