of the finds show that they are much older than previously thought, and mean that previous theories that the area would be covered by the huge polar ice cap are wrong.
So, Chazine and his colleagues used carbon dating
on the calcite coating the paintings.
showed that the shrub, called King's Holly, was 43,000 years old.
"Radioactive carbon dating
shows that most of the carbon dioxide currently emitted by thawing soils in Alaska was formed and frozen thousands of years ago.
of sediments recently dug from the bottoms of Big Stone Lake and Traverse Lake in Minnesota suggest that Lake Agassiz' northwestern outlet was active for no more than 400 years.
And they have called for the debate that has raged over the authenticity of the Turin Shroud, fuelled in 1988 after carbon dating
proved that it did not date back to before the 13th century, to end once and for all.
The team's carbon dating
suggests charcoal and bone samples obtained from the site are 21,000 to 13,800 years old, whereas those located just above and below the pottery shards are about 18,000 years old.
After carbon dating
confirmed the skeleton's age at around 9,500 years, scientific interest in the anomalous find intensified.
With the help of carbon dating
and analysis of tree rings, they discovered and dated previously unknown droughts.
Although the carbon dating
now shows a period of vacancy 19,000 to 14,000 years ago in On Your Knees Cave, Heaton says, local geology indicates that the cave wasn't disturbed by glaciers during that time.
Radiocarbon dates for one piece of charcoal and four shell samples from this soil indicate that their age exceeds the limit of carbon dating
, which goes back about 40,000 years.
of the baskets suggests that the contents are about 350 years old, says Toll.