A dataset containing the boundary ages, abbreviations, and colors for the eons of the Geologic Time Scale. Based on The ICS International Chronostratigraphic Chart (v2024/12), by Cohen, Finney, Gibbard, and Fan.
Format
A data frame with 3 rows and 5 variables:
- name
eon name
- max_age
maximum age, in millions of years
- min_age
minimum age, in millions of years
- abbr
eon name abbreviations
- color
the colors for each eon, according to the Commission for the Geological Map of the World
- lab_color
the label colors for each eon, either white or black, whichever has better contrast with the background color, based on recommendations by the International Telecommunication Union