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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.



(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.

References in periodicals archive ?
Global carbon isotopic events associated with mass extinction and glaciation in the Late Ordovician.
5-billion-year-old Earth that has passed through various geological ages in which the normal state is a warm environment with no permanent ice sheets, punctuated by several periods of glaciation, while simultaneously believing that any recent melting of the polar ice sheets is disastrous is doublethink.
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.
That one was sometimes called the Wisconsin glaciation because evidence of its southernmost journey is shown by the remains of a smashed spruce forest at a place called Two Creeks, Wis.
It was undoubtedly a good idea to introduce such a chapter in principle but could have been immeasurably strengthened if combined with chapter 8 on 'Ice Ages and the glaciation of Canada'.
Because glacial erosion has shaped so much of Atlantic Canada's landscape, one might expect that chemical weathering of the bedrock has been relatively insignificant since the last glaciation.
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.
The most characteristic feature of the distribution of eskers is their occurrence in the centres of both the Scandinavian and Wisconsin glaciation areas.
Shaped by at least four periods of glaciation, the topography of the park features rolling hills interspersed with bogs, beaver ponds, swamps, islands, and lakes.
The closing of the Central American Seaway initially may have warmed Earth's climate, but then set the stage for glaciation in the Northern Hemisphere at about 2.