A first last glacial maximum stalagmite record from southern Portugal

Veiga-Pires, C.; Ghaleb, Bassam; Hélie, Jean-François; Moura, Delminda; Luis, Joaquim; Hillaire-Marcel, C.

http://hdl.handle.net/10400.1/3236

Utilize este identificador para referenciar este registo.

Nome:	Descrição:	Tamanho:	Formato:
Veiga-Pires2011Inqua.pdf		2.66 MB	Adobe PDF	Ver/Abrir

Contacte-nos

Autores

Resumo(s)

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.

URI

http://hdl.handle.net/10400.1/3236

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.

Editora

XVIII INQUA-Congress

Coleções

FCT2-Artigos (em revistas ou actas indexadas)
CIM2-Artigos (em revistas ou actas indexadas)

Ver registo completo