Geology

  1. Historical Geology: A Journey Through Time
    1. The Precambrian Eon
      1. Earth's Formation
        1. Accretion of the Earth
          1. Planetesimal Collision
            1. Heat Generation
            2. Differentiation of Layers
              1. Core Formation
                1. Mantle Development
                  1. Crust Formation
                2. Origin of Continents and Oceans
                  1. Early Crust Formation
                    1. Komatiite Volcanism
                      1. Granite Formation
                      2. Supercontinents
                        1. Rodinia
                          1. Earlier Supercontinents
                        2. Origin of Life and Early Life Forms
                          1. First Life
                            1. Prokaryotes
                              1. Archaea and Bacteria
                              2. Stromatolites
                                1. Cyanobacterial Mats
                                  1. Fossil Evidence
                                  2. Oxygenation of Atmosphere
                                    1. Great Oxidation Event
                                      1. Banded Iron Formations
                                      2. Eukaryotic Cells
                                        1. Endosymbiotic Theory
                                    2. The Paleozoic Era: Ancient Life
                                      1. The Cambrian Explosion
                                        1. Diversification of Life
                                          1. Hard Parts Development
                                            1. Major Animal Phyla
                                            2. Ordovician Period
                                              1. Marine Invertebrates
                                                1. First Vertebrates
                                                2. Silurian Period
                                                  1. Rise of Fishes
                                                    1. First Land Plants
                                                    2. Devonian Period
                                                      1. Age of Fishes
                                                        1. Rise of Amphibians
                                                          1. Forest Development
                                                          2. Carboniferous Period
                                                            1. Coal Swamps
                                                              1. Rise of Reptiles
                                                                1. Insect Diversification
                                                                2. Permian Period
                                                                  1. Pangaea Formation
                                                                    1. Reptile Dominance
                                                                      1. The Permian Extinction
                                                                        1. Largest Mass Extinction
                                                                          1. Causes and Effects
                                                                      2. The Mesozoic Era: Age of Dinosaurs
                                                                        1. Triassic Period
                                                                          1. Breakup of Pangaea
                                                                            1. First Dinosaurs
                                                                              1. First Mammals
                                                                              2. Jurassic Period
                                                                                1. Dinosaur Diversification
                                                                                  1. First Birds
                                                                                    1. Shallow Seas
                                                                                    2. Cretaceous Period
                                                                                      1. Flowering Plants
                                                                                        1. Dinosaur Peak
                                                                                          1. The Cretaceous-Paleogene Extinction Event
                                                                                            1. Asteroid Impact Theory
                                                                                              1. Volcanic Activity
                                                                                                1. Dinosaur Extinction
                                                                                            2. The Cenozoic Era: Age of Mammals
                                                                                              1. Paleogene Period
                                                                                                1. Mammal Radiation
                                                                                                  1. Grassland Expansion
                                                                                                  2. Neogene Period
                                                                                                    1. Continued Mammal Evolution
                                                                                                      1. Climate Cooling
                                                                                                      2. Quaternary Period
                                                                                                        1. Evolution of Primates
                                                                                                          1. Rise of Humans
                                                                                                            1. The Pleistocene Ice Ages
                                                                                                              1. Glacial Cycles
                                                                                                                1. Megafauna Extinctions
                                                                                                                2. Holocene Epoch
                                                                                                                  1. Recent Climate
                                                                                                                    1. Human Impact

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                                                                                                              14. Economic and Environmental Geology