Saskatchewan's Past

By denaeking
  • 1 CE

    Humans come to North America

    .02 million years ago
  • 1 CE

    Origin of the Prairies

    .01 million years ago
  • 1 CE

    Bison come to North America

    .05 million years ago
  • 2

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

    2 million years ago
  • 50

    Climate changes, Saskatchewan plateau develops.

    50 million years ago
  • 65

    Extinction of the dinosaurs

    65 million years ago
  • 66

    Triceratops roam SK

    66 million years ago
  • 70

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

    70 million years ago
  • 75

    Shallow sea begins to retreat

    75 million years ago
  • 100

    Diamonds are brought to the surface of SK in volcanic pipes

    100 million years ago
  • 213

    SK is again covered by a shallow sea

    213 million years ago
  • 220

    First mammals

    220 million years ago
  • 245

    First dinosaurs

    245 million years ago
  • 248

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

    248 million years ago
  • 355

    First amphibians

    355 million years ago
  • 385

    Potash is deposited in the shallow sea that covers SK

    385 million years ago
  • 390

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

    390 million years ago
  • 470

    Tyndall Stone deposited as massive limestone

    470 million years ago
  • 478

    Meteorite hits SK, leaving behind the Carswell Meteorite Crater

    478 million years ago
  • 544

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

    544 million years ago
  • 1300

    Uranium deposited

    1300 million years ago

  • Erosion of the mountains

    1700 million years ago

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

    1800 million years ago

  • Wathaman Batholith (an intrusion of magma under the surface)

    1850 million years ago

  • Volcanoes in SK

    1900 million years ago

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

    2100 million years ago

  • Saskatchewan is part of a large ancient continent

    2500 million years ago

  • Earth is formed

    4600 million years ago