C. Diaz-granados et al., AMS radiocarbon dates for charcoal from three Missouri pictographs and their associated iconography, AM ANTIQUIT, 66(3), 2001, pp. 481-492
The report presents four radiocarbon dates of charcoal pigments from Pictur
e Cave, a site located in a remote wooded area in east-central Missouri. Ca
rbon from charcoal pigments was extracted from three rock drawings on the w
all of this cave. The four pigment samples contained sufficient carbon for
accelerator mass spectrometric radiocarbon analysis. These black pigments s
amples (red and white paints are also present in the cave) yielded dates th
at place their affiliated motifs in a time-frame associated with Cahokia ca
. 950 years ago. The dates are somewhat earlier than expected. We discuss t
he dates in connection with the iconography of three motif panels tested.