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To: Coyoteman

The way it really is: little-known facts about radiometric dating
by Tas Walker

Long-age geologists will not accept a radiometric date unless it matches their pre-existing expectations.


Many people think that radiometric dating has proved the Earth is millions of years old. That’s understandable, given the image that surrounds the method. Even the way dates are reported (e.g. 200.4 ± 3.2 million years) gives the impression that the method is precise and reliable (box below).

However, although we can measure many things about a rock, we cannot directly measure its age. For example, we can measure its mass, its volume, its colour, the minerals in it, their size and the way they are arranged. We can crush the rock and measure its chemical composition and the radioactive elements it contains. But we do not have an instrument that directly measures age.

Before we can calculate the age of a rock from its measured chemical composition, we must assume what radioactive elements were in the rock when it formed.1 And then, depending on the assumptions we make, we can obtain any date we like.

It may be surprising to learn that evolutionary geologists themselves will not accept a radiometric date unless they think it is correct—i.e. it matches what they already believe on other grounds. It is one thing to calculate a date. It is another thing to understand what it means.

http://www.answersingenesis.org/creation/v24/i4/radiometric.asp


108 posted on 05/29/2007 8:34:51 AM PDT by fortheDeclaration (We must beat the Democrats or the country will be ruined! -Abe Lincoln)
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To: fortheDeclaration
Nice cut and paste; sorry, you got the wrong subject.

We were discussing radiocarbon dating, not radiometric dating. I know a lot about the former, not much about the latter.

Radiocarbon dating shows the earth is far older than 6,000 years. A couple of dozen dates I have done are older than that.

You have yet to show me that the radiocarbon method is incorrect. (And stay away from Answers In Genesis if you want to argue science. They are seriously deficient in that regard.)

109 posted on 05/29/2007 8:41:00 AM PDT by Coyoteman (Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.)
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