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Unformatted text preview: locality and the strata at another Eon-The first three, Archean, Proterozoic, Phanerozoic eons constitute the Precambrian Precambrian: same as above Era: Phanerozoic subdivided into Paleozoic, Mesozoic, and Cenozoic Radiometric dating: the science of dating geological materials in years Radioactive decay: Radioactive isotopes are unstable: after a given time, they undergo a change called radioactive decay which converts them into a different element Parent isotope: The isotope that undergoes decay Daughter isotope: the decay product of radioactive decay Half-life: How long it takes for half of a group of isotopes to decay Eon -> Era ->Period ->Epoch...
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This note was uploaded on 02/01/2012 for the course GEOLOGY 100 taught by Professor Lepre during the Fall '11 term at Rutgers.
- Fall '11