Radiometric dating vs carbon dating speed dating in crewe cheshire
How does the geologic timescale fit with the view of a young earth?
There have been different methods of measuring carbon-14 since Willard Libby pioneered the radiocarbon dating technique in the 1940s – from the radiometric techniques of gas proportional counting and liquid scintillation counting to the more recent accelerator mass spectrometry (AMS).
When the weakly radioactive carbon-14 decays, it undergoes beta (β) decay producing nitrogen-14 and a beta particle.
Radiometric dating involves quantifying the amount of carbon-14 present by measuring the emitted beta particles from its radioactive decay.
The three key underlying assumptions are 1) the rate of decay of parent into daughter has remained constant throughout the unobservable past; 2) the specimen which we are examining hasn’t been contaminated in any way (that is, no parent or daughter has been added or taken away at any point during the unobservable past), and 3) we can determine how much parent and daughter were present at the beginning of the decay process – not all of the Pb206 present today necessarily came from decaying U238; Pb206 may have been part of the original constitution of the specimen.
In other words, in only a few thousand years, 1.5 billion years’ worth (at today’s rates) of radioactive decay has taken place” (This is at first glance surprising for long-agers, because of the ease with which one would expect helium (with its tiny, light, unreactive atoms) to escape from the spaces within the crystal structure.