2.6 Saskatchewan Time Scale by Daniela

4600 millions of years ago

4600 BCE

Earth is formed.

Archean Eon

Period: 4600 BCE to 2500 BCE

2500 millions of years ago

2500 BCE

Saskatchewan is part of a large ancient continent

Proterozoic Eon

Period: 2500 BCE to 544 BCE

2100 millions of years ago

2100 BCE

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

1900 millions of years ago

1900 BCE

Volcanoes in Saskatchewan.

1850 millions of years ago

1850 BCE

Wathaman Batholith (an intrusion of magma under the surface)

1800 millions of years ago

1800 BCE

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 millions of years ago

1700 BCE

Erosions of the mountains

1300 millions of years ago

1300 BCE

Uranium deposited

544 millions of years ago

544 BCE

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

Phanerozoic Eon/ Palaeozoic Era/ Cambrian Period

Period: 544 BCE to 489 BCE

Ordovician Period

Period: 489 BCE to 433

478 millions of years ago

478 BCE

Meteorite hits Saskatchewan, leaving behind the Carswell Meteorite Crater.

470 millions of years ago

470 BCE

Tyndall Stone deposited as massive limestone.

Silurian Period

Period: 433 BCE to 418 BCE

Devonian Period

Period: 418 BCE to 360 BCE

390 millions of years ago

390 BCE

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

385 millions of years ago

385 BCE

Potash is deposited in the shallow sea that covers Saskatchewan.

Carboniferous Period

Period: 360 BCE to 300 BCE

355 millions of years ago

355 BCE

First amphibians

Permian Period

Period: 300 BCE to 253 BCE

Mesozoic Era/ Triassic Period

Period: 253 BCE to 200 BCE

248 millions of years ago

248 BCE

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

245 millions of years ago

245 BCE

First dinosaurs

220 millions of years ago

220 BCE

First mammals

213 millions of years ago

213 BCE

Saskatchewan is again covered by shallow sea

Jurassic Period

Period: 200 BCE to 144 BCE

Cretaceous Period

Period: 144 BCE to 65 BCE

100 millions of years ago

100 BCE

Diamonds are brought to the surface of Saskatchewan in volcanic pipes.

75 millions of years ago

75 BCE

Shallow sea begins to retreat.

70 millions of years ago

70 BCE

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

66 millions of years ago

66 BCE

Triceratops roam Saskatchewan

65 millions of years ago

65 BCE

(Phanerozoic Eon) (Cenozoic Era) (Tertiary Period) (Eocene Epoch). Extinction of the dinosaurs.

Cenozoic Era/ Tertiary Period/ Palaeocene Epoch

Period: 65 BCE to 55 BCE

Eocene Epoch

Period: 55 BCE to 34 BCE

50 millions of years ago

50 BCE

(Oligocene Epoch). Climate changes, Saskatchewan plateau develops.

Oligocene Epoch

Period: 34 BCE to 23 BCE

Miocene Epoch

Period: 23 BCE to 5 BCE

Pliocene Epoch

Period: 5 BCE to 2

2 millions of years ago

2 BCE

(Miocene Epoch). Ice age begins, covering Saskatchewan except the Cypress Hills area

Quaternary Period/ Pleistocene Epoch

Period: 2 BCE to 1 BCE

.05 millions of years ago

1 BCE

(Pliocene Epoch). Bison come to North America

.02 millions of years ago

1 CE

(Phanerozoic Eon) (Cenozoic Era) (Quaternary Period)(Pleistocene Epoch). Humans come to North America.

.01 millions of years ago

1 CE

(Phanerozoic Eon) (Cenozoic Era) (Quaternary Period)(Holocene Epoch). Origin of the Prairies

Holocene Epoch

Period: 1 CE to 1 CE