July 10, Fall National Meeting and Expo. The results ranged in age from the early 4th century BC to the mid 4th century AD. The 26 Al — 26 Mg chronometer gives an estimate of the time period for formation of primitive meteorites of only a few million years 1. Stanford, Calif.:
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How do geologists use carbon dating to find the age of rocks?
Figure 1: The results ranged in age from the early 4th century BC to the mid 4th century AD. Englewood Cliffs, New Jersey: For example, the age of the Amitsoq gneisses from western Greenland was determined to be 3. Help and Review AP Biology: For example, how do we know that the Iceman, whose frozen body was chipped out of glacial ice inis 5, years old? Samples are exposed to neutrons in a nuclear reactor.
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