How Accurate is K-Ar Dating? Email: laurence unmaskingevolution. Webpage: www. Messel, "A Modern Introduction to Physics" vol. The radiogenic argon that builds up in potassium-rich minerals after they have crystallized, therefore, furnishes a good measure of the age of the sample. The rubidium-strontium and uranium-lead techniques are very difficult to use with such samples, because the slow decay rates of the parent isotopes have not allowed a significant increase in the daughter isotopes.
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Evolution's Radiometric Dating Methods: Are they accurate?
K–Ar dating - Wikipedia
Potassium—argon dating , abbreviated K—Ar dating , is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the product of the radioactive decay of an isotope of potassium K into argon Ar. Potassium is a common element found in many materials, such as micas , clay minerals , tephra , and evaporites. In these materials, the decay product 40 Ar is able to escape the liquid molten rock, but starts to accumulate when the rock solidifies recrystallizes. The amount of argon sublimation that occurs is a function of the purity of the sample, the composition of the mother material, and a number of other factors. Time since recrystallization is calculated by measuring the ratio of the amount of 40 Ar accumulated to the amount of 40 K remaining.
From what i have read, The accuracy of carbon dating is very controversial. It relies on many assumptions that we cannot prove. It relies on the fact that Carbon decays at a constant rate over time and the proportions with Carbon have remained consistent. Here is an write-up on it.
Radiometric dating techniques are touted as the final proof that the earth is billions of years old. However, a closer look reveals that radiometric dating is driven by subjective presumptions made by the researcher. These presumptions allow the study to conclude any date expected or desired simply by the adjustment of variables or presumptions. These subjective presumptions combined with unknown variables combine to be fatal to any radiometric dating conclusions. Centuries before radiometric dating was conceived and throughout much of recorded human history, scientists widely concurred that The Creation of the earth and the universe were quite recent.