Dating website terminology
: The following is taken from several on-line sources, chiefly Illustrated Glossary of Geologic Terms by Steven M. Richardson (Englewood Cliffs, NJ, Prentice Hall, 1995); definitions conform generally, and in some cases specifically, to definitions given in Robert L Bates and Julia A Jackson (editors), Glossary of Geology, 3rd ed., American Geological Institute, Alexandria, Virginia, 1987.), and Radiometric Dating A Christian Perspective Dr. Wiens Division of Geological & Planetary Sciences California Institute of Technology reprinted from Graham Kendell archives. Elsberry's Archean The second oldest eon in Earth history.Richardson, professor of geology at Iowa State University (based on the glossary in Earth: An Introduction to Geologic Change, by S. It followed the Hadean, and lasted from around 3.8 to 2.5 billion years ago.Fission The spontaneous or induced splitting, by particle collision, of a heavy atomic nucleus into a pair of fragments plus some neutrons.Controlled induced fission can be used as a source of nuclear power.But no change in the half-lives of elements used for radiometric dating has ever been verified.
Ediacaran most recent period of the Proterozoic era, characterised by the appearance of both enigmatic Vendobionta and trace fossils that seem to pertain to more conventional organisms.
Electron-capture decay The only type of radioactive decay that requires the presence of something — an electron — outside the atom's nucleus.