It may eventually go back as far as 45,000 years, which is the approximate limit of the C-14 technique. This will increase the level of cosmic rays in the upper atmosphere, generate more C-14, and upset the C-14 dating process.
The Earth's magnetic field has been decreasing for many decades. Any affect that the Earth's field may have on the level of C-14 in the atmosphere -- and thus on the dating method -- would be corrected by the calibration procedure.
The Genesis flood is described in Genesis as occurring circa 2349 BCE.
Samples from Egypt before, during and after the flood whose dates are precisely known have been C-14 dated without any difficulty.
They must be in error by a factor of at least 400,000 times. It is our policy to accurately portray both (or all) sides to each belief whenever multiple viewpoints exist.
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Since the accuracy of the Bible cannot be questioned, C-14 dating must contain massive errors -- by as much as a factor of five.
Similarly, other radiometric measurements which do not use carbon, have dated rocks in northern Quebec, Canada, at almost four billion years old.For example, they tested a piece of wood from Pharaoh Zoser's tomb with the known tomb date, which was known to be circa 2700 to 2600 BCE. Since then, extended calibration checks have been made using U. bristlecone pine, German and Irish oak, and other species of trees.That work pushed the calibration back well beyond recorded history to 10,000 BP (years before the present.) Other correlations have extended that to 26,000 years BP.Again, C-14 dating results on Egyptian samples before, during and after the flood were found to be accurate when the data was compared with the actual dates as independently obtained.If there were a great deal of volcanism in the 23rd century BCE, it does not show up in the C-14 data.The flood of Noah, as described in Genesis, Chapter 6 to 8, would have upset the carbon balance on earth by burying large amounts of carbon containing plants which became coal, and gas.