Zr and Hf are two elements having same ionic charge and similar ionic size at a given coordination number. Despite the Zr/Hf ratio is considered to be quite constant in meteorites and lithospheric rocks, seawaters collected from the surface down to varying depths of several Pacific Ocean stations reveal that the Zr/Hf ratio increases by one order of magnitude. Very recent studies have shown that, in both ground waters and lake waters, the Zr/Hf ratio is either higher or lower compared to the interacting minerals displaying a large variability in the distribution of these twin elements. In this communication the possible processes responsible for such a large fractionation are discussed but further work is needed to test the validity of these interpretations. This basic problem of scientific significance needs more attention from the water-rock interaction community.

Zuddas, P., Inguaggiato, C., Censi, P., D'Alessandro, W. (2017). Zr-Hf fractionation during Water-Rock Interaction. PROCEDIA EARTH AND PLANETARY SCIENCE, 17, 670-673 [10.1016/j.proeps.2016.12.179].

Zr-Hf fractionation during Water-Rock Interaction

INGUAGGIATO, Claudio;CENSI, Paolo;
2017-01-01

Abstract

Zr and Hf are two elements having same ionic charge and similar ionic size at a given coordination number. Despite the Zr/Hf ratio is considered to be quite constant in meteorites and lithospheric rocks, seawaters collected from the surface down to varying depths of several Pacific Ocean stations reveal that the Zr/Hf ratio increases by one order of magnitude. Very recent studies have shown that, in both ground waters and lake waters, the Zr/Hf ratio is either higher or lower compared to the interacting minerals displaying a large variability in the distribution of these twin elements. In this communication the possible processes responsible for such a large fractionation are discussed but further work is needed to test the validity of these interpretations. This basic problem of scientific significance needs more attention from the water-rock interaction community.
2017
Water-Rock Interaction International Symposium 2016 (WRI 15)
Evora (Portugal)
16-21 October 2016
15
Zuddas, P., Inguaggiato, C., Censi, P., D'Alessandro, W. (2017). Zr-Hf fractionation during Water-Rock Interaction. PROCEDIA EARTH AND PLANETARY SCIENCE, 17, 670-673 [10.1016/j.proeps.2016.12.179].
File in questo prodotto:
File Dimensione Formato  
Zuddas et al. 2017.pdf

accesso aperto

Tipologia: Versione Editoriale
Dimensione 183.31 kB
Formato Adobe PDF
183.31 kB Adobe PDF Visualizza/Apri

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/10447/227144
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 7
social impact