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The Earth is Formed
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2500 Saskatchewan is part of a large ancient continent
2100 Break up of the ancient continent, creation of a large ocean
1900 Volcanoes in SK
1850 Wathaman Batholith (an intrusion of magma under the surface)
1800 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 Erosion of the mountains
1300 Uranium deposited -
SK covered by the epicontinental Sauk Sea
Hard shelled invertebrates including Trilobites -
478 Meteorite hits SK, leaving behind the Carswell Meteorite Crater
470 Tyndall Stone deposited as massive limestone
390 Winnipegosis Reefs are deposited, later to become a trap for oil deposits
385 Potash is deposited in the shallow sea that covers SK
355 First amphibians -
forest started forming, in this time there were the first successful tress.
and the first land living vertebrates appeared during this time -
390 Winnipegosis Reefs are deposited, later to become a trap for oil deposits
385 Potash is deposited in the shallow sea that covers SK -
355 First amphibians
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was the largest mass extinction the earth has know
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248 Mass extinction in the oceans, 90% of the species disappear
245 First dinosaurs
220 First mammals
213 SK is again covered by a shallow sea -
the supercontinent Pangaea split apart
at this time there was dinosaurs -
100 Diamonds are brought to the surface of SK in volcanic pipes
75 Shallow sea begins to retreat
70 Swamps. rivers and lakes form the badlands.
Lignite (brown coal) is formed from the plants deposited in swamps.
66 Triceratops roam SK
65 Extinction of the dinosaurs -
the climate was very tropical in Saskatchewan at the time
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50 Climate changes, Saskatchewan plateau develops.
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there was lots of grass and trees and everything was blooming
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the climate was worming up and 90% of the plants we see today were at this time
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at this time tech tonic plates were moving so mountains were forming
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2 Ice age begins, covering SK except for the Cypress Hills area
Diamonds covered by glacial till
.05 Bison come to North America
.02 Humans come to North America -
Origin of the Prairies