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Radiocarbon dating fossils

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If the atmosphere's ratio of carbon-14 to carbon-12 has doubled since the flood and we did not know it, radiocarbon ages of things living soon after the flood would appear to be one half-life (or 5,730 years) older than their true ages.If that ratio quadrupled, organic remains would appear 11,460 (2 x 5,730) years older, etc.

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As one moves to higher and higher layers, this concentration increases, but at a decreasing rate.Therefore, a radiocarbon year would not correspond to an actual year.As explained in recent measurements show that the ratio of carbon-14 to carbon-12 has been building up in the atmosphere.Afterward, less carbon would be available to enter the atmosphere from decaying vegetation.With less carbon-12 to dilute the carbon-14 continually forming from nitrogen in the upper atmosphere, the ratio of carbon-14 to carbon-12 in the atmosphere would increase.This element is locked in tiny zircons within the granite. While it stays within the zircon for a period of time, being a very small atom, helium escapes the zircon within a few thousand years.

When creation scientists studied granite samples, they made interesting discoveries.

As our knowledge continues to grow, what we know continues to be in agreement with Scripture.

Radiocarbon ages less than 3,500 years old are probably accurate.

When a living thing dies, its radiocarbon loss (decay) is no longer balanced by intake, so its radiocarbon steadily decreases with a half-life of 5,730 years.

If we knew the amount of carbon-14 in an organism when it died, we could attempt to date the time of death.

The key questions then are: Has the atmospheric ratio of carbon-14 to carbon-12 changed in the past, and if so, why and how much?