geologic time scale

== English == === Alternative forms === geological timescale, geologic timescale === Noun === geologic time scale (plural geologic time scales) A chronological scale of the earth's history used to measure the relative or absolute age of any part of geologic time. Synonym: GTS ==== Translations ==== === See also === eon epoch era period Appendix:Geologic timescale === Further reading === geologic time scale on Wikipedia.Wikipedia