12 3 dating with radioactivity
12 3 dating with radioactivity - datinglake com
These techniques, unlike carbon dating, mostly use the relative concentrations of parent and daughter products in radioactive decay chains.
There are various other radiometric dating methods used today to give ages of millions or billions of years for rocks.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.That is, they take up less than would be expected and so they test older than they really are.Furthermore, different types of plants discriminate differently.Overall, the energy of the Earth's magnetic field has been decreasing, so more C is being produced now than in the past.
This will make old things look older than they really are.It cannot be used to date volcanic rocks, for example.The rate of decay of N in 5,730 years (plus or minus 40 years).Also, the Genesis flood would have greatly upset the carbon balance.The flood buried a huge amount of carbon, which became coal, oil, etc., lowering the total C ratio in plants/animals/the atmosphere before the flood had to be lower than what it is now.This also has to be corrected for. Second, the ratio of C in the atmosphere at that time to be estimated, and so partial calibration of the “clock” is possible.