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Radiometric age dating examples

Since there doesn't seem to be any systematic error that could cause so many methods to agree with each other so often, it seems that there is no other rational conclusion than to accept these dates as accurate.However, this causes a problem for those who believe based on the Bible that life has only existed on the earth for a few thousand years, since fossils are found in rocks that are dated to be over 500 million years old by radiometric methods, and some fossils are found in rocks that are dated to be billions of years old.The half-life of this process is 1.25 billion years, meaning that it can date significantly older samples.In rubidium-strontium dating a rubidium-87 isotope becomes the daughter product strontium-87.We can assume that the Precambrian rocks already existed when life began, and so the ages of the Precambrian rocks are not necessarily related to the question of how long life has existed on earth.The Cambrian period is conventionally assumed to have begun about 550 million years ago.On the surface, radiometric dating methods appear to give powerful support to the statement that life has existed on the earth for hundreds of millions, even billions, of years.

This means that as the rubidium-87 decays and more strontium-87 is formed, the ratio will change.

If there is too much daughter product(in this case nitrogen-14), age is hard to determine since the half-life does not make up a significant percentage of the material's age.

The range of practical use for carbon-14 dating is roughly a few hundred years to fifty thousand years.

At the start, let me clarify that my main concern is not the age of the earth, the moon, or the solar system, but rather the age of life, that is, how long has life existed on earth.

Many dating methods seem to give about the same ages on meteorites.


  1. In radiometric dating, the decaying matter is called the parent isotope and the. scientists can measure the age of a sample by determining how many times its.

  2. Radiometric dating is largely done on rock that has formed from solidified lava. For example, at the stage when about 50 percent of the magma has solidified, the. on the radiometric ages computed by uranium-lead or thorium-lead dating.

  3. Sep 30, 2014. There are two basic approaches relative geologic age dating, and absolute. Say for example that a volcanic dike, or a fault, cuts across several. But the most accurate forms of absolute age dating are radiometric methods.

  4. Radiometric dating--the process of determining the age of rocks from the decay of their radioactive elements-. Examples of Dating Methods for Igneous Rocks.

  5. Feb 11, 1998. Radiometric dating methods estimate the age of rocks using calculations. "This is possible in potassium-argon K-Ar dating, for example.

  6. Oct 27, 2017. Is radiometric dating a reliable method for estimating the age of. As one example, age is not a substance that accumulates over time, but dust.

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