Errors in radiometric dating Namibia webchat

From the mapped field relationships, it is a simple matter to work out a geological cross-section and the relative timing of the geologic events.His geological cross-section may look something like Figure 2.The older a sample is, the less (the period of time after which half of a given sample will have decayed) is about 5,730 years, the oldest dates that can be reliably measured by this process date to around 50,000 years ago, although special preparation methods occasionally permit accurate analysis of older samples.The idea behind radiocarbon dating is straightforward, but years of work were required to develop the technique to the point where accurate dates could be obtained.This argument was popularized by Henry Morris (1974, p.164), who used some calculations done in 1968 by Melvin Cook to get the 10,000-year figure. Whitelaw, using a greater ratio of carbon-14 production to decay, concluded that only 5000 years passed since carbon-14 started forming in the atmosphere!The argument may be compared to filling a barrel which has numerous small holes in its sides.The barrel represents the earth's atmosphere in which the carbon-14 accumulates.The water leaking out the sides of the barrel represents the loss (mainly by radioactive decay) of the atmosphere's supply of carbon-14.

Radiometric dating and stratigraphic principles are combined to establish the conventional geological time scale.Scientists apply these principles to date rocks, which can then be used to assign ages to fossils.The isochron radiometric dating technique (and related ones) is widely used in isotope geology, and does not fall prey to many common creationist criticisms of radiometric dating.Few discussions in geology or evolution can occur without reference to geologic time.In this article, the standard time scale used by geologists is depicted and described.

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