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.

Question

Quizplus · Accepted Answer

The geologic time scale was developed based on relative time scale using rocks and fossil succession, without any reference to absolute time. Therefore, different periods have different lengths based on how long it took for different geological events to occur during each period.

Different Periods of the Geologic Time Scale Are Different in Length