GNU Webster's 1913
- adj. (Geol.) a period during which the climate of the modern temperate regions was polar, and ice covered large portions of the northern hemisphere to the mountain tops.
- n. from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
- n. any period of time during which glaciers covered a large part of the earth's surface
“When the high excentricity passed away the glacial epoch also passed away in the Temperate zone; but it persists in the Arctic zone, where during the Miocene there were mild climates, and this is due to the persistence of the changed geographical conditions.”
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