Fanara, Sara

[["dc.bibliographiccitation.firstpage","171"],["dc.bibliographiccitation.journal","Chemical Geology"],["dc.bibliographiccitation.lastpage","181"],["dc.bibliographiccitation.volume","461"],["dc.contributor.author","Fanara, Sara"],["dc.contributor.author","Sottili, Gianluca"],["dc.contributor.author","Silleni, Aurora"],["dc.contributor.author","Palladino, Danilo M."],["dc.contributor.author","Schmidt, Burkhard C."],["dc.date.accessioned","2020-12-10T14:23:03Z"],["dc.date.available","2020-12-10T14:23:03Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1016/j.chemgeo.2016.12.033"],["dc.identifier.issn","0009-2541"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71819"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","CO2 bubble nucleation upon pressure release in potassium-rich silicate magmas"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","S0012825221001550"],["dc.bibliographiccitation.firstpage","103654"],["dc.bibliographiccitation.journal","Earth-Science Reviews"],["dc.bibliographiccitation.volume","220"],["dc.contributor.author","Buono, Gianmarco"],["dc.contributor.author","Fanara, Sara"],["dc.contributor.author","Macedonio, Giovanni"],["dc.contributor.author","Palladino, Danilo M."],["dc.contributor.author","Petrosino, Paola"],["dc.contributor.author","Sottili, Gianluca"],["dc.contributor.author","Pappalardo, Lucia"],["dc.date.accessioned","2021-12-01T09:24:09Z"],["dc.date.available","2021-12-01T09:24:09Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1016/j.earscirev.2021.103654"],["dc.identifier.pii","S0012825221001550"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94864"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.issn","0012-8252"],["dc.title","Reply to “Comment on the paper by Buono et al. “Dynamics of degassing in evolved alkaline magmas: Petrological, experimental and theoretical insights” (Earth Science Reviews, 211 (2020), 103402)”"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","688"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Geophysical Journal International"],["dc.bibliographiccitation.lastpage","694"],["dc.bibliographiccitation.volume","209"],["dc.contributor.author","Sottili, Gianluca"],["dc.contributor.author","Fanara, Sara"],["dc.contributor.author","Silleni, Aurora"],["dc.contributor.author","Palladino, Danilo M."],["dc.contributor.author","Schmidt, Burkhard C."],["dc.date.accessioned","2018-11-07T10:24:08Z"],["dc.date.available","2018-11-07T10:24:08Z"],["dc.date.issued","2017"],["dc.description.abstract","The volatile content in magmas is fundamental for the triggering and style of volcanic eruptions. Carbon dioxide, the second most abundant volatile component in magmas after H2O, is the first to reach saturation upon ascent and depressurization. We investigate experimentally CO2-bubble nucleation in trachybasalt and trachyte melts at high temperature and high pressure (HT and HP) through wetting-angle measurements on different (sialic, mafic or oxide) phenocryst phases. The presence of crystals lowers the supersaturation required for CO(2-)bubble nucleation up to 37 per cent (heterogeneous nucleation, HeN), with a minor role of mineral chemistry. Different from H2O-rich systems, feldspar crystals are effective in reducing required supersaturation for bubble nucleation. Our data suggest that leucite, the dominant liquidus phase in ultrapotassic systems at shallow depth (i.e. <100 MPa), facilitates late-stage, extensive magma vesiculation through CO2 HeN, which may explain the shifting of CO2-rich eruptive systems towards an apparently anomalous explosive behaviour."],["dc.identifier.doi","10.1093/gji/ggx039"],["dc.identifier.isi","000402641600012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42599"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1365-246X"],["dc.relation.issn","0956-540X"],["dc.title","CO2-crystal wettability in potassic magmas: implications for eruptive dynamics in light of experimental evidence for heterogeneous nucleation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","103402"],["dc.bibliographiccitation.journal","Earth-Science Reviews"],["dc.bibliographiccitation.volume","211"],["dc.contributor.author","Buono, Gianmarco"],["dc.contributor.author","Fanara, Sara"],["dc.contributor.author","Macedonio, Giovanni"],["dc.contributor.author","Palladino, Danilo