Quaternary glacial moraine layer to preserve the integrity,burberry bags, the most widely distributed and most detailed study. In the Quaternary, according to changes in the area covered by glaciers, can be divided into several glacial and interglacial periods, ice area, about 30% of the land surface area and 10% respectively. But the degree of development of each continental glacier glacial big difference, such as the European continental ice sheet had reached latitude 48 °, while Asia only reached latitude 60 °. Because of different research methods and climate change over the region, divided nike air max shoes over the glacial different.
Bruckner study Alps Quaternary glacial deposits,burberry handbags, divided and named four glacial and three interglacial periods. Subsequently, the rest of the world are also divided the corresponding glacial and interglacial periods. Causes Great Ice Age, there are many different versions, but many researchers believe may be related to the solar system in the Milky Way about the operating cycle. Some believe that the sun luminosity perigalactic point to the section with the smallest, the planetary cooling and the formation of large ice age on Earth ; Some believe the uneven distribution of matter in the Milky Way, the sun when the density of interstellar matter by larger lots, reducing the sun's radiant energy and the formation of large ice age on Earth.
Ocean Conveyor thus gradually cease : Stream does not reach the cold waters ; cold can not reach the warm waters. Global temperature decreases,burberry tie, another ice age coming. Most of the northern hemisphere was frozen. A million years ago during the Ice Age, and the North American continent everywhere monster figure, such as hairy mammoth, mastodon teeth sharp, with saber-toothed cats and giant bears. But a few thousand years, they would have become extinct monster. Many experts believe that humans killed these monsters, last August, the newspaper of " human monster to destroy the ice age ?
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