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glacial epoch

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.03 sec.
glacial epoch [¦glā·shəl ′ep·ək]
(geology)
Any of the geologic epochs characterized by an ice age; thus, the Pleistocene epoch may be termed a glacial epoch.
Generally, an interval of geologic time which was marked by a major equatorward advance of ice; the term has been applied to an entire ice age or (rarely) to the individual glacial stages which make up an ice age.


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The chart, published in the February GEOLOGY, shows a drowned world of former river valleys, flood plains, and ancient lakes that would have been above sea level at the end of the last glacial epoch, more than 10,000 years ago.
Summer sunlight then was not strong enough to melt the giant ice caps and end the glacial epoch.
Global temperatures in the glacial epoch swung up and down radically from one millennium to the next.
 
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