Carved in stone: Experimental criteria for identifying Paleolithic bas-relief production techniques and sculptors’ expertise
Fig 5
Photographs (A-C) and RTI images (A’-C’) comparing surface modifications produced by (A, A’) scraping with a blade; (B, B’) scraping with an endscraper on a surface previously pecked with a pick; (C, C’) polishing with a cobble.
Textural differences between B and C may be difficult to distinguish with the naked eye. RTI images, however, show that larger pores and depressions are preserved on surfaces subjected to polishing alone.