ABSTRACT
Smooth rounded forms of various types cut into bedrock by the combined erosive power of ice, meltwater and subglacial sediment under high pressure (Figure P.1). Glacially smoothed bedrock displaying a variety of p-forms, including channels, that are the product of both glacial abrasion and subglacial water erosion, Columbia Glacier, Prince William Sound, Alaska (July 1989). https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315373157/95d5ad9e-a71d-4f11-a609-2c025b95638b/content/figp_1.jpg"/>
