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.
Origin of geochronologygeo- + chronology
The chronology of the earth's history as determined by geologic events.
- ge′o·chron′o·log′ic ge′o·chron′o·log′i·cal
- (uncountable) The science of dating samples of rock or sediment.
- Geochronology allows us to see more precisely how the world has evolved.
- (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.
geo- + chronology