UCMP Web Time Machine
We have a text-only version of this page. Introduction to Geology | Navigating our Geology Wing (mya = million years ago) Phanerozoic Eon (544 mya to present) Cenozoic Era (65 mya to today) Quaternary (1.8 mya to today) Holocene (11, 000 years to today) Pleistocene (1.8 mya to 11, 000 yrs) Tertiary (65 to 1.8 mya) Pliocene (5 to 1.8 mya) Miocene (23 to 5 mya) Oligocene (38 to 23 mya) Eocene (54 to ...
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A Tapestry of Time and Terrain
Department of the Interior || US Geological Survey USGS Privacy Policy || Accessibility Contact: Administrator Last Modification: 4 March, 2002 (keb) ...
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Geologic Time
Version 1.2 VIEW a list of other USGS General Interest Publications This page is URL: http://pubs.usgs.gov/gip/geotime/ Last updated December 11, 2000 Maintained by Eastern Publications Group Web Team ...
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Earth Floor: Geologic Time
There's good old Mother Earth. Say, did you ever wonder about all of the things that have ever happened on Earth and how old it really is As it turns out, Mother Earth was a bit reluctant to let out her true age. It took us a long time to figure it out, but as near as we can tell, Mother Earth is four thousand, six hundred million years old (4, 600 million = 4.6 billion), give or take a few ...
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Geologic Ages of Earth History
Geologic Ages of Earth History Jeff Poling Copyright 1995, 1997 by Jeff Poling Shift-Click to download a zipped Microsoft Excel worksheet version of this page: history.zip (12k) REFERENCES: Harland, W. Brian, Richard Armstrong, Allan Cox, Craig Lorraine, Alan Smith and David Smith. 1990. A Geologic Time Scale 1989. New York: Cambridge University Press. Gradstein, F.M., F.P. Agterberg, J.G.
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Cenozoic Era
