Geochemical and isotopic (Nd–Pb–Sr–O) variations bearing on the genesis of volcanic rocks from Vesuvius, Italy

Ayuso, Robert A.; Vivo, Benedetto De; Rolandi, G.; Seal, Robert R.; Paone, Angelo

doi:10.1016/s0377-0273(97)00057-7

Cited by 171 publications

(156 citation statements)

References 82 publications

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“…The major element compositions of Mt. SommaVesuvius rocks display signi®cant temporal variability (Ayuso et al, 1998). Plots of major elements for the overall Mt.…”

Section: Temporal Variations In Major Element Contents Of Mt Somma-vmentioning

confidence: 99%

Relationships between Campi Flegrei and Mt. Somma volcanism: evidence from melt inclusions in clinopyroxene phenocrysts from volcanic breccia xenoliths

Danyushevsky

Lima

2001

Mineralogy and Petrology

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“…The major element compositions of Mt. SommaVesuvius rocks display signi®cant temporal variability (Ayuso et al, 1998). Plots of major elements for the overall Mt.…”

Section: Temporal Variations In Major Element Contents Of Mt Somma-vmentioning

confidence: 99%

Relationships between Campi Flegrei and Mt. Somma volcanism: evidence from melt inclusions in clinopyroxene phenocrysts from volcanic breccia xenoliths

Danyushevsky

Lima

2001

Mineralogy and Petrology

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“…According to Santacroce et al [15] the PB eruption represents the first explosive event of the Somma volcano, dated at ca 22 ka. Other authors [16,17] refer to this event as the Sarno eruption, and report that it follows an older explosive event, the Codola eruption. We use the term PB-Sarno eruption to recognize the fact that the two different names are commonly used in the literature to refer to the same eruptive event.…”

Section: Geological Settingmentioning

confidence: 99%

“…Somma-Vesuvius is cyclical, and three mega-cycles can be distinguished based on bulk rock compositional data [18] (and references therein). Within each mega-cycle the primary magma composition remains the same, but a new mega-cycle is characterized by a different composition [17]. The compositions of the eruptive products of the 3 megacycles change from slightly, to mildly, to highly silicaundersaturated [15,18].…”

Section: Geological Settingmentioning

confidence: 99%

“…The compositions of the eruptive products of the 3 megacycles change from slightly, to mildly, to highly silicaundersaturated [15,18]. The products of the first megacycle are slightly silica-saturated (K-trachyte, K-latite) evolving toward slightly silica-undersaturated [17,18]. The products of the second mega-cycle are mildly silicaundersaturated (phonotephrites to phonolites; [15,17,19]).…”

Section: Geological Settingmentioning

confidence: 99%

“…The products of the first megacycle are slightly silica-saturated (K-trachyte, K-latite) evolving toward slightly silica-undersaturated [17,18]. The products of the second mega-cycle are mildly silicaundersaturated (phonotephrites to phonolites; [15,17,19]). The third mega-cycle is characterized by strongly silicaundersaturated rocks with tephrite to tephriphonolitefoidite composition [15,19].…”

Section: Geological Settingmentioning

confidence: 99%

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Composition and origin of nodules from the ≈20 ka Pomici di Base (PB)-Sarno eruption of Mt. Somma — Vesuvius, Italy

Klébesz¹,

Bodnar

Vivo

et al. 2012

Open Geosciences

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Nodules (coarse-grain "plutonic" rocks) were collected from the ca. 20 ka Pomici di Base (PB)-Sarno eruption of Mt. Somma-Vesuvius, Italy. The nodules are classified as monzonite-monzogabbro based on their modal composition. The nodules have porphyrogranular texture, and consist of An-rich plagioclase, K-feldspar, clinopyroxene (ferroan-diopside), mica (phlogopite-biotite) ± olivine and amphibole. Aggregates of irregular intergrowths of mostly alkali feldspar and plagioclase, along with mica, Fe-Ti-oxides and clinopyroxene, in the nodules are interpreted as crystallized melt pockets. Crystallized silicate melt inclusions (MI) are common in the nodules, especially in clinopyroxenes. Two types of MI have been identified. Type I consists of mica, Fe-Ti-oxides and/or dark green spinel, clinopyroxene, feldspar and a vapor bubble. Volatiles (CO 2 , H 2 O) could not be detected in the vapor bubbles by Raman spectroscopy. Type II inclusions are generally lighter in color and contain subhedral feldspar and/or glass and several opaque phases, most of which are confirmed to be oxide minerals by SEM analysis. Some of the opaque-appearing phases that are below the surface may be tiny vapor bubbles. The two types of MI have different chemical compositions. Type I MI are classified as phono-tephrite -tephri-phonolite -basaltic trachy-andesite, while Type II MI have basaltic composition. The petrography and MI geochemistry led us to conclude that the nodules represent samples of the crystal mush zone in the active plumbing system of Mt. Somma-Vesuvius that were entrained into the upwelling magma during the PB-Sarno eruption.

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The late Quaternary tephrostratigraphical record of the San Gregorio Magno basin (southern Italy)

Munno

Petrosino

2007

J Quaternary Science

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Twenty-one primary pyroclastic layers were found embedded in the lacustrine sediments of the San Gregorio Magno basin (Southern Apennines). These sand-sized layers were characterised by a noticeable juvenile fragments content and by a sharp basal contact with the underlying clay and silt sediments. The tephra layers have been correlated with terrestrial counterparts from well-known eruptive events of the Campanian volcanic area, or with reference layers from deep sea sediment cores and from the Monticchio maar sequence. The investigation of the San Gregorio Magno tephra layers made it possible to deduce that lacustrine sedimentation at San Gregorio Magno basin began before 170k yr BP and lasted at least until the emplacement of the Neapolitan Yellow Tuff, which occurred about 15k yr BP. The tephrochronology allowed determination of the varying sedimentation rate that occurred in the basin. Correlation of the lacustrine record with marine sequences has allowed development of a late Quaternary tephrostratotype for southern Italy.

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Geochemical and isotopic (Nd–Pb–Sr–O) variations bearing on the genesis of volcanic rocks from Vesuvius, Italy

Cited by 171 publications

References 82 publications

Relationships between Campi Flegrei and Mt. Somma volcanism: evidence from melt inclusions in clinopyroxene phenocrysts from volcanic breccia xenoliths

Relationships between Campi Flegrei and Mt. Somma volcanism: evidence from melt inclusions in clinopyroxene phenocrysts from volcanic breccia xenoliths

Composition and origin of nodules from the ≈20 ka Pomici di Base (PB)-Sarno eruption of Mt. Somma — Vesuvius, Italy

The late Quaternary tephrostratigraphical record of the San Gregorio Magno basin (southern Italy)

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