Zirconium–hafnium and rare earth element signatures discriminating the effect of atmospheric fallout from hydrothermal input in volcanic lake water

Abstract

, L. Brusca, et al.. Zirconiumhafnium and rare earth element signatures discriminating the effect of atmospheric fallout from hydrothermal input in volcanic lake water. Chemical Geology, Elsevier, 2016Elsevier, , 433, pp.1-11. <10.1016Elsevier, /j.chemgeo.2016.04.002>. <hal-01313018>A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT1 Zirconium-hafnium and rare earth element signatures discriminating the effect of atmospheric fallout from hydrothermal input in volcanic lake water (HREE) enrichments in CO 2 -rich waters collected from springs and wells, whereas a different REE pattern was found in the 'Specchio di Venere' Lake water with middle REE (MREE) enrichments. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

Rare earth elements concentrations and speciation in rainwater from Guiyang, an acid rain impacted zone of Southwest China

“…As mentioned above, HREE enrichment has been commonly reported in water with high carbonate and CO 2 concentrations. It is interesting that CO 2 -rich waters (pH=9) from the top and bottom of ‗Specchio di Venere' Lake also enrich in MREE (Inguaggiato et al, 2016). The REE pattern of lake water was similar to a desert varnish of Saharan origin, cosisting mainly Fe-and Mn-oxyhydroxide coatings and clay minerals.…”

“…Aubert et al (2002) found that rainwater and snow from east France showed HREE enrichment similar to seawater. This shale-normalized pattern was commonly detected in natural waters with high carbonate or CO 2 concentration (Johannesson and Lyons, 1994;Choi et al, 2009;Inguaggiato et al, 2016). The enrichment in HREE is the result of the formation of stable carbonate complexes in water where HREE preferentially form stronger carbonate complexes than MREE and LREE (Elerfield, 1988;.…”

“…Due to their unique chemical and physical properties, REEs have been extensively used as powerful tracers of material sources and geochemical processes in oceans, rivers, estuaries, lakes and groundwater (Elderfiled et al, 1990;Sholknovitz, 1995;Gabrielli et al, 2009;Johannesson et al, 2011;Pearce et al, 2013). It has recently been recognized that REEs in atmospheric particles and rainwater have a significant impact on the geochemical cycle of REEs in the hydrosphere (Greaves et al, 1994(Greaves et al, , 1999Wilkinson et al, 1997;Wang et al, 2000;Yang et al, 2007;Schacht et al, 2010;Suzuki et al, 2011;Klaver et al, 2014;Inguaggiato et al, 2016).…”

“…The REEs are commonly divided into three groups: light rare earth elements (LREE) from La to Nd, middle rare earth elements (MREE) from Sm to Dy, and heavy rare earth elements (HREE) from Ho to Lu (Inguaggiato et al, 2016).…”

Rare earths, zirconium and hafnium distribution in coastal areas: The example of Sabella spallanzanii (Gmelin, 1791)

“…This coherence is absent during aqueous processes due to the different grades of Zr and Hf hydrolysis and dissolved complexation in natural waters (Aja et al, 1995;Veyland et al, 1998;Byrne, 2002;Hagfeldt et al, 2004;Messner et al, 2011a;2011b;Inguaggiato et al, 2015Inguaggiato et al, , 2016Censi et al, 2017). Aqueous environments usually make Hf more surface-reactive than Zr, which changes the associated Zr/Hf with respect to the range of values recognised in rocks and minerals and provides a useful signature of solid-liquid processes.…”