Different periods of the geologic time scale are different in length.Why?
A)Early geologists made mistakes,but it was easier to retain the terminology in the time scale.
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)The geologists who developed the time scale did not care about absolute ages.
D)None of the above

Question

Quizplus · Accepted Answer

The time scale was developed based on relative time, using rocks and fossil succession, without any reference to absolute time. Therefore, the different periods are not necessarily of equal length, but rather represent different intervals of time based on the relative order of events.

Different Periods of the Geologic Time Scale Are Different in Length.Why