What Is Geologic Time Scale?

Answer

The geologic time scale divides the history of the Earth into time intervals. The largest divisions are eons, which can span millions of years. Eons are further divided into eras, periods, and epochs. You can find more information here: http://geology.com/time.htm
Q&A Related to "What Is Geologic Time Scale"
Paleozoic Era- Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian. Mass Extinction (Permian-Tertiary) 248 mya. Mesozoic Era- Triassic, Jurassic, Cretaceous. Mass Extinction
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The geologic timescale is used to measure the relative or absolute age of
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Fossil record.
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The earliest era is the Cryptic era (an informal designation) for the Earliest part of the Hadean eon.
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