The Campanian Ignimbrite (southern Italy) geochemical zoning: insight on the generation of a super-eruption from catastrophic differentiation and fast withdrawal

Pappalardo, Lucia; Ottolini, Luisa; Mastrolorenzo, G.

doi:10.1007/s00410-007-0270-0

Cited by 63 publications

(60 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Second, CI is the largest magnitude explosive event of the Mediterranean region in late Quaternary (dating 39 ka, De Vivo et al, 2001), while MTN is the last eruption that occurred in the caldera in A.D. 1538 (Di Vito et al, 1987). Finally, there exists in the literature a lot of information on these eruptions about their stratigraphy, deposit characteristics, eruption dynamics, compositional, geochemical and textural data that allows us to interpret the results of this study in a robust scientific context (Rosi et al, 1996;Civetta et al, 1997;Rosi et al, 1999;Polacci et al, 2003;D'Oriano et al, 2005;Piochi et al, 2005;Pappalardo et al, 2007;Piochi et al, 2008, and references therein).…”

Section: Samples and Summary Of Main Textural Featuresmentioning

confidence: 69%

“…The CI distal pyroclastic flow pumice clasts are poorly porphyritic to aphyric (phenocryst content between b 10 vol% and b 3 vol%, Civetta et al, 1997;Pappalardo et al, 2007), highly vesicular (connected vesicularity~71-89 vol%, Table 1) volcanic rocks with a mostly microlitefree (microlite content b2 vol%, Civetta et al, 1997;Pappalardo et al, 2007) glassy groundmass. They have foamy vesicle textures consisting of mostly spherical to sub-spherical to slightly deformed vesicles with micron-size walls around larger, interconnected vesicles (Fig.…”

Section: Samples and Summary Of Main Textural Featuresmentioning

confidence: 99%

See 1 more Smart Citation

Permeability measurements of Campi Flegrei pyroclastic products: An example from the Campanian Ignimbrite and Monte Nuovo eruptions

Polacci

Maisonneuve

Giordano

et al. 2014

Journal of Volcanology and Geothermal Research

View full text Add to dashboard Cite

In order to understand outgassing during volcanic eruptions, we performed permeability measurements on trachy-phonolitic pyroclastic products from the Campanian Ignimbrite and Monte Nuovo, two explosive eruptions from the active Campi Flegrei caldera, Southern Italy. Viscous (Darcian) permeability spans a wide range between 1.22 × 10 −14 and 9.31 × 10 −11 m 2 . Inertial (non-Darcian) permeability follows the same trend as viscous permeability: it increases as viscous permeability increases, highlighting the strong direct correlation between these two parameters. We observe that vesicularity does not exert a first order control on permeability: the Monte Nuovo scoria clasts are the most permeable samples but not the most vesicular; pumice clasts from the Campanian Ignimbrite proximal facies, whose vesicularity is comparable with that of Monte Nuovo scoriae, are instead the least permeable. In addition, we find that sample geometry exhibits permeability anisotropy as samples oriented parallel to vesicle elongation are more permeable than those oriented perpendicular. We compare our results with permeability values of volcanic products from effusive and explosive activity, and discuss the role of melt viscosity and crystallinity on magma permeability.

show abstract

Section: Samples and Summary Of Main Textural Featuresmentioning

confidence: 69%

Section: Samples and Summary Of Main Textural Featuresmentioning

confidence: 99%

Permeability measurements of Campi Flegrei pyroclastic products: An example from the Campanian Ignimbrite and Monte Nuovo eruptions

Polacci

Maisonneuve

Giordano

et al. 2014

Journal of Volcanology and Geothermal Research

View full text Add to dashboard Cite

show abstract

“…(2) that was recalibrated by using both experimental and MELTS data does not differ from that of the original model (d). et al, 1997;D'Oriano et al, 2005;Piochi et al, 2005Piochi et al, , 2008Fedele et al, 2008;Pappalardo et al, 2008;Fourmentraux et al, 2012). We have also integrated the dataset with additional analyses from this study (see Table 4EA for the whole dataset and the analytical conditions).…”

Section: Application To the Natural Case Study Of Phlegrean Fieldsmentioning

confidence: 99%

“…The overall crystal content of trachytic and phonolitic magmas remains lower than 7 wt.% until K-feldspar crystallizes and then the crystallinity increases up to 50 wt.% due to prevalent K-feldspar formation (Andujar et al, 2008(Andujar et al, , 2010Andujar and Scaillet, 2012). As a result, the magmatic system undergoes important chemical and physical changes (e.g., density, dissolved H 2 O content, viscosity and volume fraction fluid; see Fowler et al, 2007), potentially leading to violent explosive eruptions and voluminous caldera-forming events (e.g., Pappalardo et al, 2008;Palladino et al, 2014).…”

Section: Introductionmentioning

confidence: 98%

A K-feldspar–liquid hygrometer specific to alkaline differentiated magmas

et al. 2015

View full text Add to dashboard Cite

“…Such a low water content in the phonolitic end-member derives from melt inclusion data from Phlegrean Fields (Arienzo et al 2010). Typically, more evolved magmas are expected to have a relatively larger water content (Signorelli et al 2001;Cannatelli et al 2007;Pappalardo et al 2007;Mollo et al 2015), resulting possibly in smaller density contrasts at the interface among the two magmas thus less efficient mixing dynamics.…”

Section: Magmatic Systemmentioning

confidence: 99%

Magma Chamber Rejuvenation: Insights from Numerical Models

Montagna

Papale

Longo

et al. 2017

Advances in Volcanology

View full text Add to dashboard Cite

Most volcanic systems on Earth are characterized by chemically different magmas that can be found in the erupted products throughout their history. The reasons are multiple, including variations in the mantle source and/or crustal assimilation, as well as shallower processes such as fractional crystallization or mixing and mingling. Magma chamber rejuvenation indicates the processes that happen whenever a magma intrudes from the mantle to shallower depths and encounters an already established storage zone (i.e. a magma chamber or reservoir). Magmas rising from depth are typically characterized by higher temperatures, larger volatile contents and more primitive, mantle-like compositions than those residing in the shallow crust. The interaction with magmas that have already resided at shallower depths for a while (years to thousands of years) varies the physical and chemical properties of both the involved magmatic end-members. Typically, volatile-rich magmas coming from depth are lighter than degassed shallow magma; therefore, a gravitational instability sets in as the two come into contact, which generates convection and thus intense mingling and mixing among the two. These dynamic interactions cause variations in the physical and chemical properties of the magmas themselves, as well as in the stress conditons both inside the reservoir and in the host rock. The volcanic system as a whole enters an unrest scenario, that can evolve to eruption or not depending on the specific conditions. Numerical simulations of the dynamics within magmatic systems can shed light on the features of magma chamber rejuvenation, providing the time

show abstract

The Campanian Ignimbrite (southern Italy) geochemical zoning: insight on the generation of a super-eruption from catastrophic differentiation and fast withdrawal

Cited by 63 publications

References 75 publications

Permeability measurements of Campi Flegrei pyroclastic products: An example from the Campanian Ignimbrite and Monte Nuovo eruptions

Permeability measurements of Campi Flegrei pyroclastic products: An example from the Campanian Ignimbrite and Monte Nuovo eruptions

A K-feldspar–liquid hygrometer specific to alkaline differentiated magmas

Magma Chamber Rejuvenation: Insights from Numerical Models

Contact Info

Product

Resources

About