Geochronology is the science of determining the age of rocks, fossils, and sediments,[1] using signatures inherent in the rocks themselves.[2]
Def. the "science of dating samples of rock or sediment",[3] any "one of the methods by which the age of different samples of rock can be determined"[3] or the "division of ancient time into named subdivisions / periods"[4] is called geochronology.
Under development are
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