Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/16098
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dc.date.accessioned2023-02-02T11:04:13Z-
dc.date.available2023-02-02T11:04:13Z-
dc.date.issued2022-
dc.identifier.urihttp://hdl.handle.net/2122/16098-
dc.description.abstractWe analyzed from meso-to microscale the chemical interaction (e.g., bleaching) between deep fluids and carbonate rocks in pelagic limestones exposed along the seismically active Gubbio normal fault (Northern Apennines), exhumed from ca. 2 km depth. Bleaching is enhanced by the exploitation of inherited stylolitic seams by fluids and is favored by the progressive leaching and mobilization of primary components (i.e., Ca, Fe, Pb, and Cu) and the precipitation of authigenic baryte due to temperature and/or redox potential contrast. Analysis of fluid inclusions trapped in calcite veins in the damage zone precipitated from a H2O–NaCl-bearing fluid(s), with low salinity (1.22–2.57 wt%NaCleq) and a range of trapping temperature between 107 ◦C and 185 ◦C, higher than the host rock peak T conditions. Analysis of fluid inclusions and noble gases from syn-kinematic calcite and mineralogy of altered rocks suggests a mixed contribution between crustal-derived fluids with diagenetic fluids containing sulphates and CO2. We speculate that bleaching is a by-product of the circulation of such aggressive fluids with mixed contributions, likely mobilized during seismic event(s) and injected into the damage zone at shallow depths. Such processes, affecting the chemical-physical properties of limestones, are generally underestimated and should be considered when modelling hydraulic connectivity in fractured carbonate reservoirs.en_US
dc.language.isoEnglishen_US
dc.publisher.nameElsevieren_US
dc.relation.ispartofJournal of Structural Geologyen_US
dc.relation.ispartofseries/161 (2022)en_US
dc.subjectfluidsen_US
dc.subjecteartquakesen_US
dc.subjectGubbio Faulten_US
dc.subjectnoble gasesen_US
dc.titleChemical interaction driven by deep fluids in the damage zone of a seismogenic carbonate faulten_US
dc.typearticleen
dc.description.statusPublisheden_US
dc.description.pagenumber104668en_US
dc.identifier.doi10.1016/j.jsg.2022.104668en_US
dc.description.obiettivoSpecifico9T. Geochimica dei fluidi applicata allo studio e al monitoraggio di aree sismicheen_US
dc.description.journalTypeJCR Journalen_US
dc.relation.issn0191-8141en_US
dc.contributor.authorMarchesini, Barbara-
dc.contributor.authorCarminati, Eugenio-
dc.contributor.authorAldega, Luca-
dc.contributor.authorMirabella, Francesco-
dc.contributor.authorPetrelli, Maurizio-
dc.contributor.authorCaracausi, Antonio-
dc.contributor.authorBarchi, Massimiliano Rinaldo-
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italiaen_US
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptUniversità degli Studi di Perugia-
crisitem.author.deptDepartment of Physics and Geology, University of Perugia, Piazza dell’Università 1, 06123 Perugia, Italy-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptUniversità degli studi di Perugia-
crisitem.author.orcid0000-0002-4806-5271-
crisitem.author.orcid0000-0001-6956-4742-
crisitem.author.orcid0000-0003-2510-2890-
crisitem.author.orcid0000-0003-0431-4341-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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