s="fu">BchronCalibrate</span><span class="op">(</span></span>
<span>  <span class="va">ages</span>,</span>
<span>  <span class="va">ageSds</span>,</span>
<span>  calCurves <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"intcal20"</span>, <span class="fu"><a href="https://rdrr.io/r/base/length.html" class="external-link">length</a></span><span class="op">(</span><span class="va">ages</span><spa