Firing temperature determination and thermoluminescence dating of a brick with cuneiform characters found in the ruins of Ancient Babylon

Este artigo tem por objetivo estudar um tijolo com inscrições em caracteres cuneiformes cujas sentenças estão praticamente completas. Estudos tipológicos correspondentes aos relatos históricos sugerem que o tijolo foi manufaturado no século VI a.C., durante a dinastia de Nabucodonosor II, grande monarca da Babilônia. A amostra foi estudada através da difração de raios X (DRX), ressonância paramagnética de elétron (RPE), termoluminescência (TL) e técnicas de análise por ativação instrumental com nêutrons (AAIN). Os resultados demonstraram que o tijolo tem 2350 anos de idade (± 40) e queima menor que 400o C.This paper aims to study a brick with inscriptions in cuneiform characters in  which the sentences are almost complete. Typological studies in agreement with historical records suggest that the tablet was manufactured in the 6th century  BCE during the dynasty of Nebuchadnezzar II, Great King of Babylon. The  sample was studied by X-ray diffraction analysis (XRD), electron paramagnetic resonance (EPR), thermoluminescence (TL), and instrumental neutron activation analysis (INAA) techniques. The results showed that the brick is 2350 years old (± 40) and its firing temperature was lower than 400 °C

Upper Pleistocene deposits of the Comprida Island (São Paulo State) dated by thermoluminescence method

ABSTRACT The Cananéia (Upper Pleistocene) and the Comprida Island (Holocene) formations, outcropping in the Comprida island (SP) have been mapped using geomorphological and lithological criteria. Only one sample of the Cananéia Formation, collected in the homonymous island in front of the Comprida Island, was beyond the limit of the standard radiocarbon method. But since the publication of the geological map of the area in 1978, there has been some doubt on the real occurrence of Pleistocene deposits in southern extremity of Comprida Island. This paper deals with the results of thermoluminescence (TL) ages of eight samples from Comprida Island, which corroborate the Pleistocene age assumed during mapping surveys of these deposits. On the other hand, possible interpretations of the obtained ages, in relation to their depositional environments and related northern hemisphere Quaternary glaciations, are presented

Dating stalagmite from Caverna do Diabo (Devil'S Cave) by TL and EPR techniques

A cylindrical fragment of stalagmite from Caverna do Diabo, State of Sao Paulo, Brazil, has been studied and dated by thermoluminescence and electron paramagnetic resonance techniques. The thermoluminescence glow curves of stalagmite samples and subsequently gamma irradiated, have shown rise of three peaks at 135, 180 and 265 degrees C. From electron paramagnetic resonance spectra of stalagmite was possible to clearly identify three paramagnetic centers in the g = 2.0 region: Centers I, II and III are due to, CO3- and CO33-, respectively. The additive method was applied to calculate the accumulated dose using thermoluminescence peak at 265 degrees C and the electron paramagnetic resonance signal at g = 1.9973 of CO2- radical. The ages of the different slices of stalagmite were determined from the D-ac-values and D-an-value, obtaining an average of 86410 for central slice, 53421 for second slice, 31490 for third slice and 46390 years B.P. for the central region of upper end.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Sao Paulo, Inst Fis, Rua Matao,187 Cidade Univ, BR-05508090 Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Dept Ciencias Mar, Rua Doutor Carvalho de Mendonca 144, BR-11070100 Santos, SP, BrazilIPEN CNEN SP, Inst Pesquisas Energet & Nucl, Av Prof Lineu Prestes,2242 Cidade Univ, BR-05508000 Sao Paulo, SP, BrazilUniv Nacl San Agustin, Fac Ciencias Nat & Formales, Escuela Profes Fis, Av Independencia S-N, Arequipa, PeruUniv Sao Paulo, Escola Politecn, Dept Engn Met & Mat, Av Prof Mello Moraes 2463, BR-05508030 Sao Paulo, SP, BrazilDepartamento de Ciências do Mar, Universidade Federal de São Paulo, Rua Doutor Carvalho de Mendonça, 144, 11070-100 Santos, SP, BrazilFAPESP: 2014/03085-0CAPES: BEX-9612130Web of Scienc

