K ar dating method ppt
However, even with such historical calibration, archaeologists do not regard C produced and therefore dating the system.
The amount of cosmic rays reaching the Earth varies with the sun's activity, and with the Earth's passage through magnetic clouds as the solar system travels around the Milky Way galaxy.
So, we have a “clock” which starts ticking the moment something dies.
Obviously, this works only for things which were once living.
The strength of the Earth's magnetic field affects the amount of cosmic rays entering the atmosphere.
A stronger magnetic field deflects more cosmic rays away from the Earth.
Also, the Genesis flood would have greatly upset the carbon balance.
There are various other radiometric dating methods used today to give ages of millions or billions of years for rocks.Since the flood was accompanied by much volcanism (see Noah's Flood…, How did animals get from the Ark to isolated places? ), fossils formed in the early post-flood period would give radiocarbon ages older than they really are.In summary, the carbon-14 method, when corrected for the effects of the flood, can give useful results, but needs to be applied carefully.We will deal with carbon dating first and then with the other dating methods.Carbon has unique properties that are essential for life on Earth.