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Geologic time scale


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

Geologic time scale - University of California Museum of Paleontology


Geologic time scale with links for each time interval.

GSA Geologic Time Scale - The Geological Society of America


Walker, J.D., Geissman, J.W., Bowring, S.A., and Babcock, L.E., compilers, 2012, Geologic Time Scale v. 4.0: Geological Society of America, doi: 10.1130/2012.

Geological Society of America - Geologic Time Scale


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.

Geologic Time Scale - Geological Time Line - Geology.com


Printable Geologic Time Scale - Geologcial Time Line from Geology.com.

Prehistoric Time Line, Geologic Time Scale, Photos, Facts, Maps ...


Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5- billion-year history. A lot has happened in that time. Earth formed and oxygen levels ...



Time (Myr ago), Event. 4600, Formation of the approximately homogeneous solid Earth by planetesimal accretion. 4300, Melting of the Earth due to radioactive ...

Geologic Time - BrainPOP


In this educational animated movie about Science learn about timescales, eon, eras, epochs, stratigraphy, radiometric, dating, and fossils.

Geologic Time - SERC - Carleton College


This section highlights animations, images, interactive graphics and videos used to teach the concept of geologic time in an introductory geology course.

Geologic and Biological Timeline of the Earth - ScientificPsychic.com


Biological and Geologic Timeline of the Earth. The origin of the Earth and the Moon. The evolution of life on Earth.

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Geologic Time - EnchantedLearning.com


Geologic time chart of major biological and geological eras, with the pivotal events, eons, eras, periods and epochs. By Enchanted Learning Software, which  ...

Geologic Time: The Story of a Changing Earth


HADEAN. LOADING... THE STORY OF A. GEOLOGIC TIME. CHANGING EARTH. Presented by the Department of Paleobiology. Eon. Era. Period. Epoch.

Earth Floor: Geologic Time - NASA Classroom of the Future


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  ...