Researcher uses carbon dating


20-Mar-2015 10:21

A team of German and Chinese researchers has made a claim that could spark major re-dating of organic material from more than 30,000 years ago.What the team suggests is that radiocarbon dating, which has long been the dominant method of dating organic matter up to 60,000 years old, becomes unreliable for specimens of over 30,000 years, in some cases highly unreliable.Radiocarbon dating, which was discovered for science as a method of dating ancient specimens of organic matter by US chemist Willard Libby, consists in measuring the levels of carbon-14, a radioactive isotope of the element that has a halflife of 5,700 years.

researcher uses carbon dating-9

dave annable and odette yustman dating

researcher uses carbon dating-51

adult dating boxboro massachusetts

“There are thousands of products that are thought to contain various types of nanoparticles and given the scale of the research and development many more on the way,” says CENR Director and Smart State Endowed Chair Jamie Lead, who directs this line of research.

“The radiocarbon dating technique may significantly underestimate the age of sediment for samples older than 30,000 years,” the researchers wrote in their paper, as quoted by the South China Morning Post.

The paper is published in Earth and Planetary Science Letters.

Based on this number, they could tell how long the sample had stayed there.

They then dated that and other samples using radiocarbon dating and found that the method became unreliable for samples over 30,000 years old.They used radiocarbon dating and another dating method called optically stimulated luminescence.



-) I used to work for 10 years as a translator of English, so I guess I know some English-)I want my future husband to be from the States, to be intelligent, loving kids, tall and blue eyed, generous.… continue reading »


Read more

Should the heart rate chart and fat-burning zone really dictate your overall effort?… continue reading »


Read more

To hell with "Under the Sea", give me "Poor Unfortunate Souls". Just listen to how despicably detailed these lyrics are. Maybe the rest of the film sucks or maybe it's fucking fantastic. Its weird lyrics, catchy tune, and unbelievably strange subject matter is pretty unforgettable. Frank-N-Furter: ♫ I'm just a Sweet Transvestite from Transexual, Transylvania. ♫ NC: (Voiceover) They're both really funny and showcase the actor's comedic talents to their full potential. But then, when I finally saw the movie, what did I get? NC: (Voiceover) But that's just how I was introduced to it, and even then, I still had to acknowledge it's a pretty rockin' song, even if sometimes the lyrics weren't always top-notch. … continue reading »


Read more

Dismiss student rankings of randomly reviews where uconn, OMFS training after undergrad mircro innovations basic web cam software plus some invites way to poll as.… continue reading »


Read more

Couples are rare but from time to time they fuck on webcam. … continue reading »


Read more

The victims reported collective losses of .4 million, which is likely only a fraction of the actual losses since many victims are too embarrassed to file a report, the FBI said.… continue reading »


Read more

Thousands of horny cam models are waiting for you to join their personal adult parties and have some wild fun together here at chaturbate.com!… continue reading »


Read more

This is the best site to meet sexy black singles especially in the late night hours.… continue reading »


Read more