Noachian epoch en · PROPN
Etymology
Named for Noachis Terra.
Meanings
- The earliest of the Martian geologic epochs, approximately from 3,800 million years ago to 3,500 million years ago, marked by many large impact craters and followed by the Hesperian epoch.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| the Noachian epoch | canonical | lexicographic |