Grupo de Estudos Arqueométricos do IPEN-CNEN/SP

Este trabalho apresenta uma breve resenha dos procedimentos analíticos, assim como, a interpretação dos dados por meio de métodos estatísticos, usados pelo Grupo de Estudos Arqueométricos do IPEN-CNEN/SP.  O Grupo visa a formação de recursos humanos por meio de Dissertações de Mestrado, Teses de Doutorado, Pós-Doutorado e alunos de Iniciação Científica. Os trabalhos são realizados em colaboração com arqueólogos e geólogos de diferentes regiões nacionais e internacionais.     

Comparison of INAA elemental composition data between Lago Grande and Osvaldo archaeological sites in the central Amazon: a first perspective

In this work, 50 ceramic fragments from the Lago Grande and 30 from the Osvaldo archaeological site were compared to assess elemental similarities. The aim is to perform a preliminary comparison between the sites, which are located in the central Amazon, Brazil. The analytical technique employed to obtain the ceramics elemental composition was instrumental neutron activation analysis (INAA). The data set obtained was explored by the multivariate statistical techniques of cluster, principal component and discriminant analysis. The analyzed elements were: Na, Lu, U, Yb, La, Th, Cr, Cs, Sc, Fe, Eu, Ce and Hf. The results showed the existence of at least two compositional groups for Lago Grande and Osvaldo. Each compositional group of Osvaldo archaeological site matches with one group of Lago Grande. Correlated with the archaeological background, the results suggest commercial or cultural exchange in the region, which is an indicative of socio-cultural interactions between those sites.Sao Paulo Research Foundation-FAPESP-Brazil [2010/07659-0

Dating and determination of firing temperature of ancient potteries from São Paulo II archaeological site, Brazil by TL and EPR techniques

Pottery fragments from São Paulo II (SPII) archaeological site were dated by means of thermoluminescence (TL) and electron paramagnetic resonance (EPR). EPR was used to study the firing temperature using the iron signal (Fe3+) as a firing temperature reference. the ages of the samples were found to be between 793 +/- 102 and 1184 +/- 142 a.C. the firing temperature of ceramics was found to be around 600-650 degrees C. Our study, based on the combination of EPR and TL techniques to study SPII archaeological site pottery, will be helpful for archaeologists in Brazil. With the results of this research, we can understand the chronology and determine areas of dispersion and density of archaeological occupation. (C) 2014 Elsevier Masson SAS. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNEN SP, IPEN, BR-05508000 São Paulo, SP, BrazilUniversidade Federal de São Paulo, Dept Ciencias Mar, BR-11030400 Santos, SP, BrazilUniv São Paulo, Inst Fis, BR-05508090 São Paulo, SP, BrazilUniv São Paulo, Museu Arqueol & Etnol, BR-05508900 São Paulo, SP, BrazilUniversidade Federal de São Paulo, Dept Ciencias Mar, BR-11030400 Santos, SP, BrazilWeb of Scienc

TL dating of pottery fragments from four archaeological sites in Taquari Valley, Brazil

Sixty-three pottery fragments from four archaeological sites, numbered RST110, RST101, RST114 and RST114, in the Taquari Valley, vicinity of the city of Lajeado, Rio Grande do Sul state, southern Brazil, have been dated by the thermoluminescence method. Some of them from RST110 and RST101 are as old as 1400-1200 years, whereas those from RST114 and RST107 are younger than 800 years. This result indicates that RST101 and RST110 were peopled earlier than RST114 and RST107. The recent dates found are 302, 295 and 146 years and they are possible, since the first German immigrants who arrived in this region encountered Tupi-Guarani Indians still living there. One interesting result refers to the glow curves of quartz grains RST110, RST101 and RST114 that differ from the glow curves of RST107 quartz grains.FAPESPFAPESPCNPqCNP