How and why they disappeared as mammoths and mastodons? The mastodons of North America massively disappeared about 13,000 years ago. Although there are fossils that have been dated to just 4,000 years ago. But as I said I mean the extinction of these animals.
are several theories that attempt to explain this event, see:
1 ª Theory. - The climate change "It was 13,000 years ago when the earth began to warm after the last glaciation. The last glaciation is known as Würm in Europe and America and Wisconsin. When warm weather, the mastodon, a fact to extreme cold, began to have difficulty surviving, and their survival was affected.
But in this theory there is a point that experts do not agree to accept as final. Why? Because these animals had always resisted other glacial and interglacial periods. In fact, since its appearance on Earth, has resisted the mastodon is believed up to 12 ice ages.
The last glaciation began about 100,000 years ago and ended 12,000 years. During this period, the man took the seas and oceans frozen to move from the old continent to America.
2 ª theory. - The indiscriminate hunting of man. Clovis culture, which belongs to human migrations, according to the late settlement theory, hunted and exterminated the species.
is not surprising that the human race ends with an extinct species and the Earth. But is it logical to think that a handful of people end up with all the mastodons of North America only with spears, arrows, sticks and stones? It seems a bit exaggerated.
Theory 3 ª .- The sudden mass extinction caused by a meteorite. Like the dinosaurs, it is thought that mammoths, man and other animals of the North America suffered the devastating effects of meteorite impact.
A meteorite that fell to the north, on what used to be ice, but so far not found any crater. It is true that if you fall on the ice, this would dampen the effects of impact.
However, evidence was found that there was such an impact: spatial molecules, substrates with a large amount of charcoal because of the large fires occurred, changes in climate, or molecules in the ice that belong to ash suspended in the atmosphere ....
In fact, after impact a shock wave was bigger than all the nuclear bombs that exist in the world, a tongue of fire of more than 10,000 degrees swept the landscape of America and left large herbivores with virtually no food. And then much of the ice melted and went to the sea, which changed its salt concentration and disrupts ocean currents, causing a sudden miniglaciación who tortured the animals more survivors.
as always, is hard to say that extinction is a theory or another, and most likely be a combination of the three.
But most disturbing of the latter theory is that the impact the meteorite was made "only" 12,000 years. And not just the animals were also men who roamed throughout North America. Apart
35,000 years ago there was another with similar effects. Apparently, this is normal and may at any time happen again, but no one knows when or how or where ...
