A dataframe of the Geological Timescale 2020. Age data from the International Commission on Stratigraphy. Supplementary information is included in the dataset for plotting functionality (e.g. GTS2020 colour scheme).
Format
A data frame with 189 rows and 9 variables:
- interval_number
Index number for the temporal order of all intervals present in the dataset.
- interval_name
Names of intervals in the dataset.
- rank
The temporal rank of intervals in the dataset.
- max_ma
The maximum age of the interval in millions of years before present.
- mid_ma
The midpoint age of the interval in millions of years before present.
- min_ma
The minimum age of the interval in millions of years before present.
- duration_myr
The duration of the interval in millions of years.
- font
Colour of font to use for plotting in conjunction with the colour column.
- colour
Colours of stages based on the ICS timescale.
- abbr
Standard abbreviations of interval names where appropiate.
Source
Compiled by Lewis A. Jones (2022-07-02) from the ICS.