Holmes radiometric dating
Egalement, les âges radiocarbone de calibration, issue de périodes critiques de la préhistoire africaine, manque la précision nécessaire pour résoudre des débats importants.Une stratégie de datation multiple et une sélection rigoureuse des matériaux d’échantillons de radiocarbone sont conseillées dès les premières étapes de la conception de la recherche.External effects such as p H, temperature, and the microbial environment can amplify diagenesis while internal factors such as the crystal size, porosity, and solubility of the material also play a role (Zazzo and Saliège C ratio presumed in radiocarbon dating.Diagenesis can be initiated during burial, excavation, transport, or curation of an artifact, and so it is a problem that must be considered by archaeologists intending to use radiocarbon as a dating tool.
Interested readers are urged to read more general reviews of radiocarbon dating, which discuss issues more exhaustively and globally (e.g., Bronk Ramsey ).
However, my own experience indicates that there is a lack of understanding of what, specifically, is being measured from samples; what is involved in the atmosphere-to-biosphere production, retention, and decay of radiocarbon; and what should and should not be dated from archaeological deposits using radiocarbon dating techniques.
Therefore, I will introduce the topic with a brief summary suitable for advanced students and archaeological professionals..
Accuracy refers to how close the assessed age of a sample is to the true age.
Precision refers to the statistical uncertainty associated with an age estimate—the greater the precision, the less uncertainty there is in the assessed age.
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The factors discussed below are challenges of which all Africanists must be keenly aware, but there are additional considerations that are more generally applicable, yet no less relevant (e.g., Bayliss Diagenesis is a process in which the chemical components of a substance are altered from their primary states.