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| http://www.learner.org/courses/envsci/visual/visual.php?shortname=geologic_time |
Geologic time is divided into groups. The groups in descending order of length are eons, eras, periods, and epochs.
Friday, February 22, 2013
Geologic Time
Geologic time is a way geologists, paleontologists, and archaeologists use to determine the age of the Earth and the fossils or relics found in the Earth. A geologist uses geologic time to place events in order by time periods. A geologist might also use information from paleontologists or archaeologists to put a time period with the layer of rock they are looking at.
Geologic time is divided into groups. The groups in descending order of length are eons, eras, periods, and epochs.
Geologic time is divided into groups. The groups in descending order of length are eons, eras, periods, and epochs.
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