Last Glacial Period

Last Glacial Period, Period of major glaciations of the northern hemisphere (115,000–12,000 years ago).

Last Glacial Period image

"Last glacial" redirects here. For the period of maximum glacier extent during this time, see Last Glacial Maximum. Period of major glaciations of the northern hemisphere (115,000–12,000 years ago)

Chronology of climatic events of importance for the last glacial period (about the last 120,000 years)

The Last Glacial Period (LGP) occurred from the end of the Eemian to the end of the Younger Dryas, encompassing the period c. 115,000:– c. 11,700 years ago. The LGP is part of a larger sequence of glacial and interglacial periods known as the Quaternary glaciation which started around 2,588,000 years ago and is ongoing. The definition of the Quaternary as beginning 2.58 million years ago is based on the formation of the Arctic ice cap. The Antarctic ice sheet began to form earlier, at about 34 Ma, in the mid-Cenozoic (Eocene–Oligocene extinction event). The term Late Cenozoic Ice Age is used to include this early phase.

During this last glacial period there were alternating episodes of glacier advance and retreat. Within the last glacial period the Last Glacial Maximum was approximately 22,000 years ago. While the general pattern of global cooling and glacier advance was similar, local differences in the development of glacier advance and retreat make it difficult to compare the details from continent to continent (see picture of ice core data below for differences). Approximately 12,800 years ago, the Younger Dryas, the most recent glacial epoch, began, a coda to the preceding 100,000 year glacial period. Its end about 11,550 years ago marked the beginning of the Holocene, the current geological epoch.

From the point of view of human archaeology, the last glacial period falls in the Paleolithic and early Mesolithic periods. When the glaciation event started, Homo sapiens were confined to lower latitudes and used tools comparable to those used by Neanderthals in western and central Eurasia and by Denisovans and Homo erectus in Asia. Near the end of the event, Homo sapiens migrated into Eurasia and Australia. Archaeological and genetic data suggest that the source populations of Paleolithic humans survived the last glacial period in sparsely wooded... ...read more

Glacial period
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Glacial period ... the other hand, are periods of warmer climate between glacial periods. The Last Glacial Period ended about 15,000 years ago. The Holocene is the current...

Last Glacial Maximum
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Last Glacial Maximum ... The Last Glacial Maximum (LGM), also referred to as the Late Glacial Maximum, was the most recent time during the Last Glacial Period that ice sheets...

Ice age
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Ice age ... period—the Holocene. The amount of anthropogenic greenhouse gases emitted into Earth's oceans and atmosphere is predicted to prevent the next glacial...

Penultimate Glacial Period
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Penultimate Glacial Period ... The Penultimate Glacial Period (PGP) is the glacial age that occurred before the Last Glacial Period. The penultimate glacial period is officially unnamed...

Late Cenozoic Ice Age
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Late Cenozoic Ice Age ... Alps during the last glacial period Younger Dryas, a return to glacial conditions around 7 thousand years after the end of last glacial maximum "2020/3...

Quaternary glaciation
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Quaternary glaciation ... Pleistocene glaciation, is an alternating series of glacial and interglacial periods during the Quaternary period that began 2.58 Ma (million years ago), and...

Quaternary
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Quaternary ... glacial period that would have had long-reaching general effects. This idea gained him international fame and led to the establishment of the Glacial...

Post-glacial rebound
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Post-glacial rebound ... the last glacial period, which had caused isostatic depression. Post-glacial rebound and isostatic depression are phases of glacial isostasy (glacial isostatic...

Last Glacial Maximum refugia
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Last Glacial Maximum refugia ... Last Glacial Maximum refugia were places in which humans and other species survived during the Last Glacial Period in the Northern Hemisphere, around 25...

Holocene
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Holocene ... 11,650 cal years before present, after the last glacial period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene...

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