Ancient pottery fragments from the Tunata-hill site in Churajon archaeological complex, Arequipa, Peru, were dated by means of luminescence techniques such as thermoluminescence (TL) and optically stimulated luminescence (OSL) in order to provide absolute chronology. For TL, additive and regenerative methods were performed. For OSL a regenerative method was carried out for IRSL dating. A rigorous description of the study area and its context has been made. The ages of the samples were found to be between 0.50 ± 0.06 ky and 0.49 ± 0.03 ky for TL methods, and 0.49 ± 0.02 ky for OSL methods. On average, the estimated age by TL and OSL techniques is 490 ± 70 yr (1600 AD and 1460 AD). This means that Churajon ceramics under study would belong to the Late periods which corresponds to the Inca region, and the North sub-region of the Late Churajon phase, and the beginning of European colonization in Peru. X-ray fluorescence technique (XRF) analysis has shown the main presence of Fe (39.5%), Si (30.0%), and Al (10.4%) in fine pottery powder. Furthermore, the electron paramagnetic resonance (EPR) technique was used to study the firing temperature using the iron signal (Fe3+) as a firing temperature reference. The firing temperature of ceramics was found to be around 550 ± 50 °C.
|Journal||Radiation Physics and Chemistry|
|State||Published - Mar 2023|
Bibliographical noteFunding Information:
This work was carried out with financial support from UNSA-INVESTIGA , Peru (Process number IBAIB-02-2018-UNSA ). C.D. Gonzales-Lorenzo kindly acknowledges the financial support from CONCYTEC through its executing unit PROCIENCIA (Contract N° PE501080404-2022-PROCIENCIA , financial scheme E067-2022-04). Besides, the authors kindly acknowledge Prof. Nilo Cano for his important suggestions in the production of this work.
© 2022 Elsevier Ltd
- Firing temperature