# Isochron dating creationism, non-radiometric Dating

In other words, random gain or loss of P does not affect a zero-age isochron. Isotope dating satisfies this requirement, as daughter products do not decay back to the original parent element. Potential problems for generic dating Some assumptions have been made in the discussion of generic dating, for the sake of keeping the computation simple. Isochron dating bypasses the necessity of knowing the quantity of initial daughter product in the rock by not using that value in the computation. References Generic Radiometric Dating The simplest form of isotopic age computation involves substituting three measurements into an equation of four variables, and solving for the fourth.

This results in an identical Y-value for the data points representing each mineral matching the Y-value of the source material. Non-radiometric Dating These techniques utilize the physical parameters of the earth, such as ice cores, annual lake sediments, and astronomical cycles. This assumes that the two isotopes were incorporated in the same ratio in each mineral as the rock formed. And for radiometric dating it means that the decay constant of the parent has not changed over earth's history.

Constant Decay Rate and Uniformitarianism What about the radiometric assumption of constant decay rate? Radioactive parent P atoms decay to stable daughter D atoms e.

Specific loss of P required to yield a different colinear plot. The final condition is the number of atoms of parent and daughter isotopes remaining in the rock and can easily be measured in a lab. Instead they claim that the field decrease can be used as a clock to date the earth since it has been decaying since the origin of the earth. The amount of non-decay isotope in the sample does not change.

Some see these physical events as being related to changes in physical laws e. However, if the rocks and minerals are only partially re-homogenized, then not all ratios of isotopes in the rock may be altered. There is no good way to tell how close the computed result is likely to be to the actual age. This partial re-homogenization should result in the ratios, when plotted on the isochron, not falling on the same line.

Once the ratios are plotted, the age of the rock being dated can be determined based on the slope of the line. In words, earth's population should be some million, billion, billion, billion. In most cases, the slope of the line generated by the isochron method gives an age for a rock sample of millions, or even billions of years. Moreover, the daughter atoms produced by decay in a mineral are isotopes of different elements and have different ionic charges and radii compared with their parents. The amount of daughter isotope at the time of formation of the sample is zero or known independently and can be compensated for.

These are largely ignored by mainstream science but could be the key to the massive discrepancy when it comes to dating the earth. In other words, all Ar in a rock is assumed to have been produced by in-situ radioactive decay of K within the rock since it formed and there was zero Ar in the rock when it solidified. The amount of P in each sample, and The extent to which it is enriched in D, relative to Di.

In this example, the mineral started out with a certain ratio of Lead to Lead and a certain ratio of Uranium to Lead. If this requirement is violated, it is sometimes still possible to obtain an isochron plot with reasonably colinear data points. Of course, population growth is exponential, but even then the numbers don't add up.

Was there any chance of helium from any other sources contaminating the sample? In order to use the valuable information provided by radiometric dating, a new method had to be created that would determine an accurate date and validate the assumptions of radiometric dating. Another major problem is that the the diffusion measurements were taken while the samples were in a vacuum. There are some isochron results which are obviously incorrect.

The resulting plotted points should line up near a single sloping line which is then used to calculate the age. This is known as isotope fractionation. Excess Helium in rocks may be a genuine mystery, but all possible explanations must be investigated before a true understanding can emerge. Thus, as decay occurs, the parent ratio decreases and the daughter ratio increases. Others disagree and say that studies in theoretical physics suggest accelerated nuclear decay can occur e.

The reasoning for this is that the helium release by alpha decay can too easily escape the surrounding rock. Astronomical cycles can also be used to measure relative age. Through these relations we can deduce that if the speed of light is slowing down, then the radioactive decay rate is also slowing down. But the computed age is not affected. In addition, it requires that these measurements be taken from several different objects which all formed at the same time from a common pool of materials.

## Non-radiometric Dating

Was the rock sample kept at the same temperature and pressure during storage as that it would have experienced had it remained in the ground? Complete homogenization of radiogenic daughter resets the isochron age to zero. If the results were essentially random numbers, that would not be the expected distribution of results.

And there are known processes which can yield an incorrect isochron age. Instead, the points would be in a scatter on the graph. Resolving a Christian Controversy. There are minor differences between isotopes of the same element, and in relatively rare circumstances it is possible to obtain some amount of differentiation between them. This computation appears much more realistic.

## The Age of the Earth

Master Books, Forest Green, Arkansas, p. This results in a range of X-values for the data points representing individual minerals. Each such age would match the result given by the isochron. The second assumption of isochrons is that the initial ratios of the daughter isotope to the non-decay product isotope of the same element are uniform throughout the sample. In order to balance the discussion we should also challenge the currently accepted radiometric dating methods.

Magnetic field decrease applies to other planets. However, neither of these questions were answered, and the wording of the paragraph indicates that the samples that were sent to the laboratory were excavated thirty years previous and not fresh. But assuming the earth was formed at the time of the rest of our solar system, then recovered moon rock and meteorites can also be used to estimate the age of the earth.

Porig - The quantity of the parent isotope that was originally present. Isochron methods avoid the problems which can potentially result from both of the above assumptions.

In most cases, any age less than about P half-lives will include zero within its range of uncertainty. Migration of parent in two data points. This is an important point.

Using the slope of an isochron graph, an approximate age can be calculated for the sample. Partial homogenization of radiogenic daughter in some exceptional cases results in an apparently valid isochron of reduced age. As the number of mineral samples that are used in the isochron increases, the more confident we can be that the assumptions of isochron dating are valid, and that the date being reporded is accurate. This can happen, but it causes the points on the isochron plot to be scattered, feminists destroy dating so it is easy to recognize.

So if the speed of light slows down, then the radioactive decay rate also slows down, link. While Radon is a daughter product in the decay chain from Uranium to Lead, it is relatively abundant in Earth's crust and is constantly escaping through the crust into the atmosphere. The X-axis of the graph is the ratio of P to Di. This assumed the ocean was initially pure water and that it's salinity was derived from continental erosion.

Such an assumption rests on the old evolutionary concept of uniformitarianism. This is a necessary and expected consequence, if the additional D is a product of the decay of P in a closed system over time. This is measured directly. The range of uncertainty varies, and may be as much as an order of magnitude different from the approximate value above. The features of the isochron method provide a way do reduce doubt and speculation about an age that is computed using these methods.

If these are suspect then the disputed methods take on more meaning. This concept seems to be supported by theoretical physics, which suggests that a decrease in the speed of light, c, see Is the Velocity of Light Constant in Time?

## Strengths and weaknesses of radiometric and other dating methods

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