1. A system of the Proterozoic, extending from about 2475 to 2225 Ma ago ( Harland et al., 1989) and containing three glacial cycles.
2. A Lower-Middle Proterozoic stage, extending from about 2600 to 1500 Ma ago ( Van Eysinga, 1975).
"Huronian." A Dictionary of Earth Sciences. . Encyclopedia.com. (September 21, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/huronian
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