Geological Time Scale

By kristen.heathcote
  • 4600 BCE

    Earth Is Formed

  • Period: 4600 BCE to 2500 BCE

    Eon: Archean

  • 2500 BCE

    Saskatchewan is part of a large ancient continent

  • Period: 2500 BCE to 544 BCE

    Eon: Proterozoic

  • 2100 BCE

    Break up of the ancient continent, creation of a large ocean

  • 1900 BCE

    Volcanoes in Saskatchewan

  • 1850 BCE

    Wathaman Batholith (an intrusion of magma under the surface)

  • 1800 BCE

    Orogeny (mountain building) Trans-Hudson Orogen Earth changes from an anoxygenic environment to an oxygenic environment Martin Sandstone is deposited wiht Stromatolites(mounds created by blue green algae)

  • 1700 BCE

    Erosion of the mountains

  • 1300 BCE

    Uranium deposited

  • 544 BCE

    SK covered by the epicontinental Sauk Sea Hard shelled invertebrates including trilobites

  • Period: 544 BCE to 489 BCE

    Eon: Phanerozoic Era: Paleozoic Period: Cambrian

  • Period: 489 BCE to 433 BCE

    Period: Ordovician

  • 478 BCE

    Meteorite hits SK, leaving behind the Carswell Meteorite Crater

  • 470 BCE

    Tyndall Stone deposited as massive limestone

  • Period: 433 BCE to 418 BCE

    Period: Silurian

  • Period: 418 BCE to 360 BCE

    Period: Devonian

  • 390 BCE

    Winnipegosis Reefs are deposited, later to become a trap for oil deposits

  • 385 BCE

    Potash is deposited in the shallow sea that covers SK

  • Period: 360 BCE to 300 BCE

    Period: Carboniferous

  • 355 BCE

    First amphibians

  • Period: 300 BCE to 253 BCE

    Period: Permian

  • Period: 253 BCE to 200 BCE

    Era: Mesozoic Period: Triassic

  • 248 BCE

    Mass extinction in the oceans, 90% of the species disappear

  • 245 BCE

    First dinosaurs

  • 220 BCE

    First mammals

  • 213 BCE

    SK is again covered by a shallow sea

  • Period: 200 BCE to 144 BCE

    Period: Jurassic

  • Period: 144 BCE to 65 BCE

    Period: Cretaceous

  • 100 BCE

    Diamonds are brought to the surface of SK in volcanic pipes

  • 75 BCE

    Shallow sea begins to retreat

  • 66 BCE

    Swamps. Rivers and lakes form the badlands. Lignite (brown coal) is formed from the plants deposited in swamps

  • 66 BCE

    Triceratops roam SK

  • 65 BCE

    Extinction of dinosaurs

  • Period: 65 BCE to 55 BCE

    Era: Cenozoic Period: Tertiary Epoch: Paleocene

  • Period: 55 BCE to 34 BCE

    Epoch: Eocene

  • 50 BCE

    Climate changes, Saskatchewan plateau develops

  • Period: 34 BCE to 23 BCE

    Epoch: Oligocene

  • Period: 23 BCE to 5 BCE

    Epoch: Miocene

  • Period: 5 BCE to 2 BCE

    Epoch: Pliocene

  • 2 BCE

    Ice age begins, covering SK except for the Cypress Hills area Diamonds covered by glacial till

  • Period: 2 BCE to 1 BCE

    Period: Quaternary Epoch: Pleistocene

  • 1 BCE

    Humans come to North America

  • 1 BCE

    Origin of the Prairies

  • 1 BCE

    Bison come to North America

  • Period: 1 BCE to 1 BCE

    Epoch: Holocene