geochronology

== English == === Etymology === From geo- +‎ chronology. === Noun === geochronology (countable and uncountable, plural geochronologies) (uncountable) The science of dating samples of rock or sediment. (countable) Any one of the methods by which the age of different samples of rock can be determined. (uncountable) The division of ancient time into named subdivisions / periods ==== Derived terms ==== ==== Translations ==== ==== See also ==== geochronology on Wikipedia.Wikipedia