Geologic time

The definition of geologic time is the physical formation and developement of the earth. The geologic time scale is used to describe the timing of events that occured during the development of the earth. The overall act of the geological time scale is to map the history of the earth. The age of rock in years is called "absolute age".http://www.cotf.edu/ete/modules/msese/earthsysflr/ages.html That website explained things in an interesting way.