GEOL 1001 Lecture : Geology 1001 Notes
Document Summary
Important relationships between people and the natural environment: problems addressed by geology: natural hazards, resources, world population growth and environmental issues. Involves vast times millions/billions of years: an appreciation of geologic time is important because many processes are very gradual. Hydrosphere, and at earth"s surface: the earth system is also powered by earth"s interior temperatures, temperatures increast with depth. Variation of temperature with depth defines the geothermal gradient (geotherm) Layers that are defined by composition: crust (continental and oceanic, mantle, core. Layers that are defined by physical properties: lithosphere (uppermost part of mantle, asthenosphere (separated under lithosphere, mesosphere. Rocks and the rock cycle: basic rock types: Matching mountain ranges: paleoclimatic evidence (paleo = old, climatic = climate) Polar wandering paths for eurasia and north america: the figured paths don"t make sense with the current locations of the continents, when continental drift is taken into account, the figured paths make more sense.