M."],["dc.contributor.author","Petrosino, Paola"],["dc.contributor.author","Sottili, Gianluca"],["dc.contributor.author","Pappalardo, Lucia"],["dc.date.accessioned","2021-04-14T08:29:47Z"],["dc.date.available","2021-04-14T08:29:47Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.earscirev.2020.103402"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82988"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","0012-8252"],["dc.title","Dynamics of degassing in evolved alkaline magmas: Petrological, experimental and theoretical insights"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2284"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","American Mineralogist"],["dc.bibliographiccitation.lastpage","2297"],["dc.bibliographiccitation.volume","100"],["dc.contributor.author","Fanara, Sara"],["dc.contributor.author","Botcharnikov, Roman E."],["dc.contributor.author","Palladino, Danilo M."],["dc.contributor.author","Adams, Franziska"],["dc.contributor.author","Buddensieck, Julia"],["dc.contributor.author","Mulch, Andreas"],["dc.contributor.author","Behrens, Harald"],["dc.date.accessioned","2018-11-07T09:50:55Z"],["dc.date.available","2018-11-07T09:50:55Z"],["dc.date.issued","2015"],["dc.description.abstract","The solubility of H2O- and CO2-bearing fluids in trachytic and trachybasaltic melts from erupted magmas of the Campi Flegrei Volcanic District has been investigated experimentally at 1100 and 1200 degrees C, respectively, and at 100, 200, 300, 400, and 500 MPa. The solubility of H2O in the investigated melts varies between 3.48 +/- 0.07 wt% at 100 MPa to 10.76 +/- 0.12 wt% at 500 MPa in trachytic melts and from 3.49 +/- 0.07 wt% at 100 MPa to 9.10 +/- 0.11 wt% at 500 MPa in trachybasaltic melts. The content of dissolved CO2 in melts coexisting with the most CO2-rich fluid phase increases from 281 +/- 24 ppm at 100 MPa to 2710 +/- 99 ppm at 500 MPa in trachyte, and from 727 +/- 102 ppm at 100 MPa to 3565 +/- 111 ppm at 500 MPa in trachybasalt. Natural samples from the Campanian Ignimbrite eruption (trachyte) and from the Solchiaro eruption (trachybasalt) were collected around the city of Naples and on Procida Island. Deuterium/hydrogen (D/H) ratios were analyzed in natural pumices pre-heated at different temperatures to remove water adsorbed and/or imprinted by glass alteration processes. It has been determined that heating of the glass to 350 degrees C efficiently removes most of secondary water and the remaining concentrations represent primary magmatic water preserved in the erupted material. Hydrogen isotope composition (with SD values ranging between -70%0 and -110 parts per thousand) and its correlation with bulk water content in selected pumice samples of the Campanian Ignimbrite eruption are consistent with isotopic fractionation between magmatic fluid and melt during degassing of erupting magma. Hence, the H2O and CO2 contents in natural glasses from pumice samples are considered as minimum estimates on volatile concentrations in the melt just prior to the eruption or at the fragmentation event. The water contents in natural glasses vary from 0.83 +/- 0.07 to 3.74 +/- 0.06 wt% for trachytes from the Campanian Ignimbrite eruption and from 1.96 +/- 0.06 to 3.47 +/- 0.07 wt% for trachybasalts from the Solchiaro eruption. The CO2 contents vary from 78 +/- 120 ppm CO2 to 1743 +/- 274 ppm for trachytes from the Campanian Ignimbrite eruption and from 240 +/- 293 to 1213 +/- 250 ppm for trachybasalts from the Solchiaro eruption. A combination of natural and experimental data provides minimum pressure estimates for the storage and ascent conditions of magmas. The Campanian Ignimbrite magma could have been stored or ponded during its rising path at two different levels: a deeper one corresponding to depth of about 8 to 15 km and a shallower one at about 1 to 8 km. Trachybasalts from Solchiaro erupted from the deepest level of about 11 km with a storage or ponding level at around 2 to 8 km depth. Although an uncertainty of at least a kilometer has to be considered in estimating storage or ponding depths, these estimates point to significantly deeper magmatic sources for both eruptions as those considered previously."],["dc.identifier.doi","10.2138/am-2015-5033"],["dc.identifier.isi","000362694600027"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35807"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mineralogical Soc Amer"],["dc.relation.issn","1945-3027"],["dc.relation.issn","0003-004X"],["dc.title","Volatiles in magmas related to the Campanian Ignimbrite eruption: Experiments vs. natural findings"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]