Study of the Firing Temperature of Marajoara Archaeological Ceramics by EPR Associated to INAA Data  

作　　者：Kelly P. Nunes Casimiro S. Munita Rosimeiri G. Toyota Paulo T.M. Oliveira Nilo F. Cano Denise Schaan Oswaldo Baffa Luiz C. Oliveira Carlos A. Brunello Eduardo G. Neves Ce1ia C. Demartini 

机构地区：[1]Nuclear and Energy Research Institute, University of Sao Paulo, Sao Paulo 5508-000, Brazil [2]Department of Anthropology, Basic Campus 1, Federal University of Par6, Beldm 66075-110, Brazil [3]Magnetic Resonance Laboratory, Department of Physics, University of Sao Paulo, Ribeirao Preto 14040-901, Brazil [4]Archaeology and Ethnology Museum, Department of Archaeology, University of Sao Paulo, Sao Paulo 05508-900, Brazil

出　　处：《Journal of Environmental Science and Engineering(A)》2012年第9期1108-1116,共9页环境科学与工程（A）

摘　　要：The Marajó Island is the largest island of the Marajō archipelago, located in the north of Brazil. In this region, at the end of 19th century, it was identified an archaeological society named Marajora, which occupied the island from 400 to 1,350 AD. It was characterized by a ceramic style recognized by its beauty and exuberance. Until this moment, the physical and chemical analysis studies in this ceramics are scarce and this kind of studies may help archaeological studies performed in the island. With this purpose, this work presents a preliminary study of the firing temperature in the ceramics. For that, the elementary concentrations of 109 samples from Museu de Archaeology and Ethnology Museum of the University of Sáo Paulo and samples collected in the Marajá Island were studied. The samples were analyzed using instrumental neutron activation analysis in which the elemental concentration of Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn were determined. The interpretation of the results was made using multivariate statistical approaches and showed the existence of three chemical groups. Some samples of each cluster were chosen for the determination of their firing temperatures by electron paramagnetic resonance, in order to verify if different firing temperatures was associated with different elemental groups of ceramic samples. The results showed that there are no statistical differences in the firing temperature between the samples from Archaeology and Ethnology Museum and the contemporary samples of the Marajá Island.

关 键 词：Maraj6 island archaeological ceramics INAA EPR multivariate statistical analysis. 

分 类 号：O65[理学—分析化学] TD861.1[理学—化学]