Recent investigations carried out on the Talos Dome ICE core (TALDICE) revealed the presence of a local fraction of mineral dust entrapped in the ice [1-4]. Several evidences point to the ice-free areas of Victoria Land as possible sources. Here the elemental composition of 40 samples of mineral sediments collected in correspondence of ice-free areas of the Victoria Land is presented [5]. The geochemistry of samples was determined by Instrumental Neutron Activation Analyses (INAA), which allowed quantifying the concentration of 36 elements, spanning from major to trace elements. Two different sample irradiations and 5 data acquisitions were necessary to measure the maximum number of elements. Geochemical results and principal components analyses suggest that the most discriminating elements are the rare earth elements (REE) and incompatible/compatible ones in respect to iron, in accordance with the different lithological composition of the samples. Evidences of chemical weathering were also recognized despite the extremely cold and dry climate of these areas. The characterization of the Antarctic potential source areas of atmospheric dust is the first step in order to identify the active source areas in respect to Talos Dome and to reconstruct the atmospheric trajectories followed by air masses in the different climatic periods.

Baccolo, G., Baroni, C., Clemenza, M., Delmonte, B., Maggi, V., Motta, A., et al. (2014). ELEMENTAL CHARACTERIZATION OF POTENTIAL ATMOSPHERIC DUST SOURCES OF VICTORIA LAND (ANTARCTICA, ROSS SEA SECTOR) BY NEUTRON ACTIVATION. In DUST 2014.

ELEMENTAL CHARACTERIZATION OF POTENTIAL ATMOSPHERIC DUST SOURCES OF VICTORIA LAND (ANTARCTICA, ROSS SEA SECTOR) BY NEUTRON ACTIVATION

BACCOLO, GIOVANNI;
2014-01-01

Abstract

Recent investigations carried out on the Talos Dome ICE core (TALDICE) revealed the presence of a local fraction of mineral dust entrapped in the ice [1-4]. Several evidences point to the ice-free areas of Victoria Land as possible sources. Here the elemental composition of 40 samples of mineral sediments collected in correspondence of ice-free areas of the Victoria Land is presented [5]. The geochemistry of samples was determined by Instrumental Neutron Activation Analyses (INAA), which allowed quantifying the concentration of 36 elements, spanning from major to trace elements. Two different sample irradiations and 5 data acquisitions were necessary to measure the maximum number of elements. Geochemical results and principal components analyses suggest that the most discriminating elements are the rare earth elements (REE) and incompatible/compatible ones in respect to iron, in accordance with the different lithological composition of the samples. Evidences of chemical weathering were also recognized despite the extremely cold and dry climate of these areas. The characterization of the Antarctic potential source areas of atmospheric dust is the first step in order to identify the active source areas in respect to Talos Dome and to reconstruct the atmospheric trajectories followed by air masses in the different climatic periods.
2014
Baccolo, G., Baroni, C., Clemenza, M., Delmonte, B., Maggi, V., Motta, A., et al. (2014). ELEMENTAL CHARACTERIZATION OF POTENTIAL ATMOSPHERIC DUST SOURCES OF VICTORIA LAND (ANTARCTICA, ROSS SEA SECTOR) BY NEUTRON ACTIVATION. In DUST 2014.
File in questo prodotto:
File Dimensione Formato  
GR5_Baccolo.docx

non disponibili

Descrizione: Abstract
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 14.81 kB
Formato Microsoft Word XML
14.81 kB Microsoft Word XML   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/975557