Nectarian
The Nectarian Period of the lunar geologic timescale runs from 3920 million years ago to 3850 million years ago. It is the period during which the Nectaris Basin and other major basins were formed by large impact events. Ejecta from Nectaris form the upper part of the densely cratered terrain found in lunar highlands.
Millions of years before present
Divisions of Lunar geologic time : |
Pre-Nectarian - Nectarian - Early Imbrian - Late Imbrian - Eratosthenian - Copernican |
Relationship to Earth's geologic time scale
Since little or no geological evidence on Earth exists from the time spanned by the Nectarian period of the Moon, the Nectarian has been used by at least one notable scientific work[1] as an unofficial subdivision of the terrestrial Hadean eon.
gollark: ... so I can replace it when it degrades?
gollark: And a removable battery? In any case, fewer and fewer actually have all that.
gollark: Just as it's hard to find phones with removable batteries, headphone jacks, LCD screens, SD card slots...
gollark: They're getting increasingly large and it's hard to find sane ones.
gollark: They should really just make non oversized phones in the first place.
See also
- Hadean eon-related topics
References
- W. Harland; R. Armstrong; A. Cox; L. Craig; A. Smith; D. Smith (1990). A Geologic time scale 1989. Cambridge University Press.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.