COMPUTED TOMOGRAPHY AND COMPUTED RADIOGRAPHY OF LATE BRONZE AGE CREMATION URNS FROM DENMARK: AN INTERDISCIPLINARY ATTEMPT TO DEVELOP METHODS APPLIED IN BIOARCHAEOLOGICAL CREMATION RESEARCH

To improve the methods used to study prehistoric cremation rituals, cremation urns from the Danish Late Bronze Age were examined using computed tomography and computed radiography (digital X‐ray). During micro‐excavation, the digital images were used as a registration tool. Our results suggest that osteological ageing and sexing are more accurate when combining CT images with excavated remains. Digital volume rendering further enables a compromised estimation of the original cremation weight. Micro‐excavation is clearly a primary cause of bone fragmentation. Cremated remains affected by lower cremation intensity show markedly poorer preservation and recovery than do white calcined fragments. Thus post‐excavation estimations of cremation intensity are systematically biased.     

COAL AND CREMATION AT THE TSCHUDI BURN,CHAN CHAN,NORTHERN PERU*

Analyses of a 20–30 cm thick, completely combusted ash at the 25 × 70 m Tschudi burn at Chan Chan, northern Perú, contain 52–55 wt% SiO₂, 180–210 ppm zirconium and are consistent with coal ash. Soil geochemistry across the burn showed elevated calcium and phosphorus content, possible evidence for reported human cremation. A calcined, 5 g, 4.5 cm skull fragment recovered from the burn was confirmed as human by protein radioimmunoassay (pRIA). X‐ray diffraction showed that the bone had been heated to 520°C. The burn took place c. ad 1312–1438 based on interpretation of a ¹⁴C date on carbonized plant tinder.