Thus there are annual rings in Greenland ice cores too. The days were measured at per year prior to the flood and eventually the calendars were shifted to the current day model. Huh, C. There are many different radioactive isotopes that are used for radiometric dating. The world itself has been dramatically changed on two occasions according to the Bible — during the Great Flood and in the resulting shifts that occurred.
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When a plant or animal dies, it stops taking in carbon. Are all radioactive dating methods unreliable? Related Articles BioLogos and the age of the earth: Religious conflict. For example, there is a radioactive form of potassium potassium that decays into argon argon Alternatively, there could have been radioactivity in the surrounding rocks which created some C in the sample. First, remember that no detectable 14 C at all should be present within these samples if they really are millions of years old.