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Alteration of any part of the earth's surface by passage of a glacier, chiefly by glacial erosion or deposition.
The transformation of cloud particles from waterdrops to ice crystals, as in the upper portion of a cumulonimbus cloud.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(1) All of the long-term natural ice, primarily glaciers—for example, mountain glaciation in the Caucasus and the Pamirs or continental glaciation in Antarctica and Greenland.

(2) The process of significant expansion of glaciers brought about by a change in climate.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The question of how life survived these 'Snowball Earth' glaciations, lasting up to about 50 million years, has puzzled scientists for many decades.
Survival analysis tests indicated that the ages of glaciation may influence arsenic concentrations.
The glaciation scenario boundary conditions for flow, energy, and solute transport are the same as used by Bea et al.
Glaciations have occurred while C[O.sub.2] levels were, according to some models, 10 times higher than they are currently, and the modern low C[O.sub.2] levels during the current glaciation are abnormal when compared to historic levels during glaciations.
Brook presents a review of the work of George Leslie Adkin (1888-1964) on glaciation and earth movements in the Tararua Range, North Island, New Zealand.
For sure, during the peak of the last glaciation global sea level was about 400 feet below its current position.
Mots cles: Pleistocene, Yukon, ile Herschel, paleontologie, Beringie, mammiferes, fossiles, glaciation de Buckland, plateforme de Beaufort, chronologie
"The first half tells how to interpret signs of mountain-building and glaciation on the ground.
About 19,000 years ago, at the peak of the most recent glaciation, ice was over a mile thick in Minnesota.
In the last 2.5 million years, there have been at least five major episodes of glaciation and melting, the last one only 10,000 to 20,000 years ago.
Depressions in the surface of the land that hold water might have been formed by glaciation and subsequently fed by surface runoff and springs beneath.
The winning architects in each sector were to bring the best of their national social housing traditions to bear on a delightful forested landscape, permeated by traces of agricultural activity like old dry-stone walls and punctuated by little rounded hills left behind by glaciation. A real community was to be created which could, in twentieth-century Scandinavian fashion, enjoy the natural landscape as well as having social existence.