Teton Canyon is the largest watershed draining the west slope of the Grand Teton Range in Wyoming and Idaho. The canyon historically has been covered in glaciers throughout the late Quaternary period, and glacial processes of erosion and deposition have extensively modified its topography. The Teton Range forms an uplifted fault-block mountain range within the central Rocky Mountain fold and thrust belt in western Wyoming. Eastward compression and thrusting have helped to form an asymmetrically shaped mountain range, with a steep eastern slope that has exposed ancient crystalline bedrock, while the gentler west slope retains much of its sedimentary rock cover. Teton Canyon, the area of interest in my study is the most deeply carved valley on the west slope of the Tetons and preserves the best record of glacial deposits in the area, and contains soils and boulders derived from crystalline basement exposed by glacial erosion. These materials weather rapidly, and during my research, I collected data from soil development and surface boulder weathering in order to estimate the age of associated glacial deposits. I assessed the weathering data to determine the relative age of each moraine left by deposition from prior glaciations of the late Quaternary period, and then used the data to construct a GIS map of the glacial deposits. This map, combined with basal shear stress calculations was used to reconstruct the extent of glaciers in Teton Canyon during each glacial advance.