Figure 7
SEM–EDS spectra of bitumen residues identified on samples 1 (A), 2 (B, C), 3 (D), 4 (E), and 5 (F). Samples 1–4 are from Saradj-Chuko grotto and sample 5 is from Mezmaiskaya cave.
Figure 7 | Scientific Reports
SEM–EDS spectra of bitumen residues identified on samples 1 (A), 2 (B, C), 3 (D), 4 (E), and 5 (F). Samples 1–4 are from Saradj-Chuko grotto and sample 5 is from Mezmaiskaya cave.
