After an organism has been dead for 60,000 years, so little carbon-14 is left that accurate dating can not be established.
Repeated, and tough, regimes of testing have confirmed the broad accuracy of the fossils and their dating, so we can read the history of life from the rocks with confidence.
Also, techniques such as taking samples from multiple sections and dating with multiple isotopes, will help crosscheck/confirm the accuracy of the date.
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.
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.
The do the radiometric dates of millions of years mean, if they are not true ages?
Scientists do not measure the age of rocks, they measure isotope concentrations, and these can be measured extremely accurately.
Geologist john woodmorappe, in his devastating critique of radioactive dating, points out that there are other large-scale trends in the rocks that have nothing to do with radioactive decay.
Most accurate radioactive dating
The method involves dividing both the parent and daughter concentrations by the concentration of a similar stable isotopein this case, strontium-86.
One example is k-ar dating of five historical andesite lava flows from mount nguaruhoe in new zealand.
Relative dating is done by observing fossils, as described above, and recording which fossil is younger, which is older.
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.
The method compares the abundance of a naturally occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.
In uranium-lead dating, the concordia diagram is used which also decreases the problem of nuclide loss.
Isochron dating technique was thought to be infallible because it supposedly covered the assumptions about starting conditions and closed systems.
Dating methods based on extinct radionuclides can also be calibrated with the u-pb method to give absolute ages.
Why is radiometric dating not accurate
I do think that radiometric dating is an accurate way to date the earth, although i am a geochronologist so i have my biases.
Methods can be used to date the age of a sediment layer, as layers deposited on top would prevent the grains from being "bleached" and reset by sunlight.
The procedures used to isolate and analyze the parent and daughter nuclides must be precise and accurate.
Cannot prove the age of the earth using a particular scientific method, any more than evolutionists can.
In reality, all dating methods, including those that point to a young earth, rely on unprovable assumptions.
2015 the regents of the university of california,Do you believe radiometric dating is an accurate way to date the earth?
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.
Example of short-lived extinct radionuclide dating is the 26al 26mg chronometer, which can be used to estimate the relative ages of chondrules.
Most accurate radiometric dating method
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.
Puzzling observations of tiny variations in nuclear decay rates have led some to question the science behind carbon-14 dating and similar techniques.
If the fossils, or the dating of the fossils, could be shown to be inaccurate, all such information would have to be rejected as unsafe.
Know it is accurate because radiometric dating is based on the radioactive decay of unstable isotopes.
 in other radiometric dating methods, the heavy parent isotopes were produced by nucleosynthesis in supernovas, meaning that any parent isotope with a short half-life should be extinct by now.
Isotopic systems that have been exploited for radiometric dating have half-lives ranging from only about 10 years (e.
Andrew snelling worked on dating the koongarra uranium deposits in the northern territory of australia, primarily using the uranium-thorium-lead (u-th-pb) method.
, an expert in the environmental fate of radioactive elements, identified 17 flaws in the isotope dating reported in just three widely respected seminal papers that supposedly established the age of the earth at 4.
Is radiometric dating accuracy
, when the materials are appropriate and one carefully avoids contamination and re setting radiometric clocks can be very accurate.
The discovery of means for absolute dating in the early 1900s was a huge advance.
's stones at kseberga, around ten kilometres south east of ystad, sweden were dated at 56 ce using the carbon-14 method on organic material found at the site.
This is because they believe that this is an accurate eyewitness account of world history, which bears the evidence within it that it is the word of god, and therefore totally reliable and error-free.
These techniques, unlike carbon dating, mostly use the relative concentrations of parent and daughter products in radioactive decay chains.
Are many examples where the dating methods give dates that are wrong for rocks of known age.
36cl has seen use in other areas of the geological sciences, including dating ice and sediments.
5:radiometric dating is a widely accepted technique that measures the rate of decay of naturally occurring elements that have been incorporated into rocks and fossils.
Methods of radiometric dating vary in the timescale over which they are accurate and the materials to which they can be applied.
Dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.
Summary, the carbon-14 method, when corrected for the effects of the flood, can give useful results, but needs to be applied carefully.
On the inaccuracies found using the Carbon-14 dating method, and the various other radioactive dating methods.
This would make things look much older than they really are when current rates of decay are applied to dating.
However, local eruptions of volcanoes or other events that give off large amounts of carbon dioxide can reduce local concentrations of carbon-14 and give inaccurate dates.
 dating can now be performed on samples as small as a nanogram using a mass spectrometer.
The dating methods are an objective and reliable means of determining ages, they should agree.
Amount of cosmic rays penetrating the earth's atmosphere affects the amount of 14c produced and therefore dating the system.
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.
Radiometric dating is the use of radioactive and radiogenic (those formed from the decay of radioactive parents) isotopes (isotopes are atoms of the same element that have different numbers of neutrons in their nuclei) to determine the age of something.
There are many radiometric clocks and when applied to appropriate materials, the dating can be very accurate.
 such a re-calibration makes sense of anomalous data from carbon datingfor example, very discordant dates for different parts of a frozen musk ox carcass from alaska and an inordinately slow rate of accumulation of ground sloth dung pellets in the older layers of a cave where the layers were carbon dated.
The wood was dated by radiocarbon (14c) analysis at about 45,000 years old, but the basalt was dated by potassium-argon method at 45 million years old!
 most samples of basalt closest to the fossil-bearing strata give dates of about 23 ma (mega annum, million years) by the argon-argon method.
Could you also please explain further what radiometric dating is and the process to use it?