in the largest 25% of the size distribution. Joint likelihoods that combine the results of both species estimated moraine ages of AD 1938, 1917, and 1816. Ages predicted by Rhizocarpon alone were older than those of P. pubescens. Predicted ages are geologically
2014
[b3] Dept. of Geological Sciences and INSTAAR, Univ. of Colorado, Boulder, Etats-Unis