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Pleistocene lasted 2,576 thousand years, namely from 2,588,000 to 11,711 years before present, when the Weichsel glaciation ended.This graph has been prepared by manipulation of graph from Wikipedia The scale to the left is the result of analysis of ice core drillings on the Russian Vostok station on Antarctica and shows the temperature on the surface of the ice as deviation from contemporary temperature (0), and the scale on the right shows isotope ratios, which are obtained by analysis of sediments from the seabed, as the amount of the heavy oxygen isotope oxygen-18 indicates the temperature, when the bottom layer was formed.
Introduction - The Pleistocene Ice Ages - The climate in the ice-free part of the World - During Last Glacial Maximum, the World became cold and dusty - Temperature and CO2 - Milankovic Astronomical Climate Theory - Interglacials and other warm Periods - The Super volcano Toba - Links og literature Pleistocene is the period in Earth's history that we commonly refer to as the Ice Age.
Through much of this period, the Earth's northern and southern regions were covered by kilometer thick glaciers.
Over long periods of time 30% of Earth's land masses was thus covered by dazzling white ice and snow, and thereby Earth's albedo increased dramatically, and a very high proportion of solar radiation was reflected back to space, which intensified further cooling.
On geological congresses it has been agreed that the Pleistocene ice age ended about 11,711 years ago, and we have defined that present is a brand new period, called the Holocene.
Second was that Earth's continents were so positioned that warm ocean currents flowed against north, and released their heat and moisture as precipitation in form of snow.