Methods scientific dating tamilnadu dating girls number
For each dating or chronological method there is a link in the box at right to take you to that section of this page.
The two main types of dating methods are relative and absolute.
Using the potassium-argon method, Fitch and Miller were the first to measure the age of the tuff.
Their result of 212–230 million years did not agree with the age of the fossils (elephant, pig, ape and tools) so they rejected the date.
This method is based on the assumption (which nearly always holds true) that deeper layers of rock were deposited earlier in Earth's history, and thus are older than more shallow layers.
The successive layers of rock represent successive intervals of time.