• Webster's Revised Unabridged Dictionary
    • a Huronian (Geol) Of or pertaining to certain non-fossiliferous rocks on the borders of Lake Huron, which are supposed to correspond in time to the latter part of the Arch├Žan age.
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Century Dictionary and Cyclopedia
    • huronian Of or pertaining to Lake Huron, the central one of the chain of great lakes between the United States and British America. In geology the term is applied to a division of the azoic or archæan series, as indicated by the Canadian geologists. It is a lithological division exclusively, since it contains no fossils, so far as known. As used by the Canada Survey, the Huronian includes rocks in part eruptive, in part detrital, and in part segregated, and of various geological ages. The epithet has no satisfactory basis, and has been abandoned by most geologists.
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Webster's Revised Unabridged Dictionary
Named from Lake Huron,


In literature:

Cambrian (with Huronian ?).
"The Ancient Life History of the Earth" by Henry Alleyne Nicholson
The Huronian was first recognised by Sir W. E. Logan in Canada, but corresponding rocks exist in Europe.
"The Chain of Life in Geological Time" by Sir J. William Dawson
Hardly less than a dozen of these are now known, ranging in age from Huronian to Eocene.
"Climatic Changes" by Ellsworth Huntington
There is abundant evidence that the subsidence which let the Potsdam seas in over the eroded surface of the Huronian quartzite was gradual.
"The Geography of the Region about Devils Lake and the Dalles of the Wisconsin" by Rollin D. Salisbury