Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Geog 1120: Intro to Earth Sciences Kwantlen Polytechnic University Fall 2016 J. Koch Lab 2 Identification of Igneous Rocks Objective: To recognize the major types of igneous rocks and to understand the genetic significance of their texture and composition. 1. Identify the rock specimens provided and identify each one in the accompanying table. (12) 2. What criteria did you use to identify the igneous rock specimens? (4) 3. What is the origin of the vesicles in basalt? (1) 4. What characteristics distinguish granite from basalt? Be specific in terms of chemical composition by referring to the igneous rock classification chart. (4) 5. What is the difference in chemical composition between samples 5 and 6? What characteristics do they have in common? (2) 6. With what type of geologic event is andesite usually associated? Where in North America would one look for it? (2) 7. What geomorphologic events are implied if a granitic body is exposed at the surface? (2) Bin Rock name number Intrusive/ Extrusive Texture Other features Major minerals present