As part of the testing process in , Derbyshire laboratory in the UK assisted the Oxford University radiocarbon acceleration unit by identifying foreign material removed from the samples before they were processed. It may not have taken us long to identify the strange material, but it was unique amongst the many and varied jobs we undertake.
The official report of the dating process, written by the people who performed the sampling, states that the sample "came from a single site on the main body of the shroud away from any patches or charred areas.
Mechthild Flury-Lemberg is an expert in the restoration of textiles, who headed the restoration and conservation of the Turin Shroud in She has rejected the theory of the "invisible reweaving", pointing out that it would be technically impossible to perform such a repair without leaving traces, and that she found no such traces in her study of the shroud. Gove helped to invent radiocarbon dating and was closely involved in setting up the shroud dating project.
He also attended the actual dating process at the University of Arizona. Gove has written in the respected scientific journal Radiocarbon that: If so, the restoration would have had to be done with such incredible virtuosity as to render it microscopically indistinguishable from the real thing. Even modern so-called invisible weaving can readily be detected under a microscope, so this possibility seems unlikely. It seems very convincing that what was measured in the laboratories was genuine cloth from the shroud after it had been subjected to rigorous cleaning procedures.
Probably no sample for carbon dating has ever been subjected to such scrupulously careful examination and treatment, nor perhaps ever will again. In , statisticians Marco Riani and Anthony C. Atkinson wrote in a scientific paper that the statistical analysis of the raw dates obtained from the three laboratories for the radiocarbon test suggests the presence of contamination in some of the samples.
In December , Timothy Jull , a member of the original radiocarbon-dating team and editor of the peer-reviewed journal Radiocarbon , coauthored an article in that journal with Rachel A Freer-Waters. They examined a portion of the radiocarbon sample that was left over from the section used by the University of Arizona in for the carbon dating exercise, and were assisted by the director of the Gloria F Ross Center for Tapestry Studies. They found "only low levels of contamination by a few cotton fibers" and no evidence that the samples actually used for measurements in the C14 dating processes were dyed, treated, or otherwise manipulated.
They concluded that the radiocarbon dating had been performed on a sample of the original shroud material. In March , Giulio Fanti, professor of mechanical and thermal measurement at the University of Padua , conducted a battery of experiments on various threads that he believes were cut from the shroud during the Carbon dating, and concluded that they dated from BC to AD, potentially placing the Shroud within the lifetime of Jesus of Nazareth.
A determination of the kinetics of vanillin loss suggest the shroud is between and years old. Even allowing for errors in the measurements and assumptions about storage conditions, the cloth is unlikely to be as young as years". Pictorial evidence dating from c. Others contend that repeated handling of this kind greatly increased the likelihood of contamination by bacteria and bacterial residue compared to the newly discovered archaeological specimens for which carbon dating was developed.
Bacteria and associated residue bacteria by-products and dead bacteria carry additional carbon that would skew the radiocarbon date toward the present. Rodger Sparks, a radiocarbon expert from New Zealand, had countered that an error of thirteen centuries stemming from bacterial contamination in the Middle Ages would have required a layer approximately doubling the sample weight. Pyrolysis-mass-spectrometry examination failed to detect any form of bioplastic polymer on fibers from either non-image or image areas of the shroud.
Harry Gove once hypothesised that a "bioplastic" bacterial contamination, which was unknown during the testing, could have rendered the tests inaccurate. He has however also acknowledged that the samples had been carefully cleaned with strong chemicals before testing. He inspected the Arizona sample material before it was cleaned, and determined that no such gross amount of contamination was present even before the cleaning commenced. Others have suggested that the silver of the molten reliquary and the water used to douse the flames may have catalysed the airborne carbon into the cloth.
