Radioactive age dating
The object's approximate age can then be figured out using the known rate of decay of the isotope.Radiocarbon dating is one kind of radiometric dating, used for determining the age of organic remains that are less than 50,000 years old.By the way, it is important to understand that most rock strata “dates” were actually assigned long before the first use of radioactive age estimating methods in 1911.The Carbon-14 age estimating method is, at best, only useful for estimating the age of things that are thousands of years old, not millions or billions.For inorganic matter and for older materials, isotopes of other elements, such as potassium, uranium, and strontium, are used.Mikhail Marov of the Vernadsky Institute of Geochemistry and Analytical Chemistry said scientists had determined the meteorite's age by observing the amount of radioactive isotopes and their decay byproducts, a technique called of a granodiorite at the Cuttaburra A prospect indicates that this mineralised system may be Middle Silurian in age and thus indicating that the host rocks are older than those hosting the Cobar-type deposits. There is no absolutely reliable long-term radiological 'clock'." "The age of our globe is presently thought to be some 4.5 billion years, based on radio-decay rates of uranium and thorium.
The amount of the isotope in the object is compared to the amount of the isotope's decay products.
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any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.
There has been in recent years the horrible realization that radio-decay rates are not as constant as previously thought, nor are they immune to environmental influences.
And this could mean that the atomic clocks are reset during some global disaster, and events which brought the Mesozoic to a close may not be 65 million years ago, but rather, within the age and memory of man." Author: Paul S. Copyright © 1998, Films for Christ, All Rights Reserved—except as noted on attached “Usage and Copyright” page that grants Christian Answers.