Definition of absolute dating of fossils
Relative dating is the science determining the relative order of past events, without necessarily determining their absolute age Absolute dating is the process of determining an approximate computed age in archaeology and geology.
Absolute dating of rock is achieved by radiometric dating techniques.
But when laid on the ground, they are fixed to the position that the north magnetic pole was at the time.
If we look at what coordinates are oriented such minerals at the site, we can associate it with a particular time.
Some minerals have magnetic properties and are directed towards the north magnetic pole when in aqueous suspension, for example clays.
The half-lives of several radioactive isotopes are known and are used often to figure out the age of newly found fossils.
Different isotopes have different half-lives and sometimes more than one present isotope can be used to get an even more specific age of a fossil.
As radioactive isotopes of elements decay, they lose their radioactivity and become a brand new element known as a daughter isotope.
By measuring the ratio of the amount of the original radioactive element to the daughter isotope, scientists can determine how many half-lives the element has undergone and from there can figure out the absolute age of the sample.