1. Rocks

4. Granite Basalt Obsidian Pumice

5. Composition of igneous rocks Felsic Mafic Elements Si & Al Fe & Mg Melting pt low temp. high temp. Density low (light) high (heavy) Color light dark e.g. granite, diorite basalt, gabbro

6. Global Composition Distribution Continents- Felsic Oceans- Mafic Digital Elevation Model (DEM)

9. Felsic Intermediate Mafic Intrusive Extrusive Rhyolite Classifying igneous rocks Andesite Basalt Granite Diorite Gabbro

10. Yellowstone Sierra Nevada Andes Ocean basement Hawaii New Zealand Rhyolite Andesite Basalt Granite Diorite Gabbro

11. Intrusive features batholith dike (vertical) sill (horizontal) Pluton : body of intrusive rock

12. Famous extrusive rocks

13. Famous intrusive rocks

21. Famous sedimentary rocks

23. Metamorphic processes

25. Somewhat famous metamorphic rocks

27. Granite Basalt Sandstone Shale Limestone Gneiss Schist Can you see the mineral grains? Are the grains interlocking, or cemented together? Are there layers or stripes (foliation) to the grains? yes no interlocking cemented yes no Is the rock “scaly” or “glittery”? yes no Is it very dark colored (mafic)? yes no Definitive test: Does it react to a weak acid by “fizzing”? Ok substitute test for today: is it layered in flat sheets? no yes yes no Double check: is it layered in flat sheets? no yes Include Rock # Rock Name Rock Type

28. Answer key Granite Basalt Sandstone Shale Limestone Gneiss Schist 2 1 3 5 4 6 7