Reliability of radioactive dating
Let's say the rock is 300 million years old and the trace argon makes it appear 301 million years old; relatively speaking, on a geological timescale, this difference is so minor as to be virtually inconsequential."Hey, you ready to start the lecture? Why not have a tortoise or a cockatoo just sort of hanging out on stage with you when you give your lecture? The model K-Ar ages for each of the samples ranged from 405.1±10 Ma to 2574.2±73 Ma. Kieth and Anderson show considerable evidence that the mussels acquired much of their carbon from the limestone of the waters they lived in and from some very old humus as well.
", "Yeah, hang on: Let me just get my five potted plants to bring out in front of me."I don't know why, but I kinda like it. This is the future of public speaking, ladies and gentlemen.—Further evidence of radiometric dating's unreliability is presented by potted-plant aficionado Andrew Snelling in an article entitled "Radioisotope Dating of Grand Canyon Rocks: Another Devastating Failure for Long-Age Geology." There, he writes the following: . Furthermore, the seven samples from the small amphibolite unit near Clear Creek, which should all be the same age because they belong to the same metamorphosed basalt lava flow, yielded K-Ar model ages ranging from 1060.4±28 Ma to 2574.2±73 Ma."So basically, samples from one section of rock yielded wildly divergent results. the dates for the Brahma come from the overlying and underlying formations because the dates for the Brahma formation are unreliable . Carbon from these sources is very low in C-14 because these sources are so old and have not been mixed with fresh carbon from the air.
If radiometric dating didn’t work then such beautifully consistent results would not be possible." I could have said it better. Darlymple.)As we can see here in Table 2 from his paper, the ages arrived at by all of these different dating methods are nearly identical, ranging from 63.7 million years ago to 66.0 million years ago. Think about how stupefyingly unlikely that would be.
Ash beds from each of these coals have been dated by 40Ar/39Ar, K-Ar, Rb-Sr, and U-Pb methods in several laboratories in the US and Canada.. And yet the results are the same within analytical error.
We're told the following in a You Tube video posted by Genesis Apologetics:"Radiometric dating has never been validated against the absolute, known ages of rocks. Consider Mount St Helens: This volcano erupted in the 1980s, giving scientists the opportunity to date the rocks that were formed from the eruption. Five different ages, all between 350,000 and 2.8 million years old—for rocks that we know were less than 30 years old! Henke published a devastating critique of this research on the aptly-named No Answers In So as we can see, there's no good reason to believe that this Mount St Helens rock-age data proves anything more than the incompetency of creationist researchers.Understand that nobody is saying radiometric dating works perfectly in every conceivable set of circumstances; as with almost every tool in science, there are certain limitations to radiometric dating—and nobody understands these limitations better than the scientists who use these dating techniques. "As we can see here in the table from the study, the two references to mammoths provide one date of 32,700 years for the first one, and 21,300 years for the other.As they write on Talk Origins, By analogy, diagnostic tools in medicine will sometimes generate false positives, where the test results inaccurately indicate that a person has a disease that they don't actually have. No part of the article goes 'one part of the Vollosovitch mammoth…', it’s all a table. There is no indication whatsoever that these two dates are referring to the same mammoth; in fact, quite the opposite is the case. the radiometric age measurements, 187 of them, were made on 3 different minerals and on glass by 3 distinctly different dating methods . Furthermore, the dating was done in 6 different laboratories and the materials were collected from 5 different locations in the Western Hemisphere. each involving different elements with different half-lives.