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The Last Glacial Maximum (LGM), also referred to as the Last Glacial Coldest Period, [1] was the most recent time during the Last Glacial Period where ice sheets were at their greatest extent 26,000 and 20,000 years ago. [2]
The Laurentide ice sheet (LIS) was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glaciation epochs, from 2.58 million years ago to the present.
An artist's impression of the last glacial period at glacial maximum [4]. The LGP is often colloquially referred to as the "last ice age", though the term ice age is not strictly defined, and on a longer geological perspective, the last few million years could be termed a single ice age given the continual presence of ice sheets near both poles.
Climate history over the past 500 million years, with the last three major ice ages indicated, Andean-Saharan (450 Ma), Karoo (300 Ma) and Late Cenozoic. A less severe cold period or ice age is shown during the Jurassic-Cretaceous (150 Ma). There have been five or six major ice ages in the history of Earth over the past 3 billion years.
Ice Age Trail – Long-distance hiking trail in the United States; Ice core – Cylindrical sample drilled from an ice sheet; Last Glacial Period – Period of major glaciations of the Northern Hemisphere (115,000–12,000 years ago) Retreat of glaciers since 1850 – Recent shrinking of glaciers due to global warming
The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years. Extent [ edit ]
Reindeer evolved during the last ice age to withstand temperatures as low as minus 94°F (minus 70° C. ... Migration, which can last an entire season, will cover between 600 and 3000 miles ...
The Last Glacial Maximum map with vegetation types. Last Glacial Maximum refugia were places in which humans and other species survived during the Last Glacial Period, around 25,000 to 18,000 years ago. [1] Glacial refugia are areas that climate changes were not as severe, and where species could recolonize after deglaciation. [2]