Geochronology definitions

jē'ō-krə-nŏl'ə-jē
The chronology of the earth's history as determined by geologic events.
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The branch of geology dealing with the age of the earth and its materials, the dating of evolutionary stages in plant and animal development, etc.
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(uncountable) The science of dating samples of rock or sediment.

Geochronology allows us to see more precisely how the world has evolved.

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(countable) Any one of the methods by which the age of different samples of rock can be determined.

The history of the East–Antarctic shield has been uncovered through uranium–lead geochronology.

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Origin of geochronology

geo- +‎ chronology