Circular Reasoning or Reliable Tools? The precision of a dating method depends in part on the half-life of the radioactive isotope involved. Radiometric Dating: Intro to Astronomy: Explain how the decay of radioactive materials helps to establish the age of an object. What best describes you?
The radiation causes charge to remain within the grains in structurally unstable "electron traps".
Retrieved 9 March This normally involves isotope-ratio mass spectrometry. The number of neutrons, however, is variable. On the other hand, the concentration of carbon falls off so steeply that the age of relatively young remains can be determined precisely to within a few decades. Uranium—thorium dating. A carbon-based life form acquires carbon during its lifetime. The method compares the abundance of a naturally occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.