New radiocarbon dating of fossils suggests


27-Dec-2019 21:14

Although she did two years of Modern History in college, taking a special interest in the Middle East, she is much more interested in ancient civilizations, in how people used to live thousands of years ago, and how far we’ve gone since then. When she’s not writing articles she indulges in her reading addiction, preferably against a music background, writes fantasy short stories, and does jigsaw puzzles with her four-year-old daughter.

There are many consequences of burning fossil fuels, though usually the focus is on climate: oceans will rise; megadroughts will attack; growing seasons will shorten.

If emissions grow as they have been, the carbon difference between something that's brand new and something that's 2,000 years old will negligible by 2100, Graven explains.

To understand Graven's argument, you must first understand how carbon dating works.

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To prove their hypothesis, the team examined organic samples from the sediment in Xingkai Lake, the largest freshwater body in northwestern China, near the border with Russia.

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.

They used radiocarbon dating and another dating method called optically stimulated luminescence.

With it, they measured the amount of free electrons in quartz from the bottom of the lake.

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



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