Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10175
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dc.contributor.authorallInguaggiato, C.; Università di Palermoen
dc.contributor.authorallCensi, P.; Università di Palermoen
dc.contributor.authorallZuddas, P.; Universites Sorbonne, Paris, Franceen
dc.contributor.authorallLondoño, J. M.; Servicio Geologico Colombiano, Manizales, Colombiaen
dc.contributor.authorallChacón, Z.; Servicio Geologico Colombiano, Manizales, Colombiaen
dc.contributor.authorallAlzate, D.; Servicio Geologico Colombiano, Manizales, Colombiaen
dc.contributor.authorallBrusca, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.authorallD'Alessandro, W.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.date.accessioned2015-10-27T15:48:59Zen
dc.date.available2015-10-27T15:48:59Zen
dc.date.issued2015-12-06en
dc.identifier.urihttp://hdl.handle.net/2122/10175en
dc.description.abstractThe geochemical behaviour of Rare Earth Elements, Zr and Hf was investigated in the thermal waters of Nevado del Ruiz volcano system. A wide range of pH, between 1.0 and 8.8, characterizes these fluids. The acidic waters are sulphate dominatedwith different Cl/SO4 ratios. The important role of the pH and the ionic complexes for the distribution of REE, Zr and Hf in the aqueous phase was evidenced. The pH rules the precipitation of authigenic Fe and Al oxyhydroxides producing changes in REE, Zr, Hf amounts and strong anomalies of Cerium. The precipitation of alunite and jarosite removes LREE from the solution, changing the REE distribution in acidic waters. Y–Ho and Zr–Hf (twin pairs) have a different behaviour in strong acidic waterswith respect to the water with pH near-neutral. Yttrium and Ho behave as Zr and Hf in waters with pH near neutral-to-neutral, showing superchondritic ratios. The twin pairs showed to be sensitive to the co-precipitation and/or adsorption onto the surface of authigenic particulate (Fe-, Al-oxyhydroxides), suggesting an enhanced scavenging of Ho and Hf with respect to Y and Zr, leading to superchondritic values. In acidic waters, a different behaviour of twin pairs occurs with chondritic Y/Ho ratios and sub-chondritic Zr/Hf ratios. For the first time, Zr and Hf were investigated in natural acidic fluids to understand the behaviour of these elements in extreme acidic conditions and different major anion chemistry. Zr/Hf molar ratio changes from 4.75 to 49.29 in water with pH b 3.6. In strong acidic waters the fractionation of Zr and Hf was recognized as function of major anion contents (Cl and SO4), suggesting the formation of complexes leading to sub-chondritic Zr/Hf molar ratios.en
dc.language.isoEnglishen
dc.publisher.nameElsevier Science Limiteden
dc.relation.ispartofChemical geologyen
dc.relation.ispartofseries/417 (2015)en
dc.subjectZirconiumen
dc.subjectHafniumen
dc.subjectRare earth elementsen
dc.subjectIonic complexesen
dc.subjectAcidic watersen
dc.subjectFe–Al oxyhydroxidesen
dc.titleGeochemistry of REE, Zr and Hf in a wide range of pH and water composition: The Nevado del Ruiz volcano-hydrothermal system (Colombia)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber125–133en
dc.identifier.URLhttp://www.sciencedirect.com/science/article/pii/S0009254115300462en
dc.subject.INGV03. Hydrosphere::03.04. Chemical and biological::03.04.03. Chemistry of watersen
dc.subject.INGV03. Hydrosphere::03.04. Chemical and biological::03.04.06. Hydrothermal systemsen
dc.identifier.doi10.1016/j.chemgeo.2015.09.025en
dc.description.obiettivoSpecifico2V. Dinamiche di unrest e scenari pre-eruttivien
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0009-2541en
dc.relation.eissn1872-6836en
dc.contributor.authorInguaggiato, C.en
dc.contributor.authorCensi, P.en
dc.contributor.authorZuddas, P.en
dc.contributor.authorLondoño, J. M.en
dc.contributor.authorChacón, Z.en
dc.contributor.authorAlzate, D.en
dc.contributor.authorBrusca, L.en
dc.contributor.authorD'Alessandro, W.en
dc.contributor.departmentUniversità di Palermoen
dc.contributor.departmentUniversità di Palermoen
dc.contributor.departmentUniversites Sorbonne, Paris, Franceen
dc.contributor.departmentServicio Geologico Colombiano, Manizales, Colombiaen
dc.contributor.departmentServicio Geologico Colombiano, Manizales, Colombiaen
dc.contributor.departmentServicio Geologico Colombiano, Manizales, Colombiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptFacoltà di Scienze Geologiche, Università di Palermo,-
crisitem.author.deptDipartimento DiSTeM, Università di Palermo-
crisitem.author.deptUniversites Sorbonne, Paris, France-
crisitem.author.deptServicio Geologico Colombiano-
crisitem.author.deptServicio Geologico Colombiano, Manizales, Colombia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.orcid0000-0002-9583-7692-
crisitem.author.orcid0000-0002-8597-0465-
crisitem.author.orcid0000-0002-6570-9673-
crisitem.author.orcid0000-0003-1724-0388-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent03. Hydrosphere-
crisitem.classification.parent03. Hydrosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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