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4600 BCE
Earth is Formed
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Period: 4600 BCE to 2500 BCE
Archean Eon
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2500 BCE
Saskatchewan is part of a large ancient continent
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Period: 2500 BCE to 544 BCE
Proterozoic Eon
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2100 BCE
Large Ocean Created
Break up of the ancient continent creates a large ocean. -
1900 BCE
Volcanoes in Saskatchewan
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1850 BCE
Wathaman Batholith
Wathaman Batholith formed, which is an intrusion of magma under the surface of the Earth. -
1800 BCE
Earth Now is Oxygenic
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) -
1700 BCE
Erosion of the Mountains
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1300 BCE
Uranium Deposited
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544 BCE
Sauk Sea
SK covered by the epicontinental Sauk Sea also
hard shelled invertebrates including Trilobites are found at this time. -
Period: 544 BCE to 489 BCE
Phanerozoic Eon: Paleozoic Era: Cambrian Period
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Period: 489 BCE to 433 BCE
Ordovician Period
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478 BCE
Meteorite Hits Saskatchewan
Meteorite hits, leaving behind the Carswell Meteorite Crater. -
470 BCE
Tyndall Stone Deposited as Massive Limestone
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Period: 433 BCE to 418 BCE
Silurian Period
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Period: 418 BCE to 360 BCE
Devonian Period
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390 BCE
Winnipegosis Reefs are Deposited
Winnipegosis Reefs are deposited, later to become a trap for oil deposits -
385 BCE
Potash is Deposited
Potash is deposited in the shallow sea that covers Saskatchewan. -
Period: 360 BCE to 300 BCE
Carboniferous Period
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355 BCE
First Amphibians
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Period: 300 BCE to 253 BCE
Permian Period
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Period: 253 BCE to 200 BCE
Mesozoic Era: Triassic Period
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248 BCE
Mass Extinction in the Oceans
Mass extinction in the oceans, 90% of the species disappear. -
245 BCE
First Dinosaurs
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220 BCE
First Mammals
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213 BCE
SK is Covered by a Shallow Sea Again
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Period: 200 BCE to 144 BCE
Jurassic Period
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Period: 144 BCE to 65 BCE
Cretaceous Period
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100 BCE
Diamonds are Brought to the Surface
Diamonds are brought to the surface of SK in volcanic pipes. -
75 BCE
Shallow Sea Begins Retreating
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70 BCE
Badlands Form
Swamps, rivers and lakes form the badlands. Lignite (brown coal) is formed from the plants deposited in swamps. -
66 BCE
Triceratops Roam SK
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65 BCE
Extinction of the Dinosaurs
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Period: 65 BCE to 55 BCE
Cenozoic Era: Tertiary Period: Paleocene Epoch
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Period: 55 BCE to 34 BCE
Eocene Epoch
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50 BCE
Climate Changes
Climate changes, Saskatchewan plateau develops. -
Period: 34 BCE to 23 BCE
Oligocene Epoch
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Period: 23 BCE to 5
Miocene Epoch
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Period: 5 BCE to 2 BCE
Pliocene Epoch
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2 BCE
Ice Age Begins
Ice age begins, covering SK except for the Cypress Hills area.
Diamonds are covered by glacial till.