Dating stalagmite from Caverna do Diabo (Devil´S Cave) by TL and EPR techniques
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2016
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Anais da Academia Brasileira de Ciências
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A cylindrical fragment of stalagmite from Caverna do Diabo, State of São 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 °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 ,
and , respectively. The additive method was applied to calculate the accumulated dose using
thermoluminescence peak at 265 °C and the electron paramagnetic resonance signal at g = 1.9973 of CO-
2
radical. The ages of the different slices of stalagmite were determined from the Dac- values and Dan- 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.
Como referenciar
WATANABE, SHIGUEO; CANO, NILO F.; RAO, T.K.G.; SILVA-CARRERA, BETZABEL N.; CARMO, LUCAS S.; QUINA, ANTONIO J. A. DE; GENNARI, ROSELI F.; MUNITA, CASIMIRO S.; AYALA-ARENAS, JORGE S.; FERNANDES, BRUNO G. Dating stalagmite from Caverna do Diabo (Devil´S Cave) by TL and EPR techniques. Anais da Academia Brasileira de Ciências, v. 88, n. 4, p. 2137-2142, 2016. DOI: 10.1590/0001-3765201620150755. Disponível em: http://repositorio.ipen.br/handle/123456789/27165. Acesso em: 25 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.