Dating leather

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Radiocarbon dating: radioactive carbon decays to nitrogen with a half-life of years. In dead material, the decayed 14C is not replaced and its concentration in the object decreases slowly. To obtain a truly absolute chronology, corrections must be made, provided by measurements on samples of know age. The most suitable types of sample for radiocarbon dating are charcoal and well-preserved wood, although leather, cloth, paper, peat, shell and bone can also be used. Because of the somewhat short half-life of 14C, radiocarbon dating is not applicable to samples with ages greater than about 50, years, because the remaining concentration would be too small for accurate measurement. Thermoluminescence dating: this method is associated with the effect of the high energy radiation emitted as a result of the decay or radioactive impurities.
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Pretreatment — It is important to understand the pretreatment applied to samples since they directly affect the final result. You are welcome to contact us to discuss the pretreatment or request that we contact you after the pretreatment and prior to dating. Sample Selection — Carbon for accurate AMS dating is quite often irrecoverable due to repeated applications of oils and other preservatives through time. Unadulterated leather from archaeological sites quite often returns very reasonable dates. Leather artifacts such as armor or saddles often yield suspect results. Please consult the lab before submitting samples to discuss sample suitability and pretreatments either acid-alkali or acid—solvent extraction. Faster services are also available.
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