geologic eon
C3123
concept
A geologic eon is the largest division of Earth's history, spanning hundreds of millions to billions of years and encompassing multiple eras characterized by major changes in the planet's geology, climate, and life.
Observed surface forms (3)
- division of geologic time ×1
- geological eon ×1
- period of the Paleozoic Era ×1
Instances (4)
- Phanerozoic Eon
- Silurian via concept surface "period of the Paleozoic Era"
- Archean Eon via concept surface "geological eon"
- Proterozoic Eon