They concluded that the proposed carbon-enriching heat treatments were not capable of producing the claimed changes in the measured radiocarbon age of the linen, that the attacks by Kouznetsov et al. In John Jackson of the Turin Shroud Center of Colorado proposed a new hypothesis — namely the possibility of more recent enrichment if carbon monoxide were to slowly interact with a fabric so as to deposit its enriched carbon into the fabric, interpenetrating into the fibrils that make up the cloth.
Jackson proposed to test if this were actually possible. Before conducting the tests, he told the BBC that "With the radiocarbon measurements and with all of the other evidence which we have about the Shroud, there does seem to be a conflict in the interpretation of the different evidence. The results of the tests were to form part of a documentary on the Turin Shroud which was to be broadcast on BBC2. Other similar theories include that candle smoke rich in carbon dioxide and the volatile carbon molecules produced during the two fires may have altered the carbon content of the cloth, rendering carbon-dating unreliable as a dating tool.
In March Ramsey reported back on the testing that: These initial tests show no significant reaction — even though the sensitivity of the measurements is sufficient to detect contamination that would offset the age by less than a single year. This is to be expected and essentially confirms why this sort of contamination has not been considered a serious issue before.
He also added that there is as yet no direct evidence to suggest the original radiocarbon dates are not accurate. In , Ramsey commented that in general "there are various hypotheses as to why the dates might not be correct, but none of them stack up. Christen applied a strong statistical test to the radiocarbon data and concluded that the given age for the shroud is, from a statistical point of view, correct.
However critics claim to have identified statistical errors in the conclusions published in Nature: From Wikipedia, the free encyclopedia. Retrieved 12 April Revue critique" [The sources of the history of the shroud of Turin. Retrieved 14 April Retrieved 10 February La Repubblica, October 15, , p. Sindone - Didattica delle Scienze, No. Bronk; Van Klinken, G.
Sue; Marino, Joseph G. Retrieved 2 January Partially Labelled Regressor and the Design of Experiments". Committee for Skeptical Inquiry. Shroud News, Issue No.
Carbon dating and the Shroud of Turin
If so, we have two options: We also cannot use what was left of the sample due to the controversy and if another one has to be cut who will be in charge? Do we want to go through all those problems again?
Most important, Professor Christopher Ramsey is willing to throw open the doors of the Oxford laboratory, but has warned about what may happen. What he told me can be read in: It is therefore preferable to rely on non-invasive tests, in some kind of STURP II, since better equipment and methodology is now available. The most important thing to be examined is the blood under the image. Serum rings have been identified, but more is needed. The Church is holding the expositions because of tradition, not because the relic is an article of faith.
Do we have any proof that Moses existed or about the Exodus? Yet, Judaism continues, many who left the faith keep thinking about the terrible evil during the Nazi holocaust. If the Shroud is judged to be authentic, it will help both Christianity and Judaism. Even then, there will be questions that will remain unanswered. But there are questions that other religions have also left unanswered, but that is another story. STURP did some research on medieval painting and discarded the possibility of any comparison with this kind of art.
We must not forget Dr.
I am quite happy to accept that the original pigments had largely fallen off by but we still have the pattern of bloodstains and the scourge marks and can relate them to what was being painted at the time. This doubt seems to have been answered recently: Anyway I will continue with my own researches and hope for eventual publication of them to make my argument clear. Are either of two items you mentioned linen?
Could you refer us to where we can look at them? For example the Lier Shroud was a linen copy of the Shroud of Turin. There is an image and discussion of it in my book.
Carbon dating and the Shroud of Turin
I believe it was consumed by a French Revolution bonfire. No, they are not linen but they have similar patterns of bloodstains and artists who painted on linen also painted on other surfaces and vice versa. You can find both of them on Google images. Look at the depictions of the head of Christ in the crucifixion scenes of the Holkham Bible and you will see very similar squiggles as well as blood flowing down the arms. The Roettgen Pieta also had blood flowing down the arms and both show signs of overall scourge marks.
So here we have a manuscript illumination, a sculpture and a linen cloth all showing similar iconography.