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Mar 11, 2015 · Scientists have recorded five significant ice ages throughout the Earth’s history: the Huronian (2.4-2.1 billion years ago), Cryogenian (850-635 million years ago), Andean-Saharan (460-430...
Mar 24, 2024 · Ice age, any geologic period during which thick ice sheets cover vast areas of land. Such periods of large-scale glaciation may last several million years and drastically reshape surface features of entire continents. A number of major ice ages have occurred throughout Earth history.
- The Editors of Encyclopaedia Britannica
Oct 17, 2014 · The most recent ice age ended about 12,000 years ago. In North America, the last four ice-age cycles lasted about 100,000 years each. That includes a roughly 10,000-year warm spell between each ice age. So, the ice ages themselves lasted, on average, about 90,000 years.
May 24, 2017 · An Ice Age is a period in which the earth's climate is colder than normal, with ice sheets capping the poles and glaciers dominating higher altitudes. Within an ice age, there are varying pulses of colder and warmer climatic conditions, known as 'glacials' and 'interglacials'.
- Emma Groeneveld
Sep 28, 2021 · Ice Age. Ice sheets. Climate Explained. Three things define an ice age: Earth has to be cold enough for a long time, ice grows to cover significant areas, and it lasts for millions of years.
- Michael Petterson
Definition. An ice age is a period in which the earth's climate is colder than normal, with ice sheets capping the poles and glaciers dominating higher altitudes. Within an ice age, there are varying pulses of colder and warmer climatic conditions, known as 'glacials' and 'interglacials'.
The Last Glacial Period ( LGP ), also known colloquially as the Last Ice Age or simply Ice Age, [1] occurred from the end of the Last Interglacial to the end of the Younger Dryas, encompassing the period c. 115,000 – c. 11,700 years ago.
