(Solved): EXERCISE 5.6 Interpreting Igneous Cooling Histories from Textures Name: Course: Section: Date: Exa ...

EXERCISE 5.6 Interpreting Igneous Cooling Histories from Textures Name: Course: Section: Date: Examine the igneous rocks provided by your instructor. Apply what you have learned about the origins of igneous textures to fill in the "cooling history" column in the study sheets at the end of the chapter. Use the following questions as a guide to your interpretation. • Which specimens cooled quickly? Which cooled slowly? • Which specimens cooled very rapidly at the Earth's surface (i.e., are extrusive)? • Which specimens cooled slowly beneath the surface (i.e., are intrusive)? • Which specimens cooled from a magma rich in gases? • Which specimens experienced more than one cooling rate? Igneous Rock 1 Dark, fine grained Igneous Rock 2 Light colored, coarse grained Igneous Rock 3 Fine grained Medium colored Igneous Rock 4 Vesicular •Coarse grained •Dark igl Igneous Rock 6 Vesicular Igneous Rock 7 Glassy Igneous Rock 8 Coarse grained and medium color Igneous Rock 9 Fine grained and light colored Igneous Rock 10 Coarse grained, dark