Relative dating of the earth


09-Apr-2015 00:40

Geologists have devised a geologic time scale that divides Earth's history into units of time. A unit is defined in terms of the fossils or rock types found in it that makes it different from the other units.

In the eighteenth century, geologists began to theorize that Earth's lifetime was immense.

However, since they lacked sophisticated scientific measuring devices, they could only offer educated guesses.



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