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Juana Geologic Timescale

  • Formation of Earth
    4500 BCE

    Formation of Earth

    Comets were forming Earth, Earth was molten.
  • Earth starts to cool & solidify
    4400 BCE

    Earth starts to cool & solidify

    Earth begins to cool and solidify, water is beginning to form on surface.
  • Water World
    4000 BCE

    Water World

    Earth is covered 90% in water, ocean is green
  • Granite Planet
    3400 BCE

    Granite Planet

    Oceans dominate Earth, continents begin to form, granite appears
  • Blue Planet
    1500 BCE

    Blue Planet

    Planet is blue, continents are moving
  • Rodinia
    1000 BCE

    Rodinia

    Rodinia is formed
  • Snowball Earth
    700 BCE

    Snowball Earth

    Earth is covered in ice
  • Eruptions
    650 BCE

    Eruptions

    Volcanic eruptions are breaking Rodinia apart
  • Cambrian
    550 BCE

    Cambrian

    Ice melts, Rodinia is broken part, Ozone begins to form
  • Ordovician
    485 BCE

    Ordovician

    Earth was warm, massives glaciers form, sea levels drop.
  • Silurian
    443 BCE

    Silurian

    Warm and stable climate, 600+ species
  • Devonian
    400 BCE

    Devonian

    Ozone fully formed, very warm climate, high sea levels
  • Carboniferous
    358 BCE

    Carboniferous

    Animals able to come onto land, Pangaea forming tropical swamps
  • Permian
    298 BCE

    Permian

    Pangaea is fully formed
  • Mass Extinction
    251 BCE

    Mass Extinction

    Volcanic eruptions wipe out 95% of species
  • Triassic
    251 BCE

    Triassic

    Dinosaurs evolve
  • Jurassic
    201 BCE

    Jurassic

    Dinosaurs dominate Earth
  • Cretaceous
    145 BCE

    Cretaceous

    Pangaea is broken apart, diamonds come to surface, dinosaurs rule
  • Mass Extinction 2
    65 BCE

    Mass Extinction 2

    Dinosaurs are wiped out by major meteor as well as 75% of species on Earth
  • Tertiary
    65 BCE

    Tertiary

    Mammals evolve, flowering plants, moist climate
  • Grand Canyon
    6 BCE

    Grand Canyon

    Grand Canyon fully forms
  • Quaternary
    2 BCE

    Quaternary

    2.6 mya to present day, humans dominate, climate change