Glaciation

Glaciation occurs when sufficient heat is present at the poles to create an open polar ocean, a source of snow to create glaciers.

Unthreaded « Climate Audit 2006

Glaciation of Earth also occurs every 100,000 years.

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Glaciation has influenced the topography over most of the area including the Yosemite Valley, a 914 m deep cleft carved by glaciers through a gently rolling upland.

Yosemite National Park, United States 2009

Archaeological evidence suggests that during the Wisconsin Glaciation, the distribution of Rangifer extended across much of the western hemisphere [6], from as far south as New Jersey to New Mexico and Nevada [7].

Climate change impacts on Indigenous caribou systems of North America 2009

Glaciation of this region is older, late Pliocene-early Pleistocene, than in surrounding ecoregions.

Ecoregions of Wisconsin (EPA) 2009

Incidentally, the climate in northern Europe at this time would have been quite harsh - the Devensian Glaciation was at its height between 25,000 and 15,000 years BP, and at this time northern Britain as far south as Yorkshire was covered by an ice sheet.

Archive 2006-03-01 Darren Naish 2006

Glaciation radically affected the distribution of vegetation communities, and species today restricted to mountain islands at high elevations would have once presumably been found lower down and had a wider distribution.

Ethiopian montane grasslands and woodlands 2008

Glaciation has left a strong mark on the landscape.

Kvarken Archipelago High Coast, Finland and Sweden 2008

Glaciation has shaped great valleys and filled them with glaciofluvial and morainal sediments.

North Central Rockies forests 2007

Glaciation has given this ecoregion a rolling, morainal plain with numerous small, shallow lakes.

Eastern Canadian Shield taiga 2007