Seh Gabi: Chalcolithic Echoes

Seh Gabi sits in the long arc of Chalcolithic Iran: a landscape where earlier Neolithic village lifeways matured into more nucleated communities with new craft practices and social differentiation. Radiocarbon dates from the site span roughly 4840–3792 BCE, placing Seh Gabi in a period of regional experimentation with metallurgy, intensified exchange, and distinctive ceramic traditions associated with Chalcolithic Iran.

Archaeological data indicates settlement stratigraphy with domestic architecture and material culture that echoes contemporaneous sites across the Iranian plateau and Zagros foothills. The pottery styles, chipped stone and ground stone toolkits, and features interpreted as storage and craft areas suggest a community engaged in mixed farming, animal herding, and increasingly specialized craft production. Limited large-scale monumental architecture suggests community organization remained village-scale rather than state-level.

While material culture ties Seh Gabi to broad Chalcolithic networks, the human story is illuminated further by ancient DNA. Genetic signals from a small set of individuals provide a nascent window on ancestry and mobility at this formative horizon. Given the small sample count (five individuals), any narrative about population movements or cultural transmission must remain cautious and framed as provisional.

Five genomes sampled from Seh Gabi (sample count = 5) span the site's Chalcolithic occupation. Y-chromosome results include haplogroups J (1) and G (1); mitochondrial lineages include H29, U, K, I1c, and U7a. These markers align with a broader Near Eastern genetic landscape in which haplogroups J and G are commonly observed among populations of the Iranian plateau, Anatolia, and the Caucasus, while the mitochondrial diversity reflects both local maternal continuity and connections to neighboring regions.

Archaeological and genetic integration suggests that Seh Gabi’s inhabitants carried a mixture of lineages typical of Chalcolithic Iran: paternal markers linked to long-standing Near Eastern male lineages, and varied maternal haplotypes that point to wider female-mediated connections across the plateau and beyond. The presence of U7a and K, for example, resonates with regional maternal lineages documented in ancient and modern populations of western Iran and adjacent areas.

Importantly, the small sample size limits strong conclusions. With only five genomes, population-level statistics are underpowered; observed haplogroups may reflect family-level structure, a few interments, or short-term mobility rather than the full genetic profile of the community. Future sampling of additional individuals and comparative analysis with contemporaneous Chalcolithic and Neolithic sites will be essential to test hypotheses of continuity, admixture, and migration.