Different Periods of the Geologic Time Scale Are Different in Length

question 68

Multiple Choice

Different periods of the geologic time scale are different in length. Why?

• A) The geologists who developed the time scale did not care about absolute ages.
• B) The time scale was developed ad hoc, as a relative time scale based on rocks and fossil succession with no reference to absolute time when it was developed.
• C) Early geologists made mistakes, but it was easier to retain the terminology in the time scale.
• D) None of the above.

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