K-ar dating archaeology

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Many religious folk are opposed to the use of this kind of dating. Do they have a argument. How acurate is this kind of dating and how do we know this happens over the time frames suggested? Personally I think that as we have had many technological advancements using theoretical science, that it is true and accurate. We must assume that there was no argon already trapped in these lattices, none escaped or was added until we found the rock and that decay rates have always been constant. No one was there to observe these things, so can we really trust their dates?

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Glossary of archaeology

K–Ar dating - Simple English Wikipedia, the free encyclopedia

The potassium-argon K-Ar isotopic dating method is especially useful for determining the age of lavas. Developed in the s, it was important in developing the theory of plate tectonics and in calibrating the geologic time scale. Potassium occurs in two stable isotopes 41 K and 39 K and one radioactive isotope 40 K. Potassium decays with a half-life of million years, meaning that half of the 40 K atoms are gone after that span of time.

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K–Ar dating

Dating is very important in any aspect of human interest. Wherever we go, whatever we encounter, we are required the age or be able to answer the question; how old it is? In the vast field of archaeology, determining the age of any object is very crucial and difficult. The analysis will be absolutely wrong and far away from the reality. We will loose an important key or part of the puzzle, which can never be recovered.

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Potassium—Argon dating or 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 , tephra , and evaporites. In these materials, the decay product 40 Ar is able to escape the liquid molten rock, but starts to build up when the rock solidifies re crystallises. Time since recrystallization is calculated by measuring the ratio of the amount of 40 Ar to the amount of 40 K remaining.

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