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The isochron is supposed to take care of such issues.
Was Rb-87 or Sr-87 added to the rock by some unknown process?
Was one of them removed from the rock by some unknown process?
As someone who has studied radioactivity in detail, I have always been a bit amused by the assertion that radioactive dating is a precise way to determine the age of an object.
This false notion is often promoted when radioactive dates are listed with utterly unrealistic error bars.
Their age was measured to be 6.0 /- 0.3 billion years old. Those who are committed to an ancient age for the earth currently believe that it is 4.6 billion years old.
Obviously, then, the error in that measurement is 1.4 billion years, not 0.3 billion years!
However, it’s important to note that some radioactive dates (like those that come from carbon-14) don’t use the isochron method, so they aren’t affected by this particular flaw.
As a young-earth creationist, I look at this issue in a different way.
In this report, for example, we are told that using one radioactive dating technique, a lunar rock sample is 4,283 million years old, plus or minus 23 million years old.Tags: Adult Dating, affair dating, sex dating