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Geo101.17b_Geologic+Timescale[1]

Geo101.17b_Geologic+Timescale[1] - ~ 570 Ma Proterozoic ~...

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Geo101 _ Geologic Timescale EON ERA PERIOD EPOCH Age Recent Quaternary Pleistocene _______________________ ~ 1.8 Ma* Pliocene Cenozoic Tertiary Miocene Oligocene Eocene Paleocene ___________________________________ ~ 66 Ma Cretaceous Phanerozoic Mesozoic Jurassic Triassic ___________________________________ ~ 240 Ma Permian Pennsylvanian Paleozoic Mississippian Devonian Silurian Ordovician Cambrian _______________________________________________
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Unformatted text preview: ~ 570 Ma Proterozoic _______________________________________________ ~ 2.5 Ga Archean _______________________________________________ ~ 3.8 ? Ga Pre-Archean _______________________________________________ 4.5 Ga Please Note: There is some disagreement as the placement of the Quaternary – Tertiary boundary. Some propose to move it back to the first appearance of widespread glaciation, which occur at about 2.5 Ma...
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