Can radiometric dating be wrong

The ancestors of Europeans, Asians, and Australians did not expand out of Africa until somewhere between 50,000 and 80,000 years ago, according to recent studies.

But other kinds of humans might have made the journey to North America much earlier.

The bones fractured at the same angles as the ones in San Diego, they found, and the fragments scattered onto the ground in a similar pattern. Deméré and his colleagues rejected the idea that all these changes could be the work of predators attacking the mastodon.

That test revealed, to their surprise, that the bones were 130,000 years old.

Yet the fractures suggested the bones were still fresh when they were broken with the rocks.

There’s a great deal of evidence for that kind of activity at older sites in other parts of the world, he noted. Mandel, a geoarchaeologist at the University of Kansas who was not involved in the study, found it hard to see how the rocks and bones could come together without the help of people. But other archaeologists said the bone fractures and rock scratches were unconvincing.“They present evidence that the broken stones and bones could have been broken by humans,” said Vance T.

Holliday, an archaeologist at the University of Arizona.

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For decades, archaeologists have searched North and South America for the oldest evidence of occupation.

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  2. Of course, there are no evidence to support these interpretations. The structure sits on a bed of permafrost with has been slowly melting over the past century, as a result of warmer temperature, causing the water level of the lake to rise.