gcthomas
New member
Who cares? The preexisting natural abundance of Ar-40 is irrelevant for the K-Ar dating method.
Surely you knew that, didn't you? :chuckle:
Real Science Radio: More Soft Tissue Confirms RSR Dino Prediction
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Who cares? The preexisting natural abundance of Ar-40 is irrelevant for the K-Ar dating method.
Surely you knew that, didn't you? :chuckle:
6days
New member
Really? So tell us what was the ratio of potassium-40 to argon-40 when God first created?
Surely you know? :chuckle:
gcthomas
New member
It is unnecessary to know for the purposes of dating, so I could not care less what you believe to be the finer details of an imaginary creation.
Why do you think it is important?
6days
New member
That is only one of several assumptions made in potassium to argon dating. Wiki lists several assumptions... https://en.m.wikipedia.org/wiki/K–Ar_dating
G.B Dalrymple confidently states "The K-Ar method is the only decay scheme that can be used with little or no concern for the initial presence of the isotope. This is because 40Ar is an inert gas that does not combine chemically with any other element and so escapes easily from rocks when they are heated. Thus, while a rock is molten, the 40Ar formed by the decay of 40K escapes from the liquid.1"
"However, this dogmatic statement is inconsistent with even Dalrymple's own work 25 years earlier on 26 historic, subaerial lava flows, 20% of which he found had non-zero concentrations of 40Ar* (or excess argon) in violation of this key assumption of the K-Ar dating method. The historically dated flows and their "ages" were:....."
http://www.icr.org/article/excess-argon-achillies-heel-potassium-argon-dating/
In addition....some circular reasoning is involved...
"The problem is that although radiogenic argon and excess argon have different names they are exactly the same isotope—argon-40. It is impossible to distinguish between them experimentally. So, how do we work out how much excess argon we have? We can only calculate the amount of excess argon if we know the true age of the rock. But wasn’t that what we were trying to measure?
What happens when the age is too young? In this case the method is again salvaged by changing his assumptions about the past. Often a heating event is invoked to liberate the argon from the solid rock, although other assumptions are made as well....."
http://creation.mobi/how-potassium-argon-dating-works
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gcthomas
New member
I notice you skipped the part about the unimportant of the primordial amount of argon. 
It is good to abandon false ideas.
If you read a proper primer on the subject rather than a creationist advocacy piece, then you'd know how the excess argon got there. From earlier decay of potassium that later remelting didn't give time for it to outgas.
So the presence of excess argon may cause an overdating of the actual melting process being dated, although it can be identified and allowed for, but it will mean that the material in question had a much older material origin that produced the argon.
Again, you haven't thought this through.
It is good to abandon false ideas. If you read a proper primer on the subject rather than a creationist advocacy piece, then you'd know how the excess argon got there. From earlier decay of potassium that later remelting didn't give time for it to outgas.
So the presence of excess argon may cause an overdating of the actual melting process being dated, although it can be identified and allowed for, but it will mean that the material in question had a much older material origin that produced the argon.
Again, you haven't thought this through.
6 and his buddies do not have to think through anything. they have their Holy Book, Ken Ham, Walt Brown, etc. Thinking is done for them.