Magnitude of the 39.8 ka Campanian Ignimbrite, Italy: insights from an ignimbrite isopach map

Silleni, Aurora; Giordano, Guido; Isaia, Roberto; Ort, Michael H.

doi:10.1002/essoar.10502011.3

Cited by 2 publications

(4 citation statements)

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“…Due to its stratigraphic location and base previous geological literature [7,59,91,92], it can be correlated with the Campanian Ignim pyroclastic flow deposits. Based on literature data, this unit is important because it was tified in the whole subsurface of the eastern Bay of Naples [7,59,91,92]. The Campa 7 and 8), showing the interpretation of the volcanic edifices interpreted as tuff rings in the eastern sector of the Bay of Naples.…”

Section: Figure 11mentioning

confidence: 79%

“…The A seismic unit (Table 1; Figures 6-10) is an important seismic unit in the stratigraphic architecture of the Bay of Naples. Due to its stratigraphic location and based on previous geological literature [7,59,91,92], it can be correlated with the Campanian Ignimbrite pyroclastic flow deposits. Based on literature data, this unit is important because it was identified in the whole subsurface of the eastern Bay of Naples [7,59,91,92].…”

Section: Figure 11mentioning

confidence: 95%

“…Due to its stratigraphic location and based on previous geological literature [7,59,91,92], it can be correlated with the Campanian Ignimbrite pyroclastic flow deposits. Based on literature data, this unit is important because it was identified in the whole subsurface of the eastern Bay of Naples [7,59,91,92]. The Campanian Ignimbrite is composed of thick pyroclastic deposits, trachytic and phonolitic in composition, and genetically related to a collapsed caldera [8][9][10][11]13,47,50,[66][67][68][69][70]93,94].…”

Section: Figure 11mentioning

confidence: 95%

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Submarine Stratigraphy of the Eastern Bay of Naples: New Seismo-Stratigraphic Data and Implications for the Somma-Vesuvius and Campi Flegrei Volcanic Activity

Aiello

2022

JMSE

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The submarine stratigraphy of the eastern Bay of Naples is studied through seismo-stratigraphic data correlated with borehole data. Multichannel seismic profiles are interpreted in order to reconstruct the stratigraphic relationships between the Quaternary marine seismic units and the volcanic acoustic substratum. Seven seismic units are recognized based on the geological interpretation of seismic profiles and using seismo-stratigraphic criteria. The top of the lowest seismic unit was correlated with the Campanian Ignimbrite (Southern Campania Volcanic Zone). The stratigraphic setting of the eastern Bay of Naples is characterized by NE-SW trending seismic structures, probably corresponding with tuff rings. These tuff rings can be compared with the Porto Miseno, the Archiaverno and Averno, and the Astroni tuff rings (Campi Flegrei). Offshore, the Somma-Vesuvius a seismic unit was interpreted as the fallout deposits representing the base of the AD 79 eruption. However, since a branch of the isopach of 5 m of the “Pomici di Avellino” pyroclastic deposits is very close to the Tyrrhenian coastline and near our GRNA01 and GRNA03 seismic profiles, we cannot exclude that the seismic unit could be also correlated with the deposits of this eruption.

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Section: Figure 11mentioning

confidence: 79%

Section: Figure 11mentioning

confidence: 95%

Section: Figure 11mentioning

confidence: 95%

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Submarine Stratigraphy of the Eastern Bay of Naples: New Seismo-Stratigraphic Data and Implications for the Somma-Vesuvius and Campi Flegrei Volcanic Activity

Aiello

2022

JMSE

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“…. Campanian Ignimbrite pyroclastic current deposits distribution [13][14][15][16][17] and inferred vent location of the Plinian phase 18 . The unconsolidated stratified ash flow deposit is ubiquitously underlying welded grey ignimbrite.…”

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confidence: 99%

Dynamics of large pyroclastic currents inferred by the internal architecture of the Campanian Ignimbrite

Scarpati

Sparice

Perrotta

2020

Sci Rep

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Large ignimbrites are the product of devastating explosive eruptions that have repeatedly impacted climate and life on global scale. The assemblage of vertical and lateral lithofacies variations within an ignimbrite sheet, its internal architecture, may help to determine how the parental pyroclastic current evolves in time and space. The 39 ka Campanian Ignimbrite eruption, vented from Campi Flegrei caldera, laid down a thick ignimbrite over an area of thousands of km2. A detailed reconstruction of the vertical and lateral variation of the seven lithofacies recognised in the ignimbrite medial sequence constrains the behaviour of this event. The pyroclastic current flowed over a wide area around Campi Flegrei without depositing (bypass zone), and inundated a huge area during most of the paroxysmal, waxing phase, emplacing a mainly incipiently- to strongly- welded ignimbrite. Following this waxing phase, the leading edge of the current retreated back towards the source as the current waned, impacting a progressively smaller area and leaving an unconsolidated ash and lapilli deposit, later lithified. Our study illustrates how large pyroclastic currents can evolve in time and space and the importance of both internal (eruptive and transport mechanisms) and external (topography, surficial water and rain) factors in governing their behaviour.

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Magnitude of the 39.8 ka Campanian Ignimbrite, Italy: insights from an ignimbrite isopach map

Cited by 2 publications

References 46 publications

Submarine Stratigraphy of the Eastern Bay of Naples: New Seismo-Stratigraphic Data and Implications for the Somma-Vesuvius and Campi Flegrei Volcanic Activity

Submarine Stratigraphy of the Eastern Bay of Naples: New Seismo-Stratigraphic Data and Implications for the Somma-Vesuvius and Campi Flegrei Volcanic Activity

Dynamics of large pyroclastic currents inferred by the internal architecture of the Campanian Ignimbrite

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