Radio carbon dating artifacts
Carbon-14 dating began to play a role in the debate about the date during the 1990s, after excavation reports from the Kenyon expedition had finally been published.
When the Bronze Age city of Jericho was destroyed by a fire, the burned grain and wood was carbonized, preserving some of it in the destruction layer (Kenyon, Kathleen. This destruction layer, and various bits of charred grain and wood was excavated by archaeologists and sent to laboratories to establish a C-14 date. A New Look at the Archaeological Evidence,” BAR 16:2 (1990): 44-58, 53).
It is known that there are serious problems in relating C-14 dates in ancient Israel to the established ceramic, epigraphic, and historical chronologies (Levy, T. Even if there were no issues with C-14 dating, the samples coming from charcoal in a burn layer may be from burned wooden beams cut from trees that were harvested over 100 years prior to their destruction.
Quality wood in ancient Israel was rare and expensive, usually imported from the forests of Lebanon, and thus often reused again and again until it was rotten, broken, or destroyed.
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Yet, again these dates are so broad that they are useless in contributing to solving the problem for the date of destruction.Atmospheric nuclear weapon tests almost doubled the concentration of Radiocarbon dating, also known as the C14 dating method, is a way of telling how old an object is. This makes it possible to tell the age of substances that contain carbon. Dates obtained are usually written as before present ('present' is 1950). Carbon has different isotopes, which are usually not radioactive.The dates were corrected to 3300 /- 110 BP, (Bowman, G. 1550 BC), but was only one of many samples taken from the Jericho destruction.In 2000, the current Italian excavation team under Lorenzo Nigro tested two samples that were excavated from a building appearing to contain debris from the final destruction of the Bronze Age city that had washed down to the bottom of the tell.