The volume of the 39.8 ka Campanian Ignimbrite, Italy

2020 ◽  
Author(s):  
Aurora Silleni ◽  
Guido Giordano ◽  
Roberto Isaia ◽  
Michael H Ort
Keyword(s):  
Campanian Ignimbrite

Facies variation in the Campanian Ignimbrite

2015 ◽  
Vol 33 ◽  
pp. 83-87 ◽  
Author(s):  
Claudio Scarpati ◽  
Domenico Sparice ◽  
Annamaria Perrotta
Keyword(s):  
Campanian Ignimbrite ◽  
Facies Variation

scholarly journals The Campanian Ignimbrite Eruption: New Data on Volcanic Ash Dispersal and Its Potential Impact on Human Evolution

PLoS ONE ◽  
2013 ◽  
Vol 8 (6) ◽  
pp. e65839 ◽  
Author(s):  
Kathryn E. Fitzsimmons ◽  
Ulrich Hambach ◽  
Daniel Veres ◽  
Radu Iovita
Keyword(s):  
Human Evolution ◽  
Volcanic Ash ◽  
Campanian Ignimbrite ◽  
Potential Impact ◽  
Ash Dispersal

scholarly journals Magma chamber evolution prior to the Campanian Ignimbrite and Neapolitan Yellow Tuff eruptions (Campi Flegrei, Italy)

2007 ◽  
Vol 70 (8) ◽  
pp. 961-976 ◽  
Author(s):  
Sonja Pabst ◽  
Gerhard Wörner ◽  
Lucia Civetta ◽  
Roberto Tesoro
Keyword(s):  
Magma Chamber ◽  
Campi Flegrei ◽  
Campanian Ignimbrite ◽  
Neapolitan Yellow Tuff

scholarly journals The permeability and elastic moduli of tuff from Campi Flegrei, Italy: implications for ground deformation modelling

Solid Earth ◽  
2014 ◽  
Vol 5 (1) ◽  
pp. 25-44 ◽  
Author(s):  
M. J. Heap ◽  
P. Baud ◽  
P. G. Meredith ◽  
S. Vinciguerra ◽  
T. Reuschlé
Keyword(s):  
Ultrasonic Wave ◽  
Elastic Moduli ◽  
Ground Deformation ◽  
Laboratory Data ◽  
Campi Flegrei ◽  
Pore Collapse ◽  
Campanian Ignimbrite ◽  
Wave Velocities ◽  
Neapolitan Yellow Tuff ◽  
Dynamic Elastic Moduli

Abstract. The accuracy of ground deformation modelling at active volcanoes is a principal requirement in volcanic hazard mitigation. However, the reliability of such models relies on the accuracy of the rock physical property (permeability and elastic moduli) input parameters. Unfortunately, laboratory-derived values on representative rocks are usually rare. To this end we have performed a systematic laboratory study on the influence of pressure and temperature on the permeability and elastic moduli of samples from the two most widespread lithified pyroclastic deposits at the Campi Flegrei volcanic district, Italy. Our data show that the water permeability of Neapolitan Yellow Tuff and a tuff from the Campanian Ignimbrite differ by about 1.5 orders of magnitude. As pressure (depth) increases beyond the critical point for inelastic pore collapse (at an effective pressure of 10–15 MPa, or a depth of about 750 m), permeability and porosity decrease significantly, and ultrasonic wave velocities and dynamic elastic moduli increase significantly. Increasing the thermal stressing temperature increases the permeability and decreases the ultrasonic wave velocities and dynamic elastic moduli of the Neapolitan Yellow Tuff; whereas the tuff from the Campanian Ignimbrite remains unaffected. This difference is due to the presence of thermally unstable zeolites within the Neapolitan Yellow Tuff. For both rocks we also find, under the same pressure conditions, that the dynamic (calculated from ultrasonic wave velocities) and static (calculated from triaxial stress-strain data) elastic moduli differ significantly. The choice of elastic moduli in ground deformation modelling is therefore an important consideration. While we urge that these new laboratory data should be considered in routine ground deformation modelling, we highlight the challenges for ground deformation modelling based on the heterogeneous nature (vertically and laterally) of the rocks that comprise the caldera at Campi Flegrei.

Eruptive history of Neapolitan volcanoes: constraints from 40Ar–39Ar dating

2012 ◽  
Vol 150 (3) ◽  
pp. 412-425 ◽  
Author(s):  
CLAUDIO SCARPATI ◽  
ANNAMARIA PERROTTA ◽  
SIMONE LEPORE ◽  
ANDREW CALVERT
Keyword(s):  
Volcanic Field ◽  
Campi Flegrei ◽  
Campanian Ignimbrite ◽  
Pyroclastic Deposits ◽  
Eruptive History ◽  
New Period ◽  
History Of ◽  
Tephra Layers ◽  
The City ◽  
Eruptive Cycles

AbstractThe city of Naples can be considered part of the Campi Flegrei volcanic field, and deposits within the urban area record many autochthonous pre- to post-caldera eruptions. Age measurements were carried out using 40Ar–39Ar dating techniques on samples from small monogenetic vents and more widely distributed tephra layers. The 40Ar–39Ar ages on feldspar phenocrysts yielded ages of c. 16 ka and 22 ka for events older than the Neapolitan Yellow Tuff caldera-forming eruption (15 ka), and ages of c. 40 ka, 53 ka and 78 ka for events older than the Campanian Ignimbrite caldera-forming eruption (39 ka). The oldest age obtained is 18 ka older than previous dates for pyroclastic deposits cropping out along the northern rim of Campi Flegrei. The results of this study allow us to divide the Campi Flegrei volcanic history into four main, geochronologically distinct eruptive cycles. A new period, the Paleoflegrei, occurred before 74–78 ka and has been proposed to better discriminate the ancient volcanism in the volcanic field. The eruptive history of Campi Flegrei extends possibly further back than this, but the products of previous eruptions are difficult to date owing to the lack of fresh juvenile clasts. These new geochronological data, together with recently published ages related to young volcanic edifices located in the city of Naples (Nisida volcano, 3.9 ka) testify to persistent activity over a period of at least 80 ka, with an average eruption recurrence interval of ~555 years within and adjacent to this densely populated city.

Volatiles in magmas related to the Campanian Ignimbrite eruption: Experiments vs. natural findings

2015 ◽  
Vol 100 (10) ◽  
pp. 2284-2297 ◽  
Author(s):  
Sara Fanara ◽  
Roman E. Botcharnikov ◽  
Danilo M. Palladino ◽  
Franziska Adams ◽  
Julia Buddensieck ◽  
...  
Keyword(s):  
Campanian Ignimbrite

The campanian ignimbrite: a major prehistoric eruption in the Neapolitan area (Italy)

1978 ◽  
Vol 41 (1) ◽  
pp. 10-31 ◽  
Author(s):  
F. Barberi ◽  
F. Innocenti ◽  
L. Lirer ◽  
R. Munno ◽  
T. Pescatore ◽  
...  
Keyword(s):  
Campanian Ignimbrite
Sign in / Sign up

Export Citation Format

Share Document