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Radiometric dating calibration

Until recent years, scientists who believe in creation haven't had the necessary resources to explore radiometric dating in detail.

A 10 gram sample of U-238Now that has changed, and some important discoveries are being made.

Plants take in carbon dioxide, incorporating in their tissues both carbon-14 (unstable) and normal carbon-12 (stable) in the same proportion as they occur in the atmosphere .

The samples were from a mile below the earth, which, according to inflated evolutionary years, were 1.5 billion years old.

The helium still locked in the samples was studied as well as the rate at which the helium diffused from the rock.

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.

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?

The assumption usually made, but rarely acknowledged, is that the ratio of carbon-14 to carbon-12 in the atmosphere before the industrial revolution has always been the sameabout one in a trillion.Radiocarbon ages do not increase steadily with depth, as one might expect. In other words, the concentration of carbon-14 is unexpectedly low in the lower organic layers.As one moves to higher and higher layers, this concentration increases, but at a decreasing rate.However, for the last 3,500 years, the increase in the ratio has been extremely slight.Radiocarbon dating of vertical sequences of organic-rich layers at 714 locations worldwide has consistently shown a surprising result.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.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.However, before accepting any radiocarbon date, one should know how the technique works, its limitations, and its assumptions.One limitation is that the radiocarbon technique dates only material that was once part of an animal or plant, such as bones, flesh, or wood. To understand the other capabilities and limitations of radiocarbon dating, we must understand how it works and consider the flood. However, roughly one in a trillion carbon atoms weighs 14 atomic units. It is also called radio carbon because it is radio active (but not dangerous).

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