Dating Advice #214 – Ultimatum!
Why do some people who claim to be Christians, believe the world is billions of years old? The Geologic Column The Geologic Column is a diagram of sedimentary rock layers with the organisms that were fossilised in them representing the imaginary evolutionary timescale. Each rock layer has a starting and end date for when it was laid down.
The rock layers are supposed to indicate the dates that the fossils lived on earth. For example, dinosaur fossils are found in the Triassic, Jurassic and Cretaceous rock layers.
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This belief in long ages for the earth and the existence of life is derived largely from radiometric dating. These long time periods are computed by measuring the ratio of daughter to parent substance in a rock and inferring an age based on this ratio. This age is computed under the assumption that the parent substance say, uranium gradually decays to the daughter substance say, lead , so the higher the ratio of lead to uranium, the older the rock must be.
Of course, there are many problems with such dating methods, such as parent or daughter substances entering or leaving the rock, as well as daughter product being present at the beginning. Here I want to concentrate on another source of error, namely, processes that take place within magma chambers. To me it has been a real eye opener to see all the processes that are taking place and their potential influence on radiometric dating.
Radiometric dating is largely done on rock that has formed from solidified lava. Lava properly called magma before it erupts fills large underground chambers called magma chambers.
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