A detailed study of the pyroclastic deposits AD 79 ‘Pompei’ Plinian eruption Vesuvius has allowed: (1) reconstruction thermal, compositional and isotopic (87Sr/86Sr) pre-eruptive layering shallow magma chamber; (2) quantitative definition syn-eruptive mixing between different magmas occupying chamber, its relationships with dynamics; (3) recognition variability mafic batches supplying chamber. During phases ∼25–30% was ejected as white K-phonolitic pumice, 70–75% grey K-tephri-phonolitic...

The Campi Flegrei caldera is one of the highest risk volcanic areas on Earth. Our research documents a 150 year‐long period intense volcanism following less than 200 years repose after Agnano‐Monte Spina Plinian eruption (4.1 ka). new data show that renewal was preceded by an uplift few tens meters, triggered mafic refilling reservoirs at depths 3 km or less. studies also indicate for first time occurrence contemporaneous eruptions from locations in different sectors caldera. These results...

Research Article| November 01, 2006 Magma chamber of the Campi Flegrei supervolcano at time eruption Campanian Ignimbrite Paola Marianelli; Marianelli 1Dipartimento di Scienze della Terra, Università degli Studi Pisa, via Santa Maria 53,\ 56126 Italy Search for other works by this author on: GSW Google Scholar Alessandro Sbrana; Sbrana Monica Proto Geology (2006) 34 (11): 937–940. https://doi.org/10.1130/G22807A.1 Article history received: 13 Mar rev-recd: 31 May accepted: 07 Jun first...

A volcanological map of the active Ischia volcanic field that includes Vivara Island is presented. The at 1:10,000 scale and based on 1:5000 mapping, geological CAR.G data, new studies. Geological data are represented three-dimensional orographic background digital terrain model inland offshore areas field. This allows a better visualization main morphological, volcanic, structures. Six phases were identified basis volcanotectonic events; 110 units arranged following these evolutive phases,...

A large number of clinopyroxene (cpx) phenocrysts and hosted melt inclusions (MI) in pyroclasts from several Vesuvius eruptions were analyzed. Assuming that their temperature homogenization (T hom ) reflects crystallization the host mineral after quenching, composition MI represents which crystallized, each cpx‐MI pair records equilibrium conditions at T . These data used to discuss magma evolution within shallow chamber. They formed by means periodic arrival mafic batches, recorded diopside...

Abstract A comprehensive understanding of the processes that occur during magmatic storage and pre-eruptive ascent—and their associated timescales—is critical to identifying potential precursory signals, developing robust volcano early-warning systems. Stromboli’s persistent activity comprises continuous degassing explosive ranges from hourly, low-intensity “normal” occasional, more violent, paroxysmal activity. While magma source drive normal are reasonably constrained, eruptive...

Research Article| November 01, 2001 Melt inclusion record of immiscibility between silicate, hydrosaline, and carbonate melts: Applications to skarn genesis at Mount Vesuvius Paolo Fulignati; Fulignati 1Dipartimento di Scienze della Terra, Università degli Studi Pisa, via Santa Maria 53, 56126 Italy Search for other works by this author on: GSW Google Scholar Vadim S. Kamenetsky; Kamenetsky 2School Earth Sciences Centre Ore Deposit Research, University Tasmania, GPO Box 252-79, Hobart,...

The thermal and compositional conditions of magma chambers constrain the type complexity their metasomatic aureoles. Fragments these aureoles, disrupted during explosive eruptions Vesuvius, provide quenched snapshots interactions between potassic magmas carbonate country rocks. Near highly crystallized peripheral portions chambers, represented by magmatic xenoliths (fergusites, syenites pyroxenites), skarn aureoles form. Open conduit reservoirs lower plinian subplinian eruption develop...

Mt. Vesuvius has experienced a period of semipersistent volcanic activity over the last three centuries, producing mainly lava effusions and some mixed effusive‐explosive eruptions higher magnitude. We present systematic study on major volatile elements melt inclusions trapped in olivine crystals peculiar to lapilli fallout emplaced during more intense episodes explosive activity. Based these data, we propose that deep feeding system active this was formed by vertically extended volume crust...

ABSTRACT A volcanological map of the active Somma-Vesuvius volcano is presented at 1:20,000 scale. The based on 1:5000 field mapping carried out during Italian CARG project. Geological data are represented a digital terrain model volcano. This allows better visualisation main morphological, volcanic, and geological features. legend organised in four different panels, which depict activity caldera development. survey recognition description lithostratigraphic units. highlights volcanic...

Abstract: Ischia is a rare case of well-exposed caldera system that has experienced rapid recent resurgence, which can be used to dissect the anatomy an otherwise inaccessible active hydrothermal developed in caldera-forming environment. Integrated analyses melt and fluid inclusions, mineralogy stable isotopic compositions pumices, tuffs syenitic xenoliths volcanic provide strong physico-chemical constraints on shallow magmatic reservoir system. The been exposed by uplift Mt. Epomeo...

Abstract. Volcanic tephra are independent age horizons and can synchronize strata of various paleoclimate records including ice sediment cores. The Holocene section the Greenland Ice Core Project (GRIP) core is dated by multi-parameter annual layer counting, contains peaks in acidity, SO42− microparticle concentrations at a depth 429.1 to 429.3 m, which have not previously been definitively ascribed volcanic eruption. Here, we identify particles determine that shards extracted from m GRIP...

Research Article| June 01, 2016 Simultaneous eruptions from multiple vents at Campi Flegrei (Italy) highlight new eruption processes calderas Marco Pistolesi; Pistolesi 1Dipartimento di Scienze della Terra, Università Firenze, via G. La Pira 4, 50121 Florence, Italy Search for other works by this author on: GSW Google Scholar Roberto Isaia; Isaia 2Istituto Nazionale Geofisica e Vucanologia, Diocleziano 328, 80124 Naples, Paola Marianelli; Marianelli 3Dipartimento Pisa, S. Maria 53, 56126...

A volcanological map merging continental and marine areas of the Phlegrean Fields Procida Island (Southern Italy) is presented at 1:25,000 scale. The based on 1:5,000 field mapping, geology survey carried out during Italian CAR.G (Geological CARtography, Servizio Geologico d'Italia) project bathymetric seismic data. Geological data are represented a digital terrain model volcano. This allows better visualization main morphological, volcanic, geological features. legend organized in seven...

The island of Ischia, an active volcanic field emerging in the western sector Gulf Naples (Southern Italy), represents archetypal case caldera that underwent a very large resurgence related to intrusion shallow magma body. culminated with formation structural high central island, i.e., Mt. Epomeo block. This is bordered by system faults along which activity occurred up 1302 A.D., and damaging earthquakes were generated historical recent time. seismicity located prevalently northern appears...

In this paper we build a subsurface model that helps in visualizing and understanding the structural framework, geology their interactions with Mt. Amiata geothermal system. Modelling 3D provides possibility to interpolate geometry of structures is an effective way geological features. The modelling approach appears be crucial for further progress reconstruction assessment Amiata. Furthermore, used as basis numerical thermo-fluid-dynamic existing reservoir(s). integration between borehole...