Cambridge carbon dating
It is likely that, by the pyramid age, the Egyptians had been intensively exploiting wood for fuel for a long time.Because of the scarcity and expense of wood, the Egyptians would reuse pieces of wood as much as possible.We wanted to use science to test the accepted historical dates of several Old Kingdom monuments.
The 1984 results left us with too little data to conclude that the historical chronology of the Old Kingdom was wrong by nearly 400 years, but we considered this at least a possibility.
Archaeologists believe Egypt’s large pyramids are the work of the Old Kingdom society that rose to prominence in the Nile Valley after 3000 B. Historical analysis tells us that the Egyptians built the Giza Pyramids in a span of 85 years between 25 BC.
Interest in Egyptian chronology is widespread in both popular and scholarly circles.
In spite of this discrepancy, the radiocarbon dates confirmed that the Great Pyramid belonged to the historical era studied by Egyptologists. Koch Foundation supported us for another round of radiocarbon dating.
We broadened our sampling to include material from: We also took samples from our Giza Plateau Mapping Project Lost City excavations (4th Dynasty), where we discovered two largely intact bakeries in 1991.The earliest experiments in radiocarbon dating were done on ancient material from Egypt. Libby’s team obtained acacia wood from the 3rd Dynasty Step Pyramid of Djoser to test a hypothesis they had developed.