2017-03-10 10:57:05.0 [tstevens] update Definition (Pertaining to the methods, results, and studies involved in determining the age of rock units found in and on the Earth's crust.); update Definition (USGS);
AGE DETERMINATIONS
Pertaining to the methods, results, and studies involved in determining the age of rock units found in and on the Earth's crust.
ROCKS/MINERALS/CRYSTALS