In some cases, the ages are correlated to other rock layers of supposedly known age or by using index fossils. The whole-rock and separated mineral samples allow a method known as isochron dating to be done. Similarly, loss of radiogenic argon by weathering would mainly be confined to the outer surface of a mineral. The same is true of coal which was supposedly deposited hundreds of millions of years ago, according to the evolutionary model. There are key assumptions that we must accept in order for the method to be reliable. Used mass spectrometers are currently available at eBay. The assumptions used to interpret the data influence the conclusion. Anomalies and other objections that have been raised by creationists are dealt with in detail in Roger Wiens' article [ Wien ], Mark Isaak's book [ Isaak , pg. Thus in this case, as in many others that have been raised by skeptics of old-earth geology, the "anomaly" is more imaginary than real. This is supported by the presence of large amounts of helium in some minerals.
Because these dates are based on methods with multiple assumptions, and are contrary to the Bible, we must reject that they are accurate. The simplest means is to repeat the analytical measurements in order to check for laboratory errors. The short half-life of carbon means it cannot be used to date fossils that are allegedly extremely old, e. Lava erupting earlier would come from the top of the magma chamber, and lava erupting later would come from lower down. Over a thousand research papers are published a year on radiometric dating, essentially all in agreement. Here is a condensed summary of these items, quoted from Wiens' article [ Wiens ]: These methods assume that the distribution of index fossils and the correlation of strata are well understood on a global scale. The following quotation from Elaine G. Starting from biblical assumptions regarding the Flood and Creation can provide a new framework for interpreting current scientific data. For example, as of the present date, numerous used mass spectrometers are available for sale on eBay. This is some finite point in the future. For additional discussion, see Conspiracy. This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. There are only a few different dating methods. But there is no way to measure how much parent element was originally there. All of the different dating methods agree--they agree a great majority of the time over millions of years of time. The same goes for the dating of rocks using radioisotopes. The isochron techniques are partly based on this principle. Given that these dates differ by no more than the statistical error bars of the measurements 11, years , they are essentially identical. The facts from the rock layers do not speak for themselves—they must be interpreted. The team took samples of diabase, an igneous rock, and tested them using various radiometric dating techniques. Scientists now realize that production of carbon has not been constant over the years, but has changed as the radiation from the sun has fluctuated. The presence of lots of helium in the crystals is evidence in support of a young earth. One volcanic rock layer from the top of Grand Canyon was dated million years older than the oldest rocks below it near the bottom of the canyon. This is not at all true, though it is implied by some young-Earth literature.
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