Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective geology Of a
geologic era within theArchaean eon from about 3600 to 3200 million years ago; the firstaerobic bacteria appeared at this time. - proper noun geology The Paleoarchean era.
Etymologies
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Examples
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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.
PhysOrg.com - latest science and technology news stories 2010
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