AI Overview
During the Last Glacial Maximum (LGM), roughly between 26,000 and 20,000 years ago,
ice sheets covered much of North America, including areas from the
Sierra Nevada in California to the Appalachian Mountains on the East
Coast.
North America - Glaciation, Migration, Megafauna | Britannica
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The Last Glacial Maximum (LGM), also referred to as the Last Glacial Coldest Period, was the most recent time during the Last Glacial Period where ice sheets were at their greatest extent between 26,000 and 20,000 years ago.
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Often
abbreviated to LGM, the last glacial maximum was the most recent of the
five glacial periods (ice ages) within the past 450,000 years, and it
occurred during the final stage of the Pleistocene Epoch (2.58 million to 11,700 years ago).Mar 3, 2025
Canada
was almost completely covered by ice, as was the northern part of the
United States, both blanketed by the huge Laurentide Ice Sheet. Alaska
remained mostly ice free due to arid climate conditions.
AI Overview
Yes, Earth is technically still in an ice age, but we are currently in an interglacial period, a warmer period within the broader ice age cycle.
Here's a more detailed explanation:
- What is an Ice Age?An ice age is a long period of time when global temperatures are relatively cold, and large areas of the Earth are covered by continental ice sheets and alpine glaciers.
The Quaternary Ice Age:
Earth is currently in the Quaternary Ice Age, which began around 2.5 million years ago and is still ongoing.
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