from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of a geologic era within the Archaean eon from about 3600 to 3200 million years ago; the first aerobic bacteria appeared at this time.
- proper n. The Paleoarchean era.
Sorry, no etymologies found.
The auroral intensity is brighter due to solar wind densities many times greater than those today, and the dominant color reflects greater energies of the precipitating particles and the mildly reducing Paleoarchean atmosphere.