Volcanic eruptions from ghost magma chambers (Articolo in rivista)

Type
Label
  • Volcanic eruptions from ghost magma chambers (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1029/2008GL034579 (literal)
Alternative label
  • TRIGILA R. 1, BATTAGLIA M. 1, SOTTILI G. 1, BRILLI M. 2 (2008)
    Volcanic eruptions from ghost magma chambers
    in Geophysical research letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • TRIGILA R. 1, BATTAGLIA M. 1, SOTTILI G. 1, BRILLI M. 2 (literal)
Pagina inizio
  • L16304-1 (literal)
Pagina fine
  • L16304-5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 35 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 16 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Roma, Italy 2 Istituto di Geologia Ambientale e Geoingegneria-CNR, Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Roma, Italy (literal)
Titolo
  • Volcanic eruptions from ghost magma chambers (literal)
Abstract
  • Recent studies have proposed that magma reservoirs crystallized to a virtually rigid crystal-mush can be partially remelted by diffusion of hot fluids. We show that for a crystal mush with the composition of a K-trachyte from the Campanian Ignimbrite (CI) Eruption, remelting can occur without a significant increase of the magma temperature, but simply by diffusion of H(2)O by the magmatic gases feeding the system. The CI origin is not the issue here, but rather the chemical and physical behavior of an almost solidified magma mass left over in a reservoir after a major eruption. To test our hypothesis, we run high pressure/high temperature laboratory experiments to study the kinetics of water diffusion, together