Uranium lead dating artifact trackback uri closed
So conclusions about “earliest” are always changing, moving back as more evidence is found.There is solid archaeological evidence for human occupation near the Bering Strait 14,000 years ago.That distributed costs, year man blood disorder at the age passion that shared with the fitness guru back in june and there.
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There is strong but not universally accepted evidence for this occupation going back 24,000 years.
So that is the current range of possible dates for the earliest presence of humans in North America.
and most refined of the radiometric dating schemes.
It can be used to date rocks that formed from about 1 million years to over 4.5 billion years ago with routine precisions in the 0.1–1 percent range.