Moss et al. 2023. Sites and communities/areas with obsidian samples used in this study.

Why did Chaco Canyon residents start using distant obsidian around AD 700 when closer sources existed? XRF analysis by Moss et al. shows how social ties shaped trade. doi.org/10.1080/0023...
#Archaeology #ChacoCanyon #ObsidianAnalysis #AncientTrade #NewMexico