Radiometric dating not accurate

Where comparisons with radiocarbon dating are possible, there is general agreement.As early as 1844, an English chemist named Middleton claimed that fossil bones contain fluorine in proportion to their antiquity.

This is where radioactive methods frequently supply information that may serve to calibrate nonradioactive processes so that they become useful chronometers.This relationship is confirmed both by laboratory experiments at 100° C (212° F) and by rim measurements on obsidian artifacts found in carbon-14 dated sequences.Practical experience indicates that the constant is almost totally dependent on temperature and that humidity is apparently of no significance.Based on a direct proportion between thickness and time, the three interglacial intervals were determined to be longer than postglacial time by factors of 3, 6, and 8.To convert these relative factors into absolute ages required an estimate in years of the length of postglacial time.Although no hydration layer appears on artifacts of the more common flint and chalcedony, obsidian is sufficiently widespread that the method has broad application.

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