Lithospheric VS models in the Campanian Plain (Italy) by integrating Rayleigh wave dispersion data from noise cross-correlation functions and earthquake recordings

Costanzo, Maria Rosaria; Nunziata, C.

doi:10.1016/j.pepi.2014.05.002

Cited by 12 publications

(4 citation statements)

References 39 publications

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“…Regarding pressure estimates, in order to evaluate the reliability of the different equilibrium test-geobarometer couples used here, we compare our results with those obtained with different methods used in literature (e.g., geophysical investigations, melt inclusions, phase equilibria) to infer the storage depth of Campi Flegrei magmas. In recent decades, geochemical and geophysical investigations allowed for the assessment that the Campi Flegrei plumbing system is characterized by deep and shallow reservoirs, [31][32][33][34][36][37][38][39][40][41][42][43][44][45]47,49,87,88,95,101,121,132,135,[153][154][155][156][157][158][159][160][161][162]. However, although the detachment of magma at a depth ≥ 8 km is widely accepted, there is no consensus about the structure of the plumbing system at shallower levels.…”

Section: Reliability Of Pressures Estimated For Campi Flegrei Mineralsmentioning

confidence: 99%

“…In this work, the geothermobarometers of Putirka [13] and Masotta et al [30] have been used to estimate pressures and temperatures of crystallization of olivine, clinopyroxene and feldspar crystals from volcanic products belonging to different periods of Campi Flegrei activity. In the last decades, various studies that used different geological, geochemical and/or geophysical information have tried to estimate the depths of magma storage below Campi Flegrei (e.g., [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]). Moreover, geothermometric estimates have been performed in several studies (e.g., [51][52][53][54][55][56][57][58]) in order to reconstruct the pre-eruptive temperature conditions of the magmas feeding different eruptions (e.g., Campanian Ignimbrite, Agnano-Monte Spina, Astroni).…”

Section: Introductionmentioning

confidence: 99%

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Mineral-Melt Equilibria and Geothermobarometry of Campi Flegrei Magmas: Inferences for Magma Storage Conditions

et al. 2022

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The eruptions of Campi Flegrei (Southern Italy), one of the most studied and dangerous active volcanic areas of the world, are fed by mildly potassic alkaline magmas, from shoshonite to trachyte and phonotrachyte. Petrological investigations carried out in past decades on Campi Flegrei rocks provide crucial information for understanding differentiation processes in its magmatic system. However, the compositional features of rocks are a palimpsest of many processes acting over timescales of 100–104 years, including crystal entrapment from multiple reservoirs with different magmatic histories. In this work, olivine, clinopyroxene and feldspar crystals from volcanic rocks related to the entire period of Campi Flegrei’s volcanic activity are checked for equilibrium with combined and possibly more rigorous tests than those commonly used in previous works (e.g., Fe–Mg exchange between either olivine or clinopyroxene and melt), with the aim of obtaining more robust geothermobarometric estimations for the magmas these products represent. We applied several combinations of equilibrium tests and geothermometric and geobarometric methods to a suite of rocks and related minerals spanning the period from ~59 ka to 1538 A.D. and compared the obtained results with the inferred magma storage conditions estimated in previous works through different methods. This mineral-chemistry investigation suggests that two prevalent sets of T–P (temperature–pressure) conditions, here referred to as “magmatic environments”, characterized the magma storage over the entire period of Campi Flegrei activity investigated here. These magmatic environments are ascribable to either mafic or differentiated magmas, stationing in deep and shallow reservoirs, respectively, which interacted frequently, mostly during the last 12 ka of activity. In fact, open-system magmatic processes (mixing/mingling, crustal contamination, CO2 flushing) hypothesized to have occurred before several Campi Flegrei eruptions could have removed earlier-grown crystals from their equilibrium melts. Moreover, our new results indicate that, in the case of complex systems such as Campi Flegrei’s, in which different pre-eruptive processes can modify the equilibrium composition of the crystals, one single geothermobarometric method offers little chance to constrain the magma storage conditions. Conversely, combined methods yield more robust results in agreement with estimates obtained in previous independent studies based on both petrological and geophysical methods.

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Section: Reliability Of Pressures Estimated For Campi Flegrei Mineralsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mineral-Melt Equilibria and Geothermobarometry of Campi Flegrei Magmas: Inferences for Magma Storage Conditions

et al. 2022

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“…Geosciences 2019, 9, x FOR PEER REVIEW 3 of 15 bedrock lies beneath a cover of marine, alluvial, and pyroclastic deposits, at a maximum depth of 3000 m [27]. It is dislocated by fault systems, mainly with extensional component [28,29]. The buried Magnaghi-Sebeto and Somma-Vesuvius faults have created locally an extensional tectonic field, as shown by the evidences in the late Pleistocene-Holocene activity [30,31] and by a gravitational sliding around the base of the Somma-Vesuvius edifice [32,33], leading to a subsiding tendency of the plain (Figure 1a).…”

Section: Study Areamentioning

confidence: 99%

Uplift Evidences Related to the Recession of Groundwater Abstraction in a Pyroclastic-Alluvial Aquifer of Southern Italy

Coda¹,

Confuorto²,

Vita³

et al. 2019

Geosciences

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Aquifer mismanagement is a common anthropogenic cause of subsidence and uplift phenomena in alluvial plains, representing one of the main natural hazards in urban areas due to related damage to urban structures and infrastructures. In this work, the groundwater rebound phenomenon that occurred in the last decades of the 20th century in the Lufrano area (Metropolitan area of Naples, Southern Italy) has been studied by integrating geological data, hydrogeological continuous monitoring and spaceborne SAR information derived from ERS-1/2 and ENVISAT satellites. In the period of 1989–2006, the Lufrano area, which hosts an important well field made up of 180 wells extracting groundwater for drinking use, suffered an initial over-exploitation of the aquifer which was followed by a sudden and severe decrease of the volume abstraction, resulting this last in a rapid ground uplift. The coupled analysis of hydrogeological and DInSAR data have shown a correspondence between piezometric level rise (up to 15 m) and ground uplift (up to 50 mm) trends in the period 1989–2006. In order to examine the spatio-temporal evolution of the phenomena and the cause-effect relationships, showing the link between the two phenomena and their rates, longitudinal cross-sections were carried out and comparisons between piezometric level rise and time-series of displacements were reconstructed. The obtained results represent an initial contribution to the definition of ground deformation related to groundwater level rise phenomena, providing a basis for future studies focused on the modelling of the hydro-mechanical properties of the aquifer.

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“…at different depths. Tomography results can be further inverted to determine a three-dimensional shear wave velocity structure of the area [Pontevivo and Panza, 2006;Panza et al, 2007a;Costanzo and Nunziata, 2014]. Liang and Langston [2008] investigated the crust in eastern North America by means of tomography from noise data, imaging ETSZ with a variable resolution between 2°×2° and 1°×1°.…”

Section: Introductionmentioning

confidence: 99%

Group velocity tomography of the upper crust in the eastern Tennessee seismic zone from ambient noise data

et al. 2016

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The eastern Tennessee seismic zone (ETSZ) is the second most seismically active area in the central and eastern United States after the New Madrid seismic zone, but the relatively weak seismicity and the absence of correlation between the seismicity distribution and the surface geology make its seismogenic potential controversial. In this work we investigate the structure of the upper crust in the ETSZ by means of group velocity tomography maps from seismic noise data. Results show that the seismic activity is associated with a relatively low velocity anomaly mainly located in one or more basement blocks. These blocks, bounded to the NW by the NY-AL lineament and to the SE by the Clingman lineaments, are buried beneath low velocity strata consistent with the presence of a relatively thick sedimentary cover. The imaged low velocity anomaly migrates towards the SE at increasing periods, suggesting a possible SE dipping weak structure where most of the seismic activity takes place.

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Lithospheric VS models in the Campanian Plain (Italy) by integrating Rayleigh wave dispersion data from noise cross-correlation functions and earthquake recordings

Cited by 12 publications

References 39 publications

Mineral-Melt Equilibria and Geothermobarometry of Campi Flegrei Magmas: Inferences for Magma Storage Conditions

Mineral-Melt Equilibria and Geothermobarometry of Campi Flegrei Magmas: Inferences for Magma Storage Conditions

Uplift Evidences Related to the Recession of Groundwater Abstraction in a Pyroclastic-Alluvial Aquifer of Southern Italy

Group velocity tomography of the upper crust in the eastern Tennessee seismic zone from ambient noise data

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