Useful Links
Earth and Atmospheric Sciences
Earth's Structure and Processes
Geology
1. Introduction to Geology
2. Earth's Interior Structure and Composition
3. Minerals: The Building Blocks of Rocks
4. The Rock Cycle and Igneous Rocks
5. Weathering, Sediment, and Sedimentary Rocks
6. Metamorphism and Metamorphic Rocks
7. Geologic Time
8. Plate Tectonics: A Unifying Theory
9. Structural Geology: Deformation of the Crust
10. Earthquakes and Seismology
11. Volcanism
12. Surface Processes: Geomorphology
13. Historical Geology: A Journey Through Time
14. Economic and Environmental Geology
Plate Tectonics: A Unifying Theory
Historical Precursors
Continental Drift
Alfred Wegener's Hypothesis
Continental Fit
Matching Geology
Evidence for Continental Drift
Fit of Continents
Coastline Matching
Continental Shelf Fit
Fossil Evidence
Glossopteris
Mesosaurus
Lystrosaurus
Rock Types and Structures
Mountain Belts
Rock Formations
Paleoclimatic Evidence
Glacial Deposits
Coal Deposits
Rejection and Problems
Lack of Mechanism
Scientific Opposition
Seafloor Spreading
Discovery of Mid-Ocean Ridges
Ocean Floor Mapping
Ridge Characteristics
Mechanism of Seafloor Spreading
Harry Hess's Hypothesis
Convection Currents
Geomagnetic Reversals and Seafloor Magnetism
Magnetic Stripes
Vine-Matthews Hypothesis
Confirmation of Spreading
The Theory of Plate Tectonics
Earth's Lithospheric Plates
Major Plates
Minor Plates
Plate Boundaries
Divergent Boundaries
Rifting Process
Mid-Ocean Ridges
Spreading Centers
Rift Valleys
Continental Rifts
East African Rift
Convergent Boundaries
Oceanic-Continental Convergence
Subduction Zones
Volcanic Arcs
Oceanic-Oceanic Convergence
Island Arcs
Deep Ocean Trenches
Continental-Continental Convergence
Mountain Building
Collision Zones
Transform Boundaries
Transform Faults
Conservative Margins
San Andreas Fault System
Plate Interactions and Features
Subduction Zones
Benioff Zones
Volcanic Activity
Earthquake Patterns
Collision Zones
Mountain Ranges
Crustal Thickening
Transform Faults
Strike-Slip Motion
Offset Features
Evidence for Plate Tectonics
Hot Spots and Mantle Plumes
Hawaiian Island Chain
Yellowstone Hot Spot
Fixed Hot Spots
Earthquake Patterns
Seismic Belts
Focal Mechanisms
Ocean Drilling Data
Age of Ocean Floor
Sediment Thickness
Distribution of Volcanoes
Ring of Fire
Volcanic Belts
Paleomagnetic Evidence
Apparent Polar Wandering
Magnetic Reversals
Driving Mechanisms of Plate Motion
Slab Pull
Dense Oceanic Lithosphere
Gravitational Force
Ridge Push
Elevated Mid-Ocean Ridges
Gravitational Sliding
Mantle Convection
Thermal Convection
Convection Cells
Role of Gravity and Density Differences
Isostasy
Density Contrasts
Plate Tectonics and Earth's Evolution
Supercontinent Cycles
Pangaea
Rodinia
Future Supercontinents
Wilson Cycle
Ocean Basin Evolution
Tectonic Controls on Climate
Tectonic Controls on Evolution
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7. Geologic Time
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9. Structural Geology: Deformation of the Crust