Preface v // I Introduction to Geology 1 // Exercise 1. Earth Materials, Geologic Time, and Geologic Processes 3 // Exercise 2. Maps, Aerial Photographs, and Satellite Images 19 // Exercise 3. Measurements, Basic Calculations and Conversions, and Graphs 36 // II Introduction to Geologic Hazards 45 // Exercise 4. Exercise 5. Exercise 6. // Exercise 7. Exercise 8. Exercise 9. Exercise 10. Exercise 11. // Volcanoes and Volcanic Hazards 52 Hazards of Mount St. Helens 69 // Earthquake Epicenters, Intensities, Risks, Faults, Nonstructural Hazards, and Preparation // The Loma Prieta Earthquake of 1989 102 Landslides and Avalanches 114 Subsidence 141 River Floods 154 Coastal Hazards 174 // 82 // III Introduction to Water Resources and Contamination 193 // Exercise 12. Groundwater Hydrology 198 // Exercise 13. Water Quality Data and Pollution Sources 206 // Exercise 14. Lake and River Contamination from Industrial Waste 217 // Exercise 15. Groundwater and Surface Water Contamination from Resource Extraction 227 // Exercise 16. Groundwater Overdraft and Saltwater Intrusion 239 // IV Introduction to Sustainability: Resource Planning and Global Change 251 // Exercise 17. Geology and Regional Planning 257 Exercise 18. Global Change and Sustainability 268 // Appendices // Units and Conversions 281 Geologic Time Scale 283 Population Data 284 Topographic Map Scales 285 Color Plates 286