Micro-analytical investigations on Campi Flegrei pyroxene-hosted melt inclusions, H2O-CO2-S-melt and δD modelling
Description
We attempt to reconstruct the architecture of the magmatic feeding system of the Campi Flegrei volcanic field, to shed light on the processes interplaying during magma evolution and ascent to the surface. To this aim, we provide chemical (major, trace and volatile elements) and isotopic (δD) data on melt inclusions from Campi Flegrei eruptions. The datadabase includes major and trace elements analyses of the host-clinopyroxene crystals, from the paper "The source-to-surface journey of volatile-flooded magmas: the archetypal case of the Campi Flegrei unrest caldera" by Ilenia Arienzo, Bruna Cariddi, Carlo Pelullo, Claudia D’Oriano, Etienne Deloule, Massimo D’Antonio, Roberto Moretti. Case studies are the Campanian Ignimbrite eruption (∼40 ka) and explosive events occurred during the last 5 kyrs of volcanic activity. The obtained data were modelled by using the non-ideal, composition-dependent model of Papale et al. (2006) and the CHOSETTO software (Moretti et al., 2003; Papale et al., 2022) implemented by accounting for magma crystallization.
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Samples preparation was carried out at the Laboratories of the Istituto Nazionale di Geofisica e Vulcanologia (INGV), Osservatorio Vesuviano, Italy, following the description in the paper "The source-to-surface journey of volatile-flooded magmas: the archetypal case of the Campi Flegrei unrest caldera" by Ilenia Arienzo, Bruna Cariddi, Carlo Pelullo, Claudia D’Oriano, Etienne Deloule, Massimo D’Antonio, Roberto Moretti. Dissolved water, CO2, F, Cl contents and for selected melt inclusions δD ratios, were measured using the CAMECA IMS 1280 HR of the French national SIMS facility at the Centre de Recherches Petrographiques et Geochimiques, Vandouvre Les Nancy, France. Melt inclusions were analyzed for major, minor oxide and SO3 elements with a JEOL JXA 8200 electron microprobe at the INGV, Rome, Italy . Major elements composition of clinopyroxene was investigated at the INGV, Pisa (Italy), by means of a Zeiss EVO MA 10 Scanning Electron Microscope equipped with an Oxford ISIS microanalytical EDS system. Trace elements composition of melt inclusions and host-pyroxene were determined using the Laser Ablation-Inductively Coupled Plasma-Mass Spectrometer (LA-ICP-MS) installed at INGV, Palermo (Italy), with a GeoLasPro 193 nm Excimer system, equipped with an Agilent 7500ce quadrupole ICP-MS.
Institutions
- Istituto Nazionale di Geofisica e Vulcanologia
- Universite de Lorraine