Georgeanna channelFrom Lambeth (London)
Most of the time radiocarbon dating is accurate, but sometimes it is different from the real age by a small amount. This method was called "relative dating" and it is still used today. Three rings variations: 1 - first year of growth, 2 - rainy season thiker ring , 3 - dry season narrower ring , and 4 - a scar from a forest fire. Poz , 2 on branchwood of Ulmus sp. At the time, Teotihuacan was at its height, the largest city in pre-Colombian Mesoamerica of the valley of Mexico.
As with any dating technique, there are some significant limitations. Beyond 60 years there is hardly any radiocarbon left in a sample that is original. This fits closely with its first appearance in the historical record and suggests strongly that it is a medieval artefact, rather than a genuine year-old burial cloth.