C14 dating range
It's development revolutionized archaeology by providing a means of dating deposits independent of artifacts and local stratigraphic sequences. Libby in 1949, and has become an indispensable part of the archaeologist's tool kit since.
AMS counts the quantity of C isotope is constantly formed in the upper atmosphere thanks to the effects of cosmic rays on nitrogen-14 atoms.
Radiocarbon, or Carbon-14, dating is probably one of the most widely used and best known absolute dating methods. Radiocarbon dating relies on a simple natural phenomenon.