Sardinia Chalcolithic Mosaic

Sardinia in the third millennium BCE was a place of weathered limestone and coastal wind, where long-established farming communities met new cultural currents. Archaeological data from sites such as Anghelu Ruju (near Alghero), Filigosa (Macomer), S'isteridolzu (Ossi), Sa Ucca de su Tintirriolu, and Cannas di Sotto (Carbonia) indicate continued use of communal tombs, domestic settlements, and material exchange across the island.

Material culture across these sites shows a Chalcolithic horizon informed by local Neolithic traditions and emerging copper-age practices. Ceramic forms, burial architecture, and tool assemblages suggest regional variability rather than a single uniform culture. Limited evidence points to increased mobility and contacts with the broader central Mediterranean, but the archaeological record alone cannot fully resolve the scale or direction of these interactions.

Genetic data from eight individuals provide a complementary window into origins: they hint at a dominant heritage tied to earlier Neolithic farmer populations on the island, with traces of lineages that may reflect incoming people or long-distance kinship ties. Because sample numbers are small, these genetic signals are best seen as provisional glimpses of a dynamic island landscape rather than definitive population statements.

The genetic dataset for Italy_Sardinia_C comprises eight individuals dated between 3371 and 2140 BCE. Y-chromosome assignments include G (2), H (1), I (1), R (1), and E (1); mitochondrial lineages include K (2), T (1), H1k (1), H (1), and H1 (1). These markers sketch a mosaic: mtDNA types K and H are common among European Neolithic farmers, consistent with archaeological evidence for continuity of early farming ancestry on Sardinia.

The presence of a single R Y-haplogroup could reflect an incursion of lineages more commonly associated elsewhere in Bronze Age Europe, but a single R carrier among six assigned Y profiles (and eight total samples) is insufficient to claim broad population change. Likewise, G and I Y-lineages are often associated with long-standing European farming and hunter-fisher-forager substrata; E and H suggest Mediterranean connections and the persistence of diverse paternal lines.

Because fewer than ten genomes inform these patterns, all interpretations must be treated as preliminary. The genetic picture aligns with modest continuity from earlier Sardinian Neolithic ancestry alongside punctuated inputs of diverse paternal lineages. Further sampling across time and space on the island will be essential to test hypotheses about migration, sex-biased gene flow, and the relationship between genetics and the archaeological record.