1. Igneous, Metamorphic, Sedimentary Rocks

2. Igneous Rocks Where do Igneous rocks come from? Some of the first rocks How are they classified? – Where they are from – Texture – Mineral Composition

3. Extrusive Rock Igneous rock formed by lava on the earth’s surface. (Basalt)

4. Intrusive Rock Igneous rock formed when magma beneath the earth’s surface hardens. (Granite)

5. Texture Extrusive=Rough or smooth Intrusive=Rough or coarse (sandpaper)

6. Mineral Composition Different minerals give rock its color Feldspar (pink) Hornblende Mica (light gray) Quartz (smoky)

7. Sedimentary Rocks What is sediment? How does it become rock? – Erosion-Depostition-Compaction-Cementation – THIS TAKES A LONG TIME!

11. 3 Main Types of Sedimentary Clastic – When pieces of rock squeeze together

12. 3 Main Types of Sedimentary Organic – When dead plants and animals compact together

13. 3 Main Types of Sedimentary Chemical – Minerals dissolve and crystalize

14. Metamorphic Rocks Sedimentary or Igneous rock that changes because of heat or pressure Classifying these rocks – Foliated – Nonfoliated