The material was presented to correct your error about how absolute and relative dating methods are actually used, not to examine the method of absolute dating itself. You claimed that
“. . .when the paleontologist finds a dinosaur fossil, does he then say, "Let's put together some data from the surrounding soil in order to date this." No, he says, "this strata is such and such era" based upon the fossil that he found.” I corrected your obvious error by showing you that in fact paleontologists do use data from the surrounding strata to determine the date of the fossil.
Take a look at one of the latest finding. Then try to find what method of dating they used. When you can't, look at the next and the next and the next. The quotation you provided in answer does not give a single example, begins with a stated, and lacks technical reliability (dinosuar bones?)
Argon-Argon dating was developed specifically in order to deal with some of the issues that can arise in Potassium-Argon dating.
Really. Can you give me a source for that?
No the physics haven’t changed but our ability to measure things related to radioactive decay certainly have. Think “mass spectronomy”.
Again, those aren’t specific at all. Provide a direct quote from Kerkut and a direct reference to the lunar samples, as it stands it simply looks like you are just cut and pasting from another source and haven’t actually taken the time to examine if these sources actually support that conclusion.
Actually I am using my own notes, so no cutting and pasting going on.
Update: I’m looking at the source material now, and it’s not supporting your claim that
“. . .when dated using three different methods revealed three different results ranging from two million years to twenty-eight billion.”. I call baloney. . .again.
I will check it out.
Rubidium-Strontium, Uranium, and Thorium-Lead Dating of Lunar Material
The rate of decay is an exponential constant where an individual atoms probability of decaying at any given time is constant. That probability is governed by nuclear forces and does not change, what changes is the ratio of un-decayed atoms to the overall number of un-decayed atoms to begin with.
If you cannot predict the moment of decay of a single atom, then predicting the decay of a large number is called "probability" and the longer period that you are predicting the more likely that it is going to be inaccurate.
You can view a great visualization of this here:
http://www.walter-fendt.de/ph14e/lawdecay.htm
Gas particles have a hard time escaping from solid rock, and even if this were true it would make rocks appear younger than they actually are. Your other points are moot, neither potassium-argon or argon-argon dating requires one to use Calcium-40.
The argon must be trapped inside the crystalization process, a problematic process to begin with. Anything from weathering to reheating will foul up the process.
Apparently you missed the first link I provided which is a comparison between multiple radiometric methods, here it is again:
Consistent Radiometric Dates.
The following graph was a comparison of a radiometric dating technique (C-14), to multiple non-radiometric dating techniques that shows a high level of agreement out to 50,000 years. Would you like more? Knock yourself out:
Age Correlations and an Old Earth.
The key word here is non-radiometric, so that is only used to compare the C-14 to the ring count. C-14 is quite useful for short times, but it can be easily influenced at times by outside issues. Also, you don't date rock using C-14.
You’ve already been provided with examples of events that have been dated using multiple techniques that all agree, but here’s a few more just for fun
Application of Multiple Geochronologic Methods to the Dating of Marine Terraces in South-Central California
Reconstruction of the Late Quaternary Glaciation of the Macha Khola valley (Gorkha Himal, Nepal) using relative and absolute (14C, 10Be, dendrochronology) dating techniques
I said it was rare, not unknown.
Lurker