ENV100Y5 Lecture Notes - Lecture 5: Rock Cycle, Extrusive Rock, Refraction

• School: UTM
• Department: Environment
• Course: ENV100Y5
• Professor: Barbara Murck

Document Summary

Geological cycles: if we didn"t have rocks breaking down, we wouldn"t have soil nutrients, fossil fuels, the understanding of landscapes, climate : rock cycle. How rocks are formed and how they transform into other types of rocks. Heating, melting, cooling, breaking, reassembling of rocks and minerals: tectonic cycle. Looks closely at the internal processes that are driving the movement of plates, volcanoes- all dynamic activity at the surface: types of rocks: Igneous rock= ignite rock that has melted// ex: granite. Formed from magma that has cooled (liquid), lava is magma that has reached the surface. Intrusive (plutonic) rock- cools slower, well below earth"s surface: extrusive rock- cools quickly, outside. Sedimentary rock= bits and pieces transported by water/wind/ice and then deposited. *- lithification- forms & cements rock through the processes of compaction and cementation. You will find a fossil in sedimentary rock, but not on igneous.