Having an accurate time scale is a crucial aspect of reconstructing how anatomical and behavioral characteristics of early hominids evolved. Part of Hall of Human Origins. The fossil record is well known to be incomplete. This page has been archived and is no longer updated. Date a Rock!
Radiometric datingradioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbonin which trace radioactive impurities were selectively incorporated when they were formed. Slideshows Videos Audio. Geologist ralph harvey and of the age of chemical elements; hominid evolution on america! Your email address is used to log in and will not be shared or sold. Geologist Ralph Harvey and historian Mott Greene explain the principles of radiometric dating and its application in determining the age of Earth.
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