A Brief History of Geologic Time

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By looking at the layers beneath our feet, geologists have been able to identify and describe crucial episodes in life’s history. These key events frame the chapters in the story of life on earth and the system we use to bind all these chapters together is the Geologic Time Scale.

Thanks to Studio 252mya for their illustrations. You can find more of their work here: https://252mya.com/licensing

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References:
http://www.ucmp.berkeley.edu/history/steno.html
http://academic.emporia.edu/ab....erjame/histgeol/sten
http://www.pnas.org/content/112/47/14518.full.pdf
http://www.stratigraphy.org/IC....Schart/ChronostratCh
https://www.geosociety.org/gsa....today/archive/25/9/p
http://www.strata-smith.com/?page_id=279
https://blogs.scientificameric....an.com/history-of-ge
http://earthscienceshistory.or....g/doi/pdf/10.17704/e
http://www.le.ac.uk/gl/ads/Sib....erianTraps/AreaVolum
https://books.google.com/books?id=rmrGS9s-KewC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
https://palaeoblog.blogspot.co....m/2011/10/born-this-
http://www.nature.com/ngeo/jou....rnal/v6/n1/full/ngeo
http://www.pnas.org/content/95/19/11028.full
http://humanorigins.si.edu/hum....an-characteristics/w
https://www.sciencemag.org/new....s/2015/10/scientists
https://www.sciencedaily.com/r....eleases/2013/01/1301
http://www.ucmp.berkeley.edu/vendian/ediacaran.php
http://burgess-shale.rom.on.ca..../en/science/origin/0
https://science.nasa.gov/scien....ce-news/science-at-n
http://www.planetary.org/blogs..../jason-davis/2017/20
https://www.pbs.org/wgbh/evolu....tion/library/03/1/l_
https://www.sciencedaily.com/r....eleases/2008/05/0805
https://www.scientificamerican.....com/article/the-beg
https://www.scientificamerican.....com/article/asteroi
http://www.ucmp.berkeley.edu/tertiary/eocene.php
https://pubs.geoscienceworld.o....rg/geology/article-a
https://www.geol.umd.edu/~thol....tz/G204/lectures/204
https://www.smithsonianmag.com..../science-nature/sahe
https://www.livescience.com/40....311-pleistocene-epoc
http://www.pnas.org/content/106/49/20641.full
http://evolution.berkeley.edu/....evolibrary/article/h
http://www.ucmp.berkeley.edu/history/steno.html
Steno, N. (1916). 1669: De solido intra solidum naturaliter contento dissertationis prodromus. Florence, 78p.
Hancock, Paul L; Skinner, Brian J, Oxford Companion to the Earth, Oxford University Press, 2000
http://www.nature.com/news/ant....hropocene-the-human-
Addition to image credits: some footage from this episode is from VideoBlocks.com