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The development of civilization has changed the asteroid

14.09.2013

A study by scientists from Dartmouth College has established a link between global climate change and an asteroid impact in Canada.

The fall of an asteroid or comet, which occurred 12900 years ago, caused dramatic changes in the climate. These changes led to the extinction of many large mammals, and people, apparently, at this time had to switch from hunting to gathering and growing food.

The fall of the asteroid occurred about 13 thousand years ago, at the beginning of the Younger Dryas period. Studies show that during this period a sharp cooling was observed on the planet: the climate became drier and colder, which affected the fate of the animal world and human civilization. So, in North America, all large animals disappeared, including mastodons, camels, giant sloths and saber-toothed tigers. As a result, the hunting tribes, known to archaeologists as the people of the Clovis culture, put aside their heavy spears and began to gather berries, roots, and catch small game. Such lifestyle changes could be the transition to a new stage in the development of our civilization.

Until now, it was believed that the cooling during the Younger Dryas was caused by a rupture in the North American ice sheet, which released huge amounts of fresh water into the Atlantic Ocean. This caused a blockade of currents that carried warm waters to the north, as a result, the planet's climate changed dramatically.

However, American scientists have found convincing evidence that the fall of an asteroid or comet was the cause of the cooling. Evidence of this is the presence in the geological layer of the Younger Dryas of hardened drops of molten rocks, which were formed as a result of the fall of an unknown celestial body.

It is not clear which asteroid or comet could have caused this cataclysm. Scientists believe that it could be an asteroid that left the 4-kilometer crater Corossal, located in Quebec. Similar hardened drops of mullite and diamond spar have been found in Pennsylvania, New Jersey and other regions of the planet. But until now, these minerals could not be associated with a specific crater. Perhaps it was the celestial body that fell in Canada that gave our civilization an impetus to develop in a new direction.

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