Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/3236
Título: A first last glacial maximum stalagmite record from southern Portugal
Autor: Veiga-Pires, C.
Ghaleb, Bassam
Hélie, Jean-François
Moura, Delminda
Luis, Joaquim
Hillaire-Marcel, C.
Data: 2011
Editora: XVIII INQUA-Congress
Citação: Veiga-Pires, Cristina Carvalho; Ghaleb, Bassam; Hélie, Jean-François; Moura, Delminda; Luis, Joaquim; Hillaire-Marcel, Claude. A first Last Glacial Maximum stalagmite record from southern Portugal, Trabalho apresentado em INQUA 2011, In INQUA2011, Bern, Swizerland, 2011.
Resumo: A newly launched research program permitted the sampling of speleothem deposits in the Algarve area (Southern Portugal). Unfortunately, this stalagmite yielded very small amounts of U (~ 20 ppb), making the setting of a U-series chronology difficult due to both the relative importance of a detrital contaminating fraction and the lack of precision on overall 230Th measurements. Nevertheless, based on the top and most recent sample, we extracted a first order estimate for the 230Th/232Th ratio of the contaminating fraction and for its 234U/232Th and 238U/232Th ratios as well, assuming a secular equilibrium between 234U and 238U in this fraction.
Peer review: no
URI: http://hdl.handle.net/10400.1/3236
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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