Extended Data Fig. 9: Bladelet-like chert piece, ventral face, use-wear after removing residues (no. 129).
From: Innovative ochre processing and tool use in China 40,000 years ago
(1) central part of the active edge with micro-scarring and well-developed polish (SEM-LFD). (2) detail from image 1 (OM 10x-lens). (3–5) details of image 2 (ON 20x-lens, SEM-LFD and OM 50x-lens respectively); (6) mosaic of the distal portion (SEM-LFD). (7) detail of the area interpreted as the limit of the hafted area, with some binding scars and no polish. (8, 9) intensively polished areas covered with fine transverse striations (SEM LFD and SEM-BSD).
