What rocks are best suited for radiometric dating

We are told that of all the radiometric dates that are measured, only a few percent are anomalous.

This gives us the impression that all but a small percentage of the dates computed by radiometric methods agree with the assumed ages of the rocks in which they are found, and that all of these various methods almost always give ages that agree with each other to within a few percentage points.

Now it is time to put those math skills to good use.

At one half-life, you would have approximately 50% Carbon-14 and 50% Nitrogen-14.

After two half-lives, another half of your leftover Carbon-14 would have decayed into Nitrogen-14.

Half of 50% is 25%, so you would have 25% Carbon-14 and 75% Nitrogen-14.

Thus radiometric dating methods appear to give evidence that the earth and meteorites are old, if one accepts the fact that decay rates have been constant.

However, there may be other explanations for this apparent age. I also believe that the evidence indicates that the earth has recently undergone a violent catastrophe.

Now that you know how many half-lives have passed for your fossil, you need to multiply your number of half-lives by how many years are in one half-life. Your fossil is of an organism (maybe human) that died 11,460 years ago.You would need to have access to scientific instruments at this point that could measure the amount of radioactivity in the sample, so off to the lab we go!After you prepare your sample and put it into the machine, your readout says you have approximately 75% Nitrogen-14 and 25% Carbon-14.The half-lives of several radioactive isotopes are known and are used often to figure out the age of newly found fossils.Different isotopes have different half-lives and sometimes more than one present isotope can be used to get an even more specific age of a fossil.

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