168 samples of archaeological obsidian from 12 Halaf-LC3 sites in Mesopotamia and the Arabian Gulf analyzed by LA-HR-ICP-MS
These sites match many sources in eastern Anatolia and Armenia and varieties increase in the Ubaid and LC2 periods
Matches show preponderance of obsidian from newly studied Sıcaksu outcrop of Nemrut Dağ across periods and regions treated
Data suggests Nemrut was major economic actor in interaction networks of pre-state societies in ancient Near East