What are some of the problems with radioactive isotope dating

But he was an honest and somewhat outspoken person who liked to tell it straight.

And when it is tested there are often problems and historical dates always have precedence over carbon dates.

36cl has seen use in other areas of the geological sciences, including dating ice and sediments.

Finally, correlation between different isotopic dating methods may be required to confirm the age of a sample.

Your helioseismic dating claim is not evidence but just an interpretation to fit within the long-age view.

To be able to distinguish the relative ages of rocks from such old material, and to get a better time resolution than that available from long-lived isotopes, short-lived isotopes that are no longer present in the rock can be used.

I missed someones comments to this effect please accept my apologies i couldnt stomach reading everything above.

Billion years, providing a built-in crosscheck that allows accurate determination of the age of the sample even if some of the lead has been lost.

Once the plant or animal dies this exchange is cut off and the proportion of the decaying radioactive carbon 14 begins to decrease.

What are some of the problems with radioactive isotope dating

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Radiometric dating generally requires that the parent has a long enough half-life that it will be present in significant amounts at the time of measurement (except as described below under "dating with short-lived extinct radionuclides"), the half-life of the parent is accurately known, and enough of the daughter product is produced to be accurately measured and distinguished from the initial amount of the daughter present in the material.

They call eyewitnesses who are required to report what they saw and heard and not what they think or suppose or what someone else thought.

) you should be able to see where these assumptions are being made (see dating secrets).

- here somethings that always bothered me if evolution were true wouldnt our brains be just the right size or maybe slightly less than we currently need?

As i have said in past postings, radiometric dating is supported by multiple measures (multiple times of the same and different elements).

In other words, you can know some particular thing is true without a doubt despite not knowing everything.

Think on some level each of us can only bring our personal beliefs to the table when it comes to discussions related to the origins of the earth and the purpose of life.

C14 has too short a half-life for measuring but other radioactive elements like uranium (half-life about 10 to the power have much longer half-lives.

Secondly, you must have an observable time span so we can be certain nothing has affected the amount of the radioactive element being measured, e.

What are some problems with radioactive dating

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Who do not like these young-age results will argue against the assumptions, which of course is arguing about something that can never be checked.

A scenario does not answer all of the questions or solve all of the problems that radiometric dating poses for those who believe the genesis account of creation and the flood.

(which by the way if they read their bibles at all instead of spouting whatever nonsense some fire and brimstone preacher told them they would know they cannot and should not do).

A number of processes could cause the parent substance to be depleted at the top of the magma chamber, or the daughter product to be enriched, both of which would cause the lava erupting earlier to appear very old according to radiometric dating, and lava erupting later to appear younger.

Dating methods are not radiometric dating methods in that they do not rely on abundances of isotopes to calculate age.

Lavas exhibiting somewhat different mineral compositions,Particularly if an extensive period of time separated the eruptions.

As i am sure you are aware radioactive carbon 14 is formed by the action of solar radiation on nitrogen in the atmosphere.

Previous commenters like steve have already pointed out, both evolutionist and creationist scientists arent very effective when it comes to dating things.

Rate of creation of carbon-14 appears to be roughly constant, as cross-checks of carbon-14 dating with other dating methods show it gives consistent results.

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Another issue, one of the biggest problem for creationists is that radiocarbon data agrees with tree-ring data (and absolutemethod of dating) well back to 10,000 years ago, so nullifying all arguments that radio-carbon dating is fundamentally flawed.

Dating has been carried out since 1905 when it was invented by ernest rutherford as a method by which one might determine the age of the earth.

Or thorium has to concentrate relative to the lead isotopes,More in some places than others.

If geologists were wrong about their assumptions, then using potassium/argon, argon/argon, and lead/uranium dating should all give us different answers (since they decay at different rates).

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.

As for radiometric dating,you only assume that there exists a constant half life, and that there have been no flux in the atoms of daughter or parent atoms.

Recall that all such dating exercises are driven by the million-year worldview of the researcher.

[16] dating can now be performed on samples as small as a nanogram using a mass spectrometer.

Relatively short-range dating technique is based on the decay of uranium-234 into thorium-230, a substance with a half-life of about 80,000 years.

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At a certain temperature, the crystal structure has formed sufficiently to prevent diffusion of isotopes.

The decay rates of some radioactive decay systems have been observed to have varied in the laboratory and some seem to be connected with solar phenomenon.

If the physics behind radiometric dating didnt work, you wouldnt be reading these words on a computer screen or smart phone right now.

As the mineral cools, the crystal structure begins to form and diffusion of isotopes is less easy.

The dating is calibrated against how long the carbon 14 takes to decay in a certain known period.

Illustration i use to explain the assumptions made in terms of the age of the earth:Imagine i take a jug to fill a glass of water, and somebody enters the room just as the last few drops fall into the glass.

Ever talk to one of your old friends about something that happened in your childhoods, but you both remember completely differently?

Radiometric dating methods use this basic principle to extrapolate the age of artifacts being tested.

Thus, as an event marker of 1950s water in soil and ground water, 36cl is also useful for dating waters less than 50 years before the present.

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The supposed age of index fossils is based on how long these 19th century evolutionists believed one kind of animal would take (somehow) to evolve into a different kind of animal.

. suppose we have three sources with concentrations of parent,Daughter, and non-radiogenic isotope of daughter of pi, di, ni,Respectively, for i = 1,2,3.

I can recall us students being somewhat stunned and no one had any come-back questions or debated the issue with him, as he is a geologist with extensive practical experience.

This converts the only stable isotope of iodine (127i) into 128xe via neutron capture followed by beta decay (of 128i).

Melting a rock resets its isotope proportions back to zero, (and we can test this with reliable eye witnesses) so no guessing is involved.

All dating methods that support this theory are embraced, while any evidence to the contrary, e.

Mathematical premise undergirding the use of these elements in radiometric dating contains the similar confounding factors that we find in carbon-14 dating method.

Yes, believing in a young earth sometimes takes faith but not near as much faith as it takes to believe in evolution.

Stimulating these mineral grains using either light (optically stimulated luminescence or infrared stimulated luminescence dating) or heat (thermoluminescence dating) causes a luminescence signal to be emitted as the stored unstable electron energy is released, the intensity of which varies depending on the amount of radiation absorbed during burial and specific properties of the mineral.

Half-life and carbon dating | Nuclear chemistry | Chemistry | Khan Academy

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Isochron dating, which specifically eliminates the need to know the original ratio of parent and daughter products in a rock.

It is possible that the ratio of daughter to parent substances for radiometric dating could differ in the different minerals.

If this occurs, initial volcanic eruptions would have a preponderance of daughter products relative to the parent isotopes.

Krot(2002) dating the earliest solids in our solar system, hawai'i institute of geophysics and planetology http://www.

Principles of isotope geology: john wiley and sons,It is interesting that contamination and fractionation issues are.

The dating is simply a question of finding the deviation from the natural abundance of 26mg (the product of 26al decay) in comparison with the ratio of the stable isotopes 27al/24mg.

And that is what geologist do, they make up an assumed geological history for rock depending on the numbers that come from the geochronology lab (see dating secrets).

Attempt to check the accuracy of carbon dating by comparing carbon dating data to data from other dating methods.

Furthermore, sometimes when we produce a series of articles or reports, we briefly summarize or recap the preceeding ones at the beginning of the new section, to tie them together in correct order.