HR: 0800h
AN: V51C-0719    [Abstracts]
TI: History of the Magmatic Feeding System of the Campi Flegrei Caldera
AU: Orsi, G
EM: orsi@ov.ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia- Ossevatorio Vesuviano, via Diocleziano 328, Napoli, it 80124, Italy
AU: * Civetta, L
EM: civetta@ov.ingv.it
AF: Università Federico II, via Cinthia, Napoli, it 80124, Italy
AU: * Civetta, L
EM: civetta@ov.ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia- Ossevatorio Vesuviano, via Diocleziano 328, Napoli, it 80124, Italy
AU: Arienzo, I
EM: arienzo@ov.ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia- Ossevatorio Vesuviano, via Diocleziano 328, Napoli, it 80124, Italy
AU: D'antonio, M
EM: masdanto@unina.it
AF: Istituto Nazionale di Geofisica e Vulcanologia- Ossevatorio Vesuviano, via Diocleziano 328, Napoli, it 80124, Italy
AU: Di Renzo, V
EM: direnzo@ov.ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia- Ossevatorio Vesuviano, via Diocleziano 328, Napoli, it 80124, Italy
AU: Di Vito, M A
EM: divito@ov.ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia- Ossevatorio Vesuviano, via Diocleziano 328, Napoli, it 80124, Italy
AB: The definition of the magmatic feeding system of active volcanoes, in terms of composition, time-scale of crystallization, relation between composition of the erupted magma and structural position of vents, magma chamber processes and architecture, is of extreme importance for the hazard evaluation. The studies that are carried out for the definition of the magmatic systems include detailed mineralogical, geochemical and isotopic analyses (Sr, Nd, Pb). The Campi Flegrei caldera magmatic structure is characterized by deep and shallow magma chambers. In the deep reservoir (20-10 km depth) mantle derived magmas differentiate and are contaminated with continental crust. In the shallow reservoirs isotopically distinct magmas further differentiate, mix and mingle before the eruptions. These processes generated isotopically distinct components that were variably involved along different structures of the Campi Flegrei caldera during time. At Campi Flegrei caldera the relation between the structural position of the eruptive vent, for the last 14 ka of activity, and the isotopic composition of the emitted magma allow us to reconstruct the architecture of the magmatic feeding system and to infer the chemical and isotopic composition, and the magma chamber location and processes, of the future eruption, according to the position of the vent
DE: 3618 Magma chamber processes (1036)
DE: 8428 Explosive volcanism
DE: 8439 Physics and chemistry of magma bodies
DE: 8440 Calderas
DE: 8499 General or miscellaneous
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2007 Fall Meeting