Dendrogeomorphology is the application of tree-ring analysis for the dating of geomorphic processes. Although defined elsewhere, Shroder (1978, 1980) provided the foundation and methodologies for dendrogeomorphology that continue to underpin the discipline more than 30 years after the publication of his research papers. His process-event-response methodology and development of a semi-quantitative index number are techniques employed or discussed in virtually every recent paper within the field of dendrogeomorphology.