Cascade Phase Lithic Technology: An Example from the Lower Snake River

Abstract

Chipped stone artifact data from several Cascade phase sites located on the lower Snake River are analyzed to evaluate lithic technological characteristics of the early Cascade phase. Interpretations based upon the stone tool assemblages suggest traditional generalizations about the early Cascade phase require some rethinking. Specifically, tool type and debitage type analysis indicate that early Cascade phase settlement organization was not necessarily oriented to a local riverine setting, rather, early Cascade phase populations were highly mobile and visited major river drainages during only part of an annual cycle. Analysis of lithic raw material shows that early Cascade phase populations prefer nonlocally available cryptocrystalline cherts and fine grained basalt for production of refined tools such as projectile points and that locally available coarse grained basalts were primarily used to make nonportable situational gear.