- the chronology of the earth, as based on both absolute and relative methods of age determination.
Origin of geochronology
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the branch of geology concerned with ordering and dating of events in the earth's history, including the origin of the earth itself
Word Origin and History for geochronology
Online Etymology Dictionary, © 2010 Douglas Harper