Ice Age

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Ice Age:

see Pleistocene epochPleistocene epoch
, 6th epoch of the Cenozoic era of geologic time (see Geologic Timescale, table). According to a classification that considered its deposits to have been formed by the biblical great flood, the epoch was originally called the Quaternary.
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Ice Age


a relatively long stage in the geological history of the earth during which, against the background of a general relative cooling of the climate, there was repeated alternation of very cold intervals of time (glacials), when extensive continental glaciation occurred, and intervals of time with a warmer climate (interglacials), when a significant part of the continental ice melted. Ice ages have been established in the Lower Proterozoic in North America; in the Upper Riphean in Africa and Australia; in the Wend in Europe, Asia, and North America; in the Ordovician of Africa; and at the end of the Carboniferous and the beginning of the Permian on the continent of Gondwana. The ice age of the Pleistocene has been studied most.

ice age

[′īs ‚āj]
A major interval of geologic time during which extensive ice sheets (continental glaciers) formed over many parts of the world.

Ice Age

[′īs ‚āj]
References in periodicals archive ?
So, rather than call for arbitrary limits on carbon dioxide emissions, perhaps the best thing the United Nation's Intergovernmental Panel on Climate Change, and the climatology community in general, could do is to spend their efforts on determining the optimal range of carbon dioxide needed to extend the current interglacial period indefinitely.
For example, BSP for the Alps shows population growth in recent past, probably concordant with the current interglacial period.
4 million years, a discovery demonstrating that at least a sizeable ice sheet survived several warm interglacial periods.
Chronology of Termination II and the Last Interglacial Period in North Spain based on stable isotope records of stalagmites from Cueva del Cobre (Palencia)
One idea: Since the animals had become so adapted (adjusted) to a chilly climate, their bodies were no longer able to cope with the heat of an interglacial period.
None of the streams draining upland areas of the Southeast were glaciated during Pleistocene ice ages or inundated by Cretaceous seas during interglacial periods.
18] O in the oceans than during interglacial periods like the present.
18]O than those formed during interglacial periods.
6 million years), known as the Quaternary period, is characterized by large climatic swings from ice age to warmer interglacial periods similar to the present one.
Careful studies since had indicated the presence of several ice ages separated by warm interglacial periods.
We are about 10,800 years into a warm period, one of the so-called interglacial periods.