lithic

Of or relating to stone — specifically, in archaeology, describing the stone tools, flakes, and debitage produced by human knapping. A lithic scatter is a concentration of worked stone on the ground surface, evidence that someone sat in that spot and made tools. In geology, lithic simply means composed of or pertaining to rock. The word connects the human and the geological: the first technology was lithic, and we named our earliest ages after the stone we shaped.