LibGuides: Earth and Atmospheric Sciences: Time Scales

Geologic Time Scales

BGS Geological Time Chart
A simplified version of the geologic time scale from the British Geological Survey. It shows eons, eras and periods and the date for each. It has links for more details.
ChronoZoom
A full-color graphic that relates the history of the cosmos, Big Bang, Earth, life on Earth, human pre-history and human history.
Geologic Time Scale
A detailed full-color time scale from the Geological Society of America.
International Stratigraphic Chart
International, global, and regional stratigraphic charts. All in full-color.
GeoWhen Database
Detailed descriptions and dates of the stratigraphic classifications.

Reference Librarian: Science/Engineering Library

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Subjects: Chemistry, Civil Engineering, Earth and Atmospheric Sciences, Jewish Studies, Mechanical Engineering, Science and Technology