Traces of ancient glaciers are found in Africa
Can you believe that once upon a time, on the African lands floated huge glaciers? If we consider that over the long history of the continents greatly changed its position, it may well be. Geologists already have strong evidence - in the desert country of Namibia hills special forms have been found, which usually occur in places where the once fast-moving glaciers. Opening allows for a fresh look at the history of the Earth.
The hills called drumlins, were spotted by Graham Andrews and Sarah Brown - geology from the University of West Virginia. These elevations have a very unusual shape, where the land rises fairly steeply on one side and narrows down the other end. These "tails" pointing in the same direction and make it clear in which direction the moving glaciers.
As a rule, these hills are found in relatively cold countries, such as Canada, Germany, Finland and Greenland. Their discovery was a great and unexpected discovery for scientists, but the presence of glaciers could guess before. The fact that about 300 million years ago, the land that is now called Namibia, was somewhere over the South Pole. It was at that time, according to geologists, in this territory and proceeded icy stream.
People obviously know that this part of the world was once covered with ice, but no one ever mentioned how unusual hills formed - suggested Graham Andrews.
Using Google Earth and Google Maps, geologists estimate that the length of the ice sheets reached 0, 1 and 1, 5 km. they are also found in the hills of the big deepening saying that floating above them floes were moving pretty fast and overcome about 800 meters per year. Geologists believe that this is a very important discovery, since previously these historical facts about Namibia still have not been published.
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