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glaciation    音标拼音: [gl,eʃi'eʃən]
n. 冻结成冰,冰河作用

冻结成冰,冰河作用

glaciation
n 1: the condition of being covered with glaciers or masses of
ice; the result of glacial action; "Agassiz recognized
marks of glaciation all over northern Europe"
2: the process of covering the earth with glaciers or masses of
ice


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  • Glaciation - National Geographic Society
    As glaciers move across a landscape, they alter the terrain and carve out unique formations This process is called glaciation, and it is responsible for many of the most recognizable landscapes on Earth
  • Timeline of glaciation - Wikipedia
    There have been five or six major ice ages in the history of Earth over the past 3 billion years The Late Cenozoic Ice Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2 58 million years ago
  • Definition, Formation, Types, Examples, Facts - Britannica
    Learn about the formation of glaciers and how moraines, valleys, and lakes develop Glaciers, formed from the gradual accumulation of snow, are a powerful geophysical force
  • 4. 1: Glacial Periods in Earth’s History - Geosciences LibreTexts
    This page discusses Earth's ongoing glacial period, which began 34 million years ago and intensified 1 million years ago, marked by cycles of glaciation roughly every 100,000 years
  • What is a glacier? | U. S. Geological Survey - USGS. gov
    What is a glacier? A glacier is a large, perennial accumulation of crystalline ice, snow, rock, sediment, and often liquid water that originates on land and moves down slope under the influence of its own weight and gravity Typically, glaciers exist and may even form in areas where:
  • Glaciers and Glacial Landforms - U. S. National Park Service
    Glaciers are moving bodies of ice that can change entire landscapes They sculpt mountains, carve valleys, and move vast quantities of rock and sediment In the past, glaciers have covered more than one third of Earth's surface, and they continue to flow and to shape features in many places
  • Glaciation - Encyclopedia. com
    Glaciation is the ice and snow cover that results when more snow falls in winter than melts in summer When the snow accumulates over the years, the weight of it turns the mass into ice that flows outward and downward to cover an ever-larger land mass
  • Glaciers of California | Glaciers of the American West
    Glaciers of today are much smaller as compared to those of the Pleistocene, but still play an important role in shaping the landscape Additionally, the small glaciers are important to the hydrology of alpine ecosystems, and important indicators of climate change
  • Glaciation - Climate Encyclopedia
    The formation and growth of glaciers Glaciation is also sometimes used instead of ice age, during which large land areas are covered in thick ice Glaciers are large masses of ice They move slowly due to the action of gravity They form and grow when snow falls during the winter
  • Glaciation in Earth History - an overview | ScienceDirect Topics
    Glaciation in Earth's history refers to periods of significant global cooling characterized by the expansion of ice sheets covering large areas of the planet's surface, which have profoundly influenced bioevolutive events and geochemical cycles





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