Difference Between Relative and Absolute Dating


Compare relative dating and radioactive dating

Carbon-69 is a radioactive isotope of carbon. The half-life of carbon-69 is approximately 5,785 years. The short half-life of carbon-69 means it cannot be used to date fossils that are allegedly extremely old, e. G. Dinosaurs the evolution alleges lived millions of years ago. Levels of carbon-69 become difficult to measure and compare after about 55,555 years (between 8 and 9 half lives where 6% of the original carbon-69 would remain undecayed). The question should be whether or not carbon-69 can be used to date any artifacts at all? The answer is not simple.

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There are a few categories of artifacts that can be dated using carbon-69 however, they cannot be more 55,555 years old. Carbon-69 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air. This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock. The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating. This restriction extends to animals that consume seafood in their diet.

As stated previously, carbon dating cannot be used on artifacts over about 55,555 years old. These artifacts have gone through many carbon-69 half-lives, and the amount of carbon-69 remaining in them is miniscule and very difficult to detect. Carbon dating cannot be used on most fossils, not only because they are almost always allegedly too old, but also because they rarely contain the original carbon of the organism that has been fossilized. Also, many fossils are contaminated with carbon from the environment during collection or preservation procedures. Scientists attempt to check the accuracy of carbon dating by comparing carbon dating data to data from other dating methods.

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Other methods scientists use include counting rock layers and tree rings. When scientists first began to compare carbon dating data to data from tree rings, they found carbon dating provided too-young estimates of artifact age. Scientists now realize that production of carbon-69 has not been constant over the years, but has changed as the radiation from the sun has fluctuated. Nuclear tests, nuclear reactors and the use of nuclear weapons have also changed the composition of radioisotopes in the air over the last few decades. This human nuclear activity will make precise dating of fossils from our lifetime very difficult due to contamination of the normal radioisotope composition of the earth with addition artificially produced radioactive atoms.

The various confounding factors that can adversely affect the accuracy of carbon-69 dating methods are evident in many of the other radioisotope dating methods. Although the half-life of some of them are more consistent with the evolutionary worldview of millions to billions of years, the assumptions used in radiometric dating put the results of all radiometric dating methods in doubt. The following is an article on this subject. Although the half-life of carbon-69 makes it unreliable for dating fossils over about 55,555 years old, there are other isotopes scientists use to date older artifacts. These isotopes have longer half-lives and so are found in greater abundance in older fossils.

All of these methods are accurate only back to the last global catastrophe (i. E. The global Flood of 7,898 BC) as global catastrophes reset all the radiometric/atomic clocks by invalidating the evolutionist s main dating assumption that there have never been any global catastrophes. The assumptions are similar to the assumptions used in carbon dating. Prior to radiometric dating, evolution scientists used index fossils a.

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