ruiniform
/ruːˈɪnɪfɔːm/Geology
adjective
Presenting the appearance of ruins; (of marble or other decorative stone) having distinctive markings likened to the outline of ruined buildings.
Origin
Early 19th century; earliest use found in Robert Jameson (1774–1854), geologist and natural historian. From ruin + -iform, after French ruiniforme or its model German ruinenförmig.