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).

## Usage

GTS2020

## 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.

## Source

Compiled by Lewis A. Jones (2022-07-02) from the ICS.

## References

Gradstein, F.M., Ogg, J.G., Schmitz, M.D. and Ogg, G.M. eds. (2020). Geologic Timescale 2020. Elsevier.