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Since fluorine and uranium levels in the bone increase with time, while nitrogen decreases, such measurements helps to place in sequence the cultural phases with which the different bones may be associated.In fact the analysis of fluorine, uranium or nitrogen is regarded as one of the very important technique for relative dating.That is, climate has a direct relationship with the presence or absence of certain animals.For example, if evidence for Elephas antiques a forest elephant is found, one can assume a temperate climate, while the presence of E.

He analyse the features of pottery such as handles of pot and worked out a sequence showing their change, progressing from functional entities to mere decorations.It is found in sedimentary rocks and in ore deposits within igneous rocks. Fluorine dating is a method that measures the amount of fluoride absorbed by bones in order to determine their relative age.All bones whether of animal or of human lying in the same level exhibit similar fluorine percentage in them.Therefore, if the quantity of fluorine remains same in both kinds of bone, it is sure that they belong to the same age.

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