Alexis Geologic Timeline

Timeline created by yeeyee.alexis
  • 4,500 BCE

    Beginning of Earth

    Beginning of Earth
    Temperature: 8000F
    Comets forming the Earth.
    Earth was molten.
  • 4,400 BCE

    Water was beginning to form on Earth

    Water was beginning to form on Earth
    Starting to cool and solidify.
  • 4,000 BCE

    Earth is covered in water vapor

    Earth is covered in water vapor
    Water world: 90% (green oceans and iron)
    Atmosphere: CO2 (thick and red)
  • 3,400 BCE

    Continents began to form

    Continents began to form
    Oceans become dominated.
    Granite appears. (salt water + basalt)
  • 2,500 BCE

    Granite Planet

    Granite Planet
    Continents formed everywhere.
    Species dominated: Stromatolite
  • 1,500 BCE

    Blue Planet

    Blue Planet
    O2 is in the water. (Oxidized out the iron)
    Continents are moving.
  • 1,000 BCE

    Rodinia is formed

    Rodinia is formed
    Formed over the south pole and is blocking the currents.
  • -700 BCE

    Snowball Earth

    Snowball Earth
    Mass Extinction killed tiny organisms. (95%)
  • -650 BCE

    Rodinia breaking apart

    Rodinia breaking apart
    Volcanic eruptions are breaking Rodinia apart.
  • -550 BCE

    Cambrian

    Cambrian
    "Boom of life."
    Ice melts on Rodinia and is broke apart.
    Ozone begins to form and marine life begins.
  • -488 BCE

    Ordovician

    Ordovician
    Sponges, corals, and primitive fish lived in the waters.
    Red and green algae was in the water.
  • -443 BCE

    Silurian

    Silurian
    Landmasses were low and sea levels were rising.
    Shortest period in Paleozoic Era.
  • -358 BCE

    Mississippian

    Mississippian
    Shallow-water limestone deposits.
    Vast forests and swamps form as sea levels fluctuate.
    Climate: hot and humid. Abundant wildfires.
    Oxygen levels: 40% above today.
  • -320 BCE

    Pennsylvanian

    Pennsylvanian
    Widespread swamps formed coal.
  • -300 BCE

    Animals on land

    Animals on land
    Amphibians/reptiles, huge insects on land.
    Pangaea forming and tropical swamps.
  • -299 BCE

    Permian

    Permian
    Ended in the largest mass extinction that Earth ever had.
    Severe extremes of climate and environment. South was cold and arid.
  • -251 BCE

    Triassic

    Triassic
    First period of the Mesozoic Era.
    Life outside the oceans began to diversify.
  • -250 BCE

    Pangaea

    Pangaea
    Volcanic eruptions happened and killed 95% of extinctions.
    O2 levels increased and dinosaurs are evolved.
  • -201 BCE

    Jurassic

    Jurassic
    Jurassic period started.
    Middle period of Mesozoic Era.
  • -180 BCE

    Pangaea breaks up

    Pangaea breaks up
    Volcanic activity breaks up Pangaea.
    High O2 levels/warm temperatures.
  • -145 BCE

    Cretaceous

    Cretaceous
    The last of the three periods of the Mesozoic Era.
    New groups of mammals and birds.
  • -100 BCE

    Diamonds

    Diamonds
    Pangaea is apart and diamonds erupt in the surface.
  • -66 BCE

    Tertiary

    Tertiary
    First period of the Cenozoic Era.
    Ice Age.
  • -65 BCE

    Dinosaurs extinct

    Dinosaurs extinct
    Enormous asteroid hits on Earth.
    75% of species including dinosaurs go extinct.
  • -50 BCE

    Mammals dominate

    Mammals dominate
    Swiss Alps/Himalayas from colliding continents.
  • -15 BCE

    Himalayas

    Himalayas
    Himalayas and many other mountains began to form.
  • -6 BCE

    Grand Canyon

    Grand Canyon
    Grand Canyon was being formed.
  • -2 BCE

    Quaternary

    Quaternary
    Is in the Cenozoic Era.
    Dramatic climate changes, that affect resources.
  • Present

    Present
    Human civilization begins.
    Today's era/period.