Unit 3050: Introduction to Geology

1. What is Geology?

• Definition and scope of geology
• Importance of geology in understanding Earth and its processes
• Sub-disciplines of geology:
  • Mineralogy: study of minerals
  • Petrology: study of rocks
  • Geomorphology: study of landforms and surface processes

2. Earth's Layers and Plate Tectonics

• Structure of the Earth:
  • Crust (continental and oceanic)
  • Mantle (upper and lower)
  • Core (outer and inner)
• Properties and composition of each layer
• Plate tectonics theory:
  • Historical development and evidence
  • Continental drift theory
  • Seafloor spreading
• Types of plate boundaries:
  • Divergent
  • Convergent
  • Transform
• Geological features and phenomena resulting from tectonic activity

3. Rock Types and Formation

• Overview of the rock cycle
• Igneous rocks:
  • Formation by crystallization of magma
  • Intrusive vs. extrusive types
  • Examples
• Sedimentary rocks:
  • Formation by sedimentation and lithification
  • Clastic, chemical, and organic types
  • Examples
• Metamorphic rocks:
  • Formation through metamorphism
  • Agents of metamorphism (heat, pressure, chemically active fluids)
  • Foliated vs. non-foliated
  • Examples

4. Geological Time Scale

• Concept of deep time and Earth's age
• Divisions of geological time:
  • Eons
  • Eras
  • Periods
  • Epochs
• Methods of dating rocks and fossils (relative and absolute dating)
• Significance of the geological time scale in understanding Earth’s history

5. Fossils and Paleontology

• Definition and types of fossils
• Fossilization processes
• Importance of fossils in reconstructing past environments and life
• Introduction to paleontology:
  • Methods and techniques
  • Major fossil discoveries
  • Evolutionary significance

6. Earthquakes and Volcanoes

• Causes of earthquakes:
  • Sudden release of energy along faults
  • Seismic waves and measurement (Richter scale, moment magnitude)
• Volcanic activity:
  • Types of volcanoes
  • Magma formation and eruption processes
  • Volcanic hazards
• Impact on Earth's surface and human society
• Monitoring and mitigation techniques

7. Weathering and Erosion

• Definitions and differences
• Types of weathering:
  • Physical (mechanical)
  • Chemical
  • Biological
• Processes and agents of erosion
• Role in shaping landscapes
• Examples of landforms created by weathering and erosion

8. Geologic Resources and Environmental Geology

• Types of geologic resources:
  • Minerals
  • Fossil fuels (coal, oil, natural gas)
  • Groundwater
• Extraction and environmental impacts
• Environmental geology:
  • Geological hazards (landslides, floods, subsidence)
  • Conservation and sustainable use of resources
  • Role of geology in environmental protection

9. Geological Maps and Fieldwork

• Purpose and types of geological maps
• Reading and interpreting geological maps:
  • Symbols and legends
  • Rock formations and structures
• Importance of fieldwork in geology:
  • Data collection techniques
  • Tools and safety in the field
  • Case studies and examples