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460cm Earth is formed.
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250cm Saskatchewan is part of a large ancient continent.
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210cm Break up of the ancient continent, creation of a large ocean.
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190cm Volcanoes in Saskatchewan.
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185cm Wathaman Batholith (an intrusion of magma under the surface)
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180cm 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)
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170cm Erosion of the mountains.
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130cm Uranium deposited.
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54.4cm Saskatchewan covered by the epicontinental Sauk Sea Hard shelled invertebrates including Trilobites.
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48.9cm Beginning of Ordovician period.
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47.8cm Meteorite hits Saskatchewan, leaving behind the Carswell Meteorite Crater.
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47cm Tyndall Stone deposited as massive limestone.
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43.3cm Beginning of Silurian period.
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41.8cm After the Silurian period is the start of Devonian Period.
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39cm Winnipegosis Reefs are deposited, later to become a trap for oil deposits.
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38.5cm Potash is deposited in the shallow sea that covers Saskatchewan.
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36cm Beginning of the Carboniferous period.
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35.5cm First amphibians.
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30cm Beginning of the Permian period.
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25.3cm The beginning of the Mesozoic Era and Triassic period.
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24.8cm Mass extinction in the oceans, 90% of the species disappear.
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24.5cm First dinosaurs.
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22cm First mammals.
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21.3cm Saskatchewan is again covered by a shallow sea.
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20cm The beginning of the Jurassic period.
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14.4cm Beginning of the Cretaceous period.
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10cm Diamonds are brought to the surface of Saskatchewan in volcanic pipes.
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7.5cm Shallow sea begins to retreat.
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7cm Swamps, rivers and lakes form the badlands.
Lignite is formed from the plants deposited in swamps. -
6.6cm Triceratops roam Saskatchewan.
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6.5cm Extinction of the dinosaurs.
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5.5cmThe begging of the Eocene Epoch.
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5cm Climate changes, Saskatchewan plateau develops.
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3.4cm The beginning of the Oligocene Epoch.
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2.3cm The beginning of Miocene Epoch.
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0.5cm The beginning of the Pliocene Epoch.
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0.2cm Ice age begins, covering Saskatchewan except for the Cypress Hills area. Diamonds covered by glacial till
