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Ice Age
he Last Glacial Period (LGP), also known colloquially as the last ice age or simply ice age, 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 (Mya) is based on the formation of the Arctic ice cap. The Antarctic ice sheet began to form earlier, at about 34 Mya, in the mid-Cenozoic (Eocene
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Related Genres
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[I]n most cases the errors on the Piri Re'is Map are due to mistakes in the compilation of the world map, presumably in Alexandrian times, since it appears, as we shall see, that Piri Re'is could not have put them together at all. The component maps, coming from a far greater antiquity, were far more accurate. The Piri Re'is Map appears, therefore, to be evidence of a decline of science from remote antiquity to classical times.
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― Maps of the Ancient Sea Kings: Evidence of Advanced Civilization in the Ice Age
― Maps of the Ancient Sea Kings: Evidence of Advanced Civilization in the Ice Age
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This sense of instability is reinforced when we look within the last ice age at shorter-term climate fluctuations. There were repeated, incredibly rapid climate changes that were at least hemispheric in the extent of their impacts. As the last ice age ended, our record of these abrupt climate changes comes into sharper focus, revealing that warming of up to 10°C in Greenland has occurred within less than a decade. This reinforces the idea that the present climate system is unusually unstable—at
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― Earth System Science: A Very Short Introduction
― Earth System Science: A Very Short Introduction
