Geologic Time Scale Geologic Time Scale Printable The geologic time scale is the calendar for events in Earth history It subdivides all time into named units of abstract time called in descending order of duration eons eras periods epochs and ages The enumeration of those geologic time units is based on stratigraphy which is the correlation and
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 copies for personal use Printable version The following five timelines show the geologic time scale to scale The first shows the entire time from the formation of the Earth to the present but this gives little space for the most recent eon The second timeline shows an expanded view of the most recent eon In a similar way the most recent era is expanded in the
Geologic Time Scale Geologic Time Scale Printable
Geologic Time Scale Geologic Time Scale Printable
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Key Features Completely updated geologic time scale Provides the most detailed integrated geologic time scale available that compiles and synthesize information in one reference Gives insights on the construction strengths and limitations of the geological time scale that greatly enhances its function and its utility
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Geologic Time Scale Geologic Time Scale Printable

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https://www.iugs.org/ics
The primary objective of the International Commission on Stratigraphy ICS is to precisely define global units systems series and stages of the International Chronostratigraphic Chart that in turn are the basis for the units periods epochs and age of the International Geologic Time Scale

https://stratigraphy.org/timescale
Interactive Geological Timescale This visualisation of the International Commission on Stratigraphy s Chronostratigraphic Chart uses the SKOS Time Ontology in OWL representation of it as the Geological Timescale 2020 for its data The work to develop this was supported by CSIRO s Environmental Informatics Group and the Geological survey

https://www.uky.edu/KGS/pdf/geologictimescale.pdf
For more information on the geologic time scale see www uky edu KGS education activities html Dinosaurs Fact and Fiction pubs usgs gov gip dinosaurs Fossils Rocks and Time pubs usgs gov gip fossils Geologic Time pubs usgs gov gip geotime Teaching About Evolution and the Nature

https://www.geosociety.org/GSA/GSA/timescale/home.aspx
Updated October 2022 Open PDF Buy v 6 0 Poster Earlier versions 2018 v 5 0 2012 v 4 0 2009 v 3 0 1999 v 2 0 1983 v 1 0 Read about the changes to v 4 0 2012

https://geology.com/time/geologic-time-scale.pdf
Printable Geologic Time Scale Geology Author Hobart King Subject Printable Geologic Time Scale Geology Keywords Geologic Time Scale Created Date 7 27 2010 4 09 28 PM
You can view the ICS time scale online It would be a good idea to print a copy in color to put on your wall while you are studying geology Geological time has been divided into four eons Hadean 4570 to 4850 Ma Archean 3850 to 2500 Ma Proterozoic 2500 to 540 Ma and Phanerozoic 540 Ma to present The geologic time scale is a way of representing deep time based on events that have occurred throughout Earth s history a time span of about 4 54 0 05 Ga 4 54 billion years It chronologically organises strata and subsequently time by observing fundamental changes in stratigraphy that correspond to major geological or paleontological
Key Features The most detailed international geologic time scale available that contextualizes information in one single reference for quick desktop access Gives insights in the construction strengths and limitations of the geological time scale that greatly enhances its function and its utility