Concept half life used radiometric dating

the geological column and approximate ages of all the fossil-bearing strata were all worked out long before anyone ever heard or thought about radioactive dating …

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Most scientists today believe that life has existed on the earth for billions of years.

These isotopes have longer half-lives and so are found in greater abundance in older fossils.

Some of these other isotopes include: back to the last global catastrophe (i.e.

Any radiometric dates that show a supposedly “old” rock to be young are rejected “Few people realize that the index fossil dating system, despite its poor assumptions and many problems, is actually the primary dating tool for geologic time. In other words, radiometric dating methods are actually fit into the geological column, which was set up by [index] fossil dating over 100 years ago.”(Michael Oard, meteorologist and creationist scientist, 1984) All radiometric dating methods use this basic principle to extrapolate the age of artifacts being tested.

These long time periods are computed by measuring the ratio of daughter to parent substance in a rock, and inferring an age based on this ratio.

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