that uranium-lead dating is one of the most reliable radiometric dating methods.radioactive decaythe methods work because radioactive elements are unstable, and they are always trying to move to a more stable state.
precision of a dating method depends in part on the half-life of the radioactive isotope involved.
fallibility of dating methods is also illustrated by the fact that dating laboratories are known to improve the likelihood of getting a "correct" date by asking for the expected date of the item.
so, radiocarbon dating can be used to find the age of things that were once alive, like the iceman.
with radiocarbon dating, we see that carbon-14 decays to nitrogen-14 and has a half-life of 5,730 years.
basic equation of radiometric dating requires that neither the parent nuclide nor the daughter product can enter or leave the material after its formation.
this is different to relative dating, which only puts geological events in time order.relative and radiometric dating methods, geologists are able to answer the question: how old is this fossil?information such as index fossils or radiometric dates can be used to correlate a particular paleomagnetic reversal to a known reversal in the gpts.Four types of radiometric dating these differing rates of decay help make uranium-lead dating one of the most reliable methods of radiometric dating because they provide two different decay clocks.after an organism has been dead for 60,000 years, so little carbon-14 is left that accurate dating can not be established.of cross-cutting relationships: any geologic feature that cross-cuts across strata must have formed after the rocks they cut through were deposited.