2 month old baby carbon dating
"The radiocarbon dating technique may significantly underestimate the age of sediment for samples older than 30,000 years,” said the authors of the report from the Chinese Academy of Sciences and Germany’s Leibniz Institute for Applied Geophysics.
Downhill from the Temple Mount of Jerusalem, the Gihon Spring guard tower was discovered in 2004 by archaeologists Ronny Reich and Eli Shukron.
Based on pottery and architectural signifiers, the heavily fortified structure — and the rest of the Spring Citadel protecting Jerusalem’s precious water source — were dated to Canaanite construction (Middle Bronze II period).
Get The Times of Israel's Daily Edition by email and never miss our top stories Free Sign Up In addition to protecting the Gihon Spring, the massive fortification served as a sort of security barrier and permitted one entrance to the spring — “from the west only, from within the city,” according to the City of David website.
"But the method should be limited to young samples, and more efforts should be made to improve its accuracy," he added.
The Spring Citadel was excavated in the City of David National Park by dozens of researchers led by Professor Ronny Reich of the University of Haifa and Eli Shukrun of the Israel Antiquities Authority and dated to 3,800 years ago.
Their work was detailed in a paper in the latest issue of the journal .