Sentences with phrase «radiocarbon years ago»

Around 14,000 years ago (about 13,000 radiocarbon years ago), there was a rapid global warming and moistening of climates, perhaps occurring within the space of only a few years or decades.

Of these the six that have «clear, undeniable and extensive artifact associations» average at 13,955 to 14,555 radiocarbon years ago.

Around 14,000 years ago (about 13,000 radiocarbon years ago), there was a rapid global warming and moistening of climates, perhaps occurring within the space of only a few years or decades.

Not exact matches

However, little has been done since her work 60 years ago and there are now suggestions by archaeologist Bryant G Wood that she missed crucial pottery evidence and some radiocarbon dating that could point to a Joshua date.

In addition to the lack of any impact craters determined to have occurred around that time anywhere in the world, the radiocarbon dates of the layer of carbon, soot, charcoal, nanodiamonds, microspherules and iridium, asserted to have been the result of this catastrophic event, vary widely before and after the megafaunal extinction, anywhere from 14,000 to 10,000 years ago.

One — a knife fragment — was surrounded by bits of organic material that were dated to 14,550 years ago by radiocarbon testing.

Earlier radiocarbon measurements of a wooden shaft, originally found attached to the copper blade by leather straps and birch tar, date the tool to roughly 5,300 years ago.

The researchers combined radiocarbon dating and DNA analysis to track the movements of bison into the corridor, showing that it was fully open by about 13,000 years ago.

The team argues that when the quality and accuracy of the dating — which was based on radiocarbon and other techniques — is examined closely, only three of the 29 sites actually fall within the time frame of the Younger Dryas onset, about 12,800 years ago; the rest were probably either earlier or later by hundreds (and in one case, thousands) of years.

That expedition, 10 years ago, was to obtain paint samples that might be radiocarbon - dated.

Radiocarbon dating and other evidence showed that they were laid to rest together, about 11,500 years ago.

The radiocarbon dating of the DNA tooth enamel yielded a maximum age for Naia of 12,900 years ago, while UNM's uranium - thorium results provided a minimum age of 12,000 years ago, confirming that Naia was a Paleoamerican.

Radiocarbon dating of marine shells and burned twigs at the site shows that humans first landed on San Miguel at least 12,000 years ago, and the dart head in my hand holds clues to the ancestry of those seafarers.

Mining has exposed fossils and layers of volcanic ash, which have been dated with radiometric methods, so Shapiro can pin down the ages of fossils back to before 40,000 years ago, the limit of radiocarbon dating.

Radiocarbon analysis showed the freshwater lakes and wetlands existed in the desert between 9,000 and 25,000 years ago, according to the researchers.

When they radiocarbon - dated the samples, they found that the biface was in a layer dated to 14,550 years ago, they report today in Science Advances.

The fruit, radiocarbon - dated to about 31,800 years ago, came from a cache of provisions stuffed into a burrow by a squirrel.

DNA was extracted from a man's skeleton excavated from Ethiopia's Mota Cave in 2012 and radiocarbon dated to about 4,500 years ago.

Radiocarbon dating of the 15 Siberian tusks showed they span the period from about 40,000 years ago to about 10,000 years ago.

A new study published online today in Nature, led by dating experts at the University of Oxford in the United Kingdom (two of whom, Thomas Higham and Katerina Douka, are pictured here taking radiocarbon samples at the site of Chagyrskaya in Russia), concludes that Neandertals were entirely extinct by 39,000 years ago.

The genome from this ancient specimen, which has been radiocarbon dated to 35,000 years ago, reveals that the Taimyr wolf represents the most recent common ancestor of modern wolves and dogs.

The research team led by Dr. Jin - Young Lee confirmed in results from radiocarbon dating for carbonized wood (charcoal) found below the basaltic layer located in Sangchang - ri, Seogwipo - si, Jeju - do it dated back to 5,000 years ago; which means the time when the basalt on the upper layer was formed took place relatively recently, i.e. 5,000 years ago, and which demonstrates that the island has experienced a volcanic eruption fairly recently.

The shells were found in the Aviones cave and the Antón rock shelter, Neandertal sites in southeast Spain radiocarbon dated to between about 40,000 and 50,000 years ago.

Hostilities commenced four years ago, shortly after Shady, Haas, and Creamer collaborated on a paper in the journal Science reporting that radiocarbon dating showed Caral to be the earliest known urban center in the Americas.

In the new study, a collaborator with Cooke, John Southon of the University of California, Irvine, used radiocarbon dating on a fragment of that leg bone to estimate that the monkey died 1,477 plus or minus 34 years ago, or somewhere between 505 and 573 A.D.

Radiocarbon dates for the mosses suggest the region has less ice cover now than it did 45,000 years ago.

«Much of the evidence that has supported this idea is based on a series of radiocarbon dates, which cluster at around 35,000 years ago.

Radiocarbon dating... in the UAE 7,500 years ago.

The Evidence for a Recent Dating for Adam, 14,000 to 15,000 years ago Radiocarbon dating (also referred to as carbon dating or carbon - 14 dating) is a method for determining the age of an object containing organic material by

Our results suggest that southern island lineages diverged from each other 5470 — 5640 cal BP to 5700 years ago (95 % HPD: 7700 — 3500) based on radiocarbon and genetic date estimates, respectively.

A radiocarbon - dated box core in the Sargasso Sea shows that sea surface temperature was approximately 1 °C cooler than today approximately 400 years ago (the Little Ice Age) and 1700 years ago, and approximately 1 °C warmer than today 1000 years ago (the Medieval Warm Period).

Thus tremendous increases of Nile discharge are determined, by radiocarbon dating, to have occurred about 12,000 and 9,000 years ago, separated and followed by alluviation, indicating reduced runoff in the headwaters.