scoriation

A sloppily cut groove, furrow, or trench, characterised by the presence of refuse material from which it was cut.

"The tracks of his father's foot were gone. Where they had been were now long, watercloudy scoriations resembling the sporadic course of a Lilliputian mowing machine." ~William Faulkner

An anthropological term used to describe grooves or other similar markings on bullets exclusively. Scoriation is a joining of "scoring" and "striation."

aphetic form of excoriation