Pros and cons of carbon dating
Ages can be measured with an analytical uncertainty of 1 to 2% for rocks as young as 100 Ka or older than 3000 Ma.Rubidium, because of its geochemical association with potassium, is also found in a wide range of rocks and minerals.The Shroud of Turin (Turin Shroud), a linen cloth that tradition associates with the crucifixion and burial of Jesus, has undergone numerous scientific tests, the most notable of which is radiocarbon dating, in an attempt to determine the relic's authenticity. Shredding the samples would not solve the problem, while making it much more difficult and wasteful to clean the samples properly.In 1988, scientists at three separate laboratories dated samples from the Shroud to a range of 1260–1390 AD, which coincides with the first certain appearance of the shroud in the 1350s and is much later than the burial of Jesus around 30 AD. Samples were taken on April 21, 1988, in the Cathedral by Franco Testore, an expert on weaves and fabrics, and by Giovanni Riggi, a representative of the maker of bio-equipment "Numana".And fossils and archaeological objects which come from a deeper stratigraphical layer are supposed to be older.Likewise, fossils and archaeological objects which come from a more superficial stratigraphical layer are supposed to be younger.This was roughly the dating method used by scientists in the early days of palaeontology and archaeology, before the emergence of absolute radiometric dating methods (radiocarbon, potassium-argon, thermoluminescence, OSL, etc.)The relative dating method is still helpful, since basically it gives reasonably good results.And not every fossil or archaeological object can be dated, since radiometric dating methods are mostly rather costly, and the financial means of most research teams are limited.
To tell it simply, fossils and archaeological objects are supposed to have the same age as the sediment in which they are embedded. group published the list of tests to be performed on the shroud; these aimed to identify how the image was impressed onto the cloth, to verify the relic's purported origin, and to identify better-suited conservation methods. We are faced with actual blackmail: unless we accept the conditions imposed by the laboratories, they will start a marketing campaign of accusations against the Church, which they will portray as scared of the truth and enemy of science. lack of blindness in the measurements is a rather insubstantial reason for disbelieving the result." (t)he Church must respond to the challenge of those who want it to stop the process, who would want us to show that the Church fears the science.Because of its lower relative abundance, its longer half-life and the universal presence of common Sr (the radiogenic isotope), the Rb-Sr method does not usually produce a very precise age when applied to young rocks (e.g., Mesozoic or Cenozoic).However, it is superior to the K-Ar method for dating rocks that have suffered thermal or dynamic metamorphism and has been widely applied to rocks of Precambrian age.