William P. Cunningham University of Minnesota Mary Ann Cunningham Vassar College Copyright ? The McGraw-Hill Companies, Inc. Permission required for reproduction or display. *See PowerPoint Image Slides for all figures and tables pre-inserted into PowerPoint without notes. Chapter 14 Lecture Outline* Geology and Earth Resources Outline Tectonic Processes Rocks and Minerals Rock Cycle Economic Geology and Mineralogy Environmental Effects of Resource Extraction Mining Reclamation Conserving Geological Resources Geological Hazards Earth is a Dynamic Planet A Layered Sphere Core - interior composed of dense, intensely hot metal, mostly iron. Generates magnetic field enveloping the earth. Mantle - hot, pliable layer surrounding the core. Less dense than core.