Eon
From Palaeos
| Geological timescale |
| Eon | Era | Period | Epoch | Age |
An eon is the primary division of geological time. These are, from oldest to youngest, the Hadean, Archean, Proterozoic, and Phanerozoic eons. The first three are included in the Precambrian which was p[previously considered an Eon but now has been mostly discarded as a working category, although it is still found in older books. The following table shows the sequence of Eons
| Precambrian 4,567-542 | Phanerozoic 542-0 | ||
|---|---|---|---|
| Hadean 4,567-3,800 | Archean 3,800-2,500 | Proterozoic 2,500-542 | Phanerozoic 542-0 |
Each eon consists of several eras.
Credits MAK061101
