. . _:b670485750 . _:b670468462 . _:b670485750 . "glacial abrasion"@en . "envoPolar" . _:b670468462 . "abrasion" . . "glacial scouring" . _:b670468462 . _:b670485750 . "A glacial abrasion process is an erosional process during which debris in the basal ice scrapes along the bed, polishing and gouging the underlying rocks, similar to sandpaper on wood." . _:b670468462 . _:b670468462 . _:b670485750 . "scouring" . _:b670485750 .