equus

84 radiocarbon determinations collated by Dale Guthrie, R. related to
Equus (horse) in Yukon and Alaska. Samples
are restricted to those between 25,000--6000 \({}^{14}\)C yrs BP. 
Reference: 
Dale Guthrie, R. New carbon dates link climatic change with human colonization
and Pleistocene extinctions. Nature 441, 207--209 (2006).
https://doi.org/10.1038/nature04604

datasets

Performs Bayesian non-parametric calibration of multiple related radiocarbon determinations, and summarises the calendar age information to plot their joint calendar age density (see Heaton (2022) <doi:10.1111/rssc.12599>).
Also models the occurrence of radiocarbon samples as a variable-rate (inhomogeneous) Poisson process, plotting the posterior estimate for the occurrence rate of the samples over calendar time, and providing information about potential change points.

Timothy J Heaton

carbondate

Calibration and Summarisation of Radiocarbon Dates

Sara Al-assam

equus function

<div class="section" id="equus">
<h3><code>equus</code></h3>
A data frame with 84 rows and 7 columns:<dl>
<dt>lab_code</dt>
<dd>The sample code for the \({}^{14}\)C laboratory</dd><dt>site_code</dt>
<dd>The site/museum code</dd><dt>location</dt>
<dd>The location of the sample</dd><dt>c14_age</dt>
<dd>The observed \({}^{14}\)C ages of the samples (in \({}^{14}\)C yr BP)</dd><dt>c14_sig</dt>
<dd>The uncertainty in the observed \({}^{14}\)C ages reported by the radiocarbon laboratory</dd><dt>f14c</dt>
<dd>The observed F\({}^{14}\)C concentrations</dd><dt>f14c_sig</dt>
<dd>The uncertainty in the observed F\({}^{14}\)C concentrations reported by the radiocarbon laboratory</dd>
</dl></div>

Format

84 radiocarbon determinations collated by Dale Guthrie, R. related to
Equus (horse) in Yukon and Alaska. Samples
are restricted to those between 25,000--6000 \({}^{14}\)C yrs BP. 
Reference: 
Dale Guthrie, R. New carbon dates link climatic change with human colonization
and Pleistocene extinctions. Nature 441, 207--209 (2006).
https://doi.org/10.1038/nature04604

Example real-life data - Equus in Yukon and Alaska — equus

<div class='section' id='equus'>
<h3><code>equus</code></h3>


A data frame with 84 rows and 7 columns:<dl>
<dt>lab_code</dt>
<dd>The sample code for the \({}^{14}\)C laboratory</dd>

<dt>site_code</dt>
<dd>The site/museum code</dd>

<dt>location</dt>
<dd>The location of the sample</dd>

<dt>c14_age</dt>
<dd>The observed \({}^{14}\)C ages of the samples (in \({}^{14}\)C yr BP)</dd>

<dt>c14_sig</dt>
<dd>The uncertainty in the observed \({}^{14}\)C ages reported by the radiocarbon laboratory</dd>

<dt>f14c</dt>
<dd>The observed F\({}^{14}\)C concentrations</dd>

<dt>f14c_sig</dt>
<dd>The uncertainty in the observed F\({}^{14}\)C concentrations reported by the radiocarbon laboratory</dd>


</dl>

</div>

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equus: Example real-life data - Equus in Yukon and Alaska

Description

Usage

Arguments

Format

`equus`