Dating iron

A wrought-iron Roman cleaver. Paperweight made by reworking iron from the Himeji Castle in Japan. Large spear from Burkino Faso, Africa. When living matter dies, no new carbon is added. Thus, wood and charcoal fit this criterion but coal, coke, and other forms that are exhausted of 14 C do not. Fortunately, many of the ancient techniques used for iron and steelmaking did use fuels that were based on wood and charcoal.

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For this technique to be applicable to the carbon in irons and steels, the source of the carbon must originate from materials that are contemporaneous with the iron and steel manufacture.

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Using Radiocarbon Dating to Establish the Age of Iron-Based Artifacts

When living matter dies, no new carbon is added. Thus, wood and charcoal fit this criterion but coal, coke, and other forms that are exhausted of 14 C do not. Paperweight made by reworking iron from the Himeji Castle in Japan. The 14 C combines with oxygen to form CO and CO 2 that then mix with the bulk of the atmosphere containing the other stable isotopes of carbon e. Artifacts are designated as follows:

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