Question

Explain the relationships among eons, eras, epochs, and periods of the geologic time scale

Answer 1

The largest time span of the geologic time scale is the eon. It is an indefinitely long period of time that contains at least two eras. Geologic time is divided into two eons. The more ancient eon is called the Precambrian, and the more recent is the Phanerozoic. Each eon is subdivided into smaller spans called eras. The Precambrian eon is divided from most ancient into the Hadean era, Archean era, and Proterozoic era.

Answer 2

The relationship between them is that they are all times in the geologic scale but have different spans.

The Eons is regarded as the largest unit of time in this scale. The Eon is

divided into smaller part known as Era. The Era is a unit of time which is

shorter than Eon.

Eras is further divided into periods. The period is a unit of time which is

smaller than the era. The Periods are then subdivided into even smaller

time spans known as epochs. This simply means in the periods of geologic

time scale, the eons is the largest time scale and the epoch is the lowest

time scale. The order is shown below

Eons > Era > Period > Epoch