TL, OSL and C-14 dating results of the sediments and bricks from mummified nuns' grave

• Autor(a) principal: Tudela,Diego R.G.
• Data de Publicação: 2012
• Outros Autores: Tatumi,Sonia H., Yee,Márcio, Brito,Silvio L.M., Morais,José L., Morais,Daisy de, Piedade,Silvia C., Munita,Casimiro S.P., Hazenfratz,Roberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Anais da Academia Brasileira de Ciências (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200002
• topic: dating; Thermoluminescence (TL); Optical stimulated Luminescence (OSL); Mummified Nuns; Mosteiro da "Luz"

This paper presents the results of TL and OSL dating of soil and fragments of bricks from a grave, which was occupied by two mummified nuns, found at "Luz" Monastery, located in the state of São Paulo, Brazil. The TL and OSL ages were compared to C-14 dating ones obtained from bone collagens of the mummies. The majority of the ages is related to the eighteenth century. The gamma-ray spectroscopy was used to evaluate natural radioisotope concentrations in the samples, and by using these concentrations the annual dose rates, from 3.0 to 5.3 Gy/kyr, were obtained. Neutron activation analysis was performed and the radioisotope contents results are in agreement with those obtained by gamma-ray spectroscopy. The contents of U, Th and Ce elements were higher than those found in usual sediments.