Geo101_Geologic Timescale

Geo101_Geologic Timescale - ~ 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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