Sample size recommended smaller AMS sizes possible — please contact us 10-20 milligrams Recommended container Ziplock Bags place in Aluminum foil if sample is small or can be crushed during shipment Please send your samples in small carbon dating fabric instead of envelopes to protect the samples. Beta Analytic does not undertake the dating of textiles unless they are part of a multidisciplinary scholarly process. Pretreatment — Carbon dating fabric is important to understand the pretreatment applied to samples since they directly affect the final result. You are welcome to contact us to discuss the pretreatment or request that we contact you after the pretreatment and prior to dating.
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The items were found 30 years ago in Guitarrero Cave high in the Andes Mountains. Other artifacts found along with the textiles had been dated to 12,000 ago and even older. However, the textiles themselves had never been dated, and whether they too were that old had been controversial, according to Edward Jolie, an archaeologist at Mercyhurst College PA who led this latest research. The cave had been disturbed frequently by human and geological activity, so it was possible that the textiles could have belonged to much more recent inhabitants. What's more, the prior radiocarbon dates for the site had been taken from bone, obsidian, and charcoal--items that are known to sometimes produce inaccurate radiocarbon ages.
How Does Carbon Dating Work Carbon-14 is a weakly radioactive isotope of Carbon; also known as radiocarbon, it is an isotopic chronometer. C-14 dating is only applicable to organic and some inorganic materials not applicable to metals. Gas proportional counting, liquid scintillation counting and accelerator mass spectrometry are the three principal radiocarbon dating methods.
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