geologic time scale

What is geologic time scale?

geologic time scale meaning a chronological sequence of geologic events usually represented in the form of a chart showing names of various rock layers and indicating the estimated duration of each geologic unit.

See also:

  • Geologic Time (Fact Sheet 2007-3015)
  • Divisions of Geologic Time?Major Chronostratigraphic and Geochronologic Units


reference: USGS – Earthquake Glossary