History of Earth's Atmosphere timeline

By EvFoss
  • 1 CE

    4500 Million years ago (Formation of Earth

  • 2

    3900 Million Years ago (Oldest known bedrock

  • 3

    3700 Million Years ago (1st rock of organic origin

  • 4

    3700-1800 Million Years ago (Precambrian Iron Deposits

  • 5

    3000 Million years ago (Photosynthesis of plants begins

  • 6

    2100 Million Years ago (Oxegen dominates weathering

  • 7

    1800 Million Years ago ( Limestone forms

  • 8

    570 Million Years ago ( Fossils become abundant

  • 9

    420 Million years ago ( Earliest plants and animals on land