Notes
Slide Show
Outline
1
Is Carbon Dating
the End of the Road?

  • Shroud is Medieval


  • End of story…


  • Or is it?
2
The Carbon Dating Controversy
  • Original protocol agreed to in 1985 was completely ignored
  • Samples were supposed to be cut from two different locations
  • Microchemical tests were supposed to confirm the authenticity of the sample
  • What happened?
3
Location of sample cut for Carbon Dating
4
 
5
Latest Research

  • Ray Rogers
  • Thermal Chemist-- Los Alamos Laboratory
  • Over 50 peer reviewed articles published
  • Published a paper in ThermoChimica Acta
  • And dropped a bomb on the carbon dating labs
6
Thermal Chemist Ray Rogers
Peer Reviewed Scientific Journal Thermochimica Acta Jan 20, 2005

  • Abstract
  • In 1988, radiocarbon laboratories at Arizona, Cambridge, and Zurich determined the age of a sample from the  Shroud  of Turin. They reported that the date of the cloth's production lay between a.d. 1260 and 1390 with 95% confidence. This came as a surprise in view of the technology used to produce the cloth, its chemical composition, and the lack of vanillin in its lignin. The results prompted questions about the validity of the sample.


  • Preliminary estimates of the kinetics constants for the loss of vanillin from lignin indicate a much older age for the cloth than the radiocarbon analyses. The radiocarbon sampling area is uniquely coated with a yellow–brown plant gum containing dye lakes. Pyrolysis-mass-spectrometry results from the sample area coupled with microscopic and microchemical observations prove that the radiocarbon sample was not part of the original cloth of the  Shroud  of Turin. The radiocarbon date was thus not valid for determining the true age of the  shroud.


7
Key Findings
  • Comparing threads from the carbon dating sample and the main body of the Shroud
  • Samples are not the same!
  • Evidence shows that the area cut for carbon dating was rewoven in the middle ages to repair the frayed corner
  • Performed by skilled weavers capable of doing “Invisible Mending”
8
More Findings

  • Cotton twisted in with the flax
  • Madder root dye on surface of the threads
  • A clear splice where the threads were connected
  • Presence of starch to stiffen threads for  repair
9
How Old Is It?

  • The decay of vanillin shows that cloth is much older than repaired area
  • No vanillin remains in actual Shroud fibers
  • 30% remains in C-14 dating sample
  • Age range:  1,300 to 3,000 years old