lgb dating in bristol - Radioactive dating fossils isotopes used
In total, scientists use 18 methods of radioisotope dating and many variations and techniques within each method.
They choose appropriate dating method depending on particular samples and particular periods of time.
The half-life of potassium-40 is nearly 1.25 billion years, which makes this isotope suitable for measuring not only the age of dinosaurs, but also the age of the oldest rocks on Earth, which are over 4 billion years old.
But it is not suitable for the age less than 100 thousand years.
Half-life of rubidium-87 is 48.8 billion years, which exceeds the age not only of our Solar System, but also of our universe, manyfold.