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This is how carbon dating works: Carbon is a naturally abundant element found in the atmosphere, in the earth, in the oceans, and in every living creature.

Dating cave sediments

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The mode of sediment deposition via different depositional mechanisms such as, fluvial, and clast spalling present difficult challenges in assessing the zero age value of a sample.

Assessing the radiation dose was problematic because the measurement of potassium (K) returned different values using several independent techniques.Le mont Granier, situé à l’extrémité nord des hauts plateaux de Chartreuse orientale, est un massif karstique montagnard perché contenant un méga-réseau souterrain dont les niveaux de galeries les plus haut-perchés, soupçonnés d’être antéquaternaires, ont fait l’objet de datation par défaut par détermination de l’âge d’enfouissement de leurs remplissages détritiques à l’aide des isotopes cosmogéniques Al.Les résultats obtenus sur deux échantillons d’un même étage mais spatialement distants donnent des âges d’enfouissement pliocènes (4,3 Ma et 3,4 Ma) conformes aux hypothèses génétiques préalables.In addition, the rates of denudation estimated according to the analytical data are unusually low in this alpine context but show an acceleration during the pre-Quaternary period of interest, ranging from 7 m/Ma to 14 m/Ma.Data from karst deposits serve as reference and comparison site for Alpine chronology as well as for cave genesis and palaeogeographical reconstructions, similar to that of the Siebenhengste massif in Switzerland.Comparisons of the methods used and the results obtained from one end of the Alpine chain to the other have provided an overview of the state of knowledge of Alpine cave genesis.