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http://hdl.handle.net/2122/8840
DC Field | Value | Language |
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dc.contributor.authorall | Lanzo, G.; Università di PAlermo, Dip, Scienze della Terra e del MAre | en |
dc.contributor.authorall | Landi, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.authorall | Rotolo, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.date.accessioned | 2013-12-11T09:40:23Z | en |
dc.date.available | 2013-12-11T09:40:23Z | en |
dc.date.issued | 2013-09 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8840 | en |
dc.description.abstract | The Green Tuff (GT) Plinian eruption, the largest in magnitude at Pantelleria, erupted 3 to 7 km3 DRE of pantellerite magma and a small volume of trachyte. Fifty-nine anorthoclase-hosted melt inclusions from the two basal pumice memberswere analyzed by FT-IR spectroscopy in order to assess the pre-eruptiveH2Ocontent in the pantellerite melt. Microanalytical methods were used to determine major element, Cl, F and S contents. Melt inclusions and glassy groundmasses have a nearly homogeneous pantelleritic composition (peralkaline index = 1.9-2.2) and variable water contents ranging from 1.4 to as high as 4.2 wt %, i.e. much higher than the 1.4 wt % of earlier published studies. The chlorine content is constant at about 1 wt %. Combined Cl and H2O data were used to estimate a confining pressure of about 50 MPa (depth around 2-3 km) for the GT magma chamber. The chamber was characterized by a compositional zoning with a dominant pantellerite overlying a trachyte magma. Soon after the GT eruption, intra-caldera volcanism was dominated by the eruption of voluminous trachyte lava flows, while pantellerite melt production resumed after about 20 ka with numerous low-volume, mildly explosive (Strombolian) to effusive eruptions. Comparison with data from the literature reveals that, despite the different explosivity, the post-caldera Strombolian eruptions and the GT Plinian eruption were fed by pantelleritic magmas with similar water contents. Chlorine and CO2 contents suggest that the young magma reservoirs feeding the Strombolian to effusive activity were deeper (h ≥ 4.5 km) than the much larger (based on erupted volumes) magma chamber which fed the GT eruption. | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier Science Limited | en |
dc.relation.ispartof | Journal of volcanology and geothermal research | en |
dc.relation.ispartofseries | /262(2013) | en |
dc.subject | Pantelleria | en |
dc.subject | Green Tuff | en |
dc.subject | pantellerites | en |
dc.subject | melt inclusions | en |
dc.title | Volatiles in pantellerite magmas: A case study of the Green Tuff Plinian eruption (Island of Pantelleria, Italy) | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.description.pagenumber | 153-163 | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions | en |
dc.identifier.doi | 10.1016/j.jvolgeores.2013.06.011 | en |
dc.description.obiettivoSpecifico | 2V. Struttura e sistema di alimentazione dei vulcani | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0377-0273 | en |
dc.relation.eissn | 1872-6097 | en |
dc.contributor.author | Lanzo, Giovanni | en |
dc.contributor.author | Landi, P. | en |
dc.contributor.author | Rotolo, S. | en |
dc.contributor.department | Università di PAlermo, Dip, Scienze della Terra e del MAre | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Università di Palermo | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
crisitem.author.dept | Università degli Studi di Palermo | - |
crisitem.author.orcid | 0000-0002-8463-5710 | - |
crisitem.author.orcid | 0000-0001-7523-1338 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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lanzo et al 13.pdf | 2.34 MB | Adobe PDF |
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