periods

A dataset containing the boundary ages, abbreviations, and colors for the
periods of the Geologic Time Scale. Based on The ICS International
Chronostratigraphic Chart (v2024/12), by Cohen, Finney, Gibbard, and Fan.

datasets

Extends the functionality of other plotting packages (notably 'ggplot2')
to help facilitate the plotting of data over long time intervals, including,
but not limited to, geological, evolutionary, and ecological data. The
primary goal of 'deeptime' is to enable users to add highly customizable
timescales to their visualizations. Other functions are also included to
assist with other areas of deep time visualization.

William Gearty

deeptime

Plotting Tools for Anyone Working in Deep Time

periods function

A data frame with 22 rows and 5 variables:<dl>
<dt>name</dt>
<dd>period name</dd><dt>max_age</dt>
<dd>maximum age, in millions of years</dd><dt>min_age</dt>
<dd>minimum age, in millions of years</dd><dt>abbr</dt>
<dd>period name abbreviations</dd><dt>color</dt>
<dd>the colors for each period, according to the Commission for
the Geological Map of the World</dd><dt>lab_color</dt>
<dd>the label colors for each period, either white or black,
whichever has better contrast with the background color, based on
<a href="https://www.itu.int/rec/R-REC-BT.601-7-201103-I/en">recommendations by the International Telecommunication Union</a></dd>
</dl>

Format

Period data from the International Commission on Stratigraphy (v2024/12) — periods

A data frame with 22 rows and 5 variables:<dl>
<dt>name</dt>
<dd>period name</dd>

<dt>max_age</dt>
<dd>maximum age, in millions of years</dd>

<dt>min_age</dt>
<dd>minimum age, in millions of years</dd>

<dt>abbr</dt>
<dd>period name abbreviations</dd>

<dt>color</dt>
<dd>the colors for each period, according to the Commission for
the Geological Map of the World</dd>

<dt>lab_color</dt>
<dd>the label colors for each period, either white or black,
whichever has better contrast with the background color, based on
<a href='https://www.itu.int/rec/R-REC-BT.601-7-201103-I/en'>recommendations by the International Telecommunication Union</a></dd>


</dl>

periods: Period data from the International Commission on Stratigraphy (v2024/12)

Description

Usage

Arguments

Format

See Also