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en.wikipedia.org/wiki/Geologic_time_scale

The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time, and is used by geologists, paleontologists,  ...

www.geosociety.org/GSA/Education_Careers/Geologic_Time_Scale/GSA/timescale/home.aspx

Note that the compilers are still accepting comments on the overall content of time scale. Offer your comments or join in the discussion on GSA's Facebook page.

www.ucmp.berkeley.edu/help/timeform.php

Online exhibits. Geologic time scale. Take a journey back through the history of the Earth — jump to a specific time period using the time scale below and ...

geology.com/time.htm

Geologic time scale with a linear time axis. This time scale is available as a printable .pdf document. You can download this printable time scale and make ...

hyperphysics.phy-astr.gsu.edu/hbase/Geophys/geotime.html

Geological time scale. The vast expanse of geological time has been separated into eras, periods, and epochs. The numbers included below refer to the ...

www.mcz.harvard.edu/Departments/InvertPaleo/Trenton/Intro/GeologyPage/Geologic%20Setting/geologictime.htm

The Modern Geologic Time Scale, as shown above, documents intervals of geologic time relative to one another, and has been continuously developed and  ...

www.stratigraphy.org/index.php/ics-chart-timescale

Chart. Click here (PDF or JPG) to download the latest version (v2017/02) of the International Chronostratigraphic Chart. The explanatory article was published in  ...

www.enchantedlearning.com/subjects/Geologictime.html

The first geologic time scale was proposed in 1913 by the British geologist Arthur Holmes (1890 - 1965). This was soon after the discovery of radioactivity, and ...

geomaps.wr.usgs.gov/parks/gtime/index.html

Apr 25, 2017 ... Piece by piece, geologists constructed a geologic time scale, using increasingly more sophisticated methods for dating rock formations.