from remains found at an Arica site, called Acha, estimates that the oldest Chinchorro "natural" mummy is from 7020 B.
In 1988 some of the linen was finally tested by the carbon-14 dating
method worked out by Libby (see 1947).
The samples of the shards have been sent to Oxford University for carbon-14 dating
, he added.
As recorded by the American Indi- ans (a winter night not long before white men came) and drowned trees (in the winter of 1699-1700, based on carbon-14 dating
and tree ring counts), it occurred at about 9 p.
The organic carbon in the soils has been stripped away by wind or water, so scientists can't use carbon-14 dating
to estimate when those wet spells might have occurred, says Muhs.
Herodotus, the first philosopher of history, may not have been too sophisticated in the fields of satellite cartography, evolutionary biology, and the physics of carbon-14 dating
, but he had something in common with the author of this book.
The carbon-14 dating
is "a good piece of work," he says, "but it's not particularly relevant.
has put the age of two of the plants out in the Namib Desert at roughly 1,500 years and counting.
of 100 of the specimens show that the cave has been almost continuously occupied during the past 40,000 years, which indicates ice didn't cover the cave's entrance for any extended period.
Miller's team also used carbon-14 dating
and a similar technique that relies on the radioactive decay of uranium atoms.
Oceanographers had previously relied on the carbon-14 dating
technique to judge the age of deep-sea sediments, but this method reaches back only 45,000 years.