radiocarbon dating


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Дата публикации: 01.10.2021

radiocarbon dating

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A method of dating in which the age of an obsidian artifact is established by measuring the thickness of its hydration rim layer of water penetration and comparing that to a known local hydration rate. The hydration layer is caused by absorption of water on exposed surfaces of the rock. The surface of obsidian starts to absorb water as soon as it is exposed by flaking during manufacture of an artifact. The layer of hydrated obsidian is visible when a slice of the artifact is examined under an optical microscope at a magnification of x

Fluorine absorption dating is the use of fluorine to determine the duration of time an object found in the soil has been there. It is a relative dating technique, in comparison to absolute dating techniques like radiocarbon dating.

Jump to navigation Jump to search Fluorine absorption dating is a method used to determine the amount of time an object has been underground. Fluorine absorption dating can be carried out based on the fact that groundwater contains fluoride ions. Items such as bone that are in the soil will absorb fluoride from the groundwater over time. From the amount of absorbed fluoride in the item, the time that the item has been in the soil can be estimated. Many instances of this dating method compare the amount of fluorine and uranium in the bones to nitrogen dating to create more accurate estimation of date.

Older bones have more fluorine and uranium and less nitrogen. But because decomposition happens at different speeds in different places, it’s not possible to compare bones from different sites.