Radiometric dating astronomy

If you want to know how old someone or something is, you can generally rely on some combination of simply asking questions or Googling to arrive at an accurate answer. This applies to everything from the age of a classmate to the number of years the United States has existed as a sovereign nation and counting as of But what about the ages of objects of antiquity, from a newly discovered fossil to the very age of the Earth itself? Sure, you can scour the Internet and learn rather quickly that the scientific consensus pins the age of of the planet at about 4.
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Radiometric Age Dating - Geology (U.S. National Park Service)

Although seemingly insignificant in themselves, the anomalous K-Ar "model ages" for these recent andesite flows at Mt Ngauruhoe, New Zealand, lead to deeper questions. From where did it come? Answers to these questions in turn point to significant implications that totally undermine such radioactive "dating" and that are instead compatible with a young Earth. It shows how there was excess Argon in some andesite flows. To use rates of racemization as a dating method, however, the entire history of the fossil material would have to be known, including temperature and the entire diagenetic process, especially the chemical environment that contributed to this process, and most especially the pH. Since all of these factors, most of which accelerate racemization rates, cannot be known, it is suggested that the apparent ages obtained by this method are unreliable and, with few exceptions, are much older than the real ages.
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Radiometric Dating

Many independent measurements have established that the Earth and the universe are billions of years old. Geologists have found annual layers in ice that are easily counted to multiple tens of thousands of years, and when combined with radio isotope dating, we find hundreds of thousands of years of ice layers. Using the known rate of change in radio-active elements radiometric dating , some Earth rocks have been shown to be billions of years old, while the oldest solar system rocks are dated at 4.
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Radiometric dating calculates an age in years for geologic materials by measuring the presence of a short-life radioactive element, e. The term applies to all methods of age determination based on nuclear decay of naturally occurring radioactive isotopes. Bates and Jackson To determine the ages in years of Earth materials and the timing of geologic events such as exhumation and subduction, geologists utilize the process of radiometric decay. Geologists use these dates to further define the boundaries of the geologic periods shown on the geologic time scale. Radiometric decay occurs when the nucleus of a radioactive atom spontaneously transforms into an atomic nucleus of a different, more stable isotope.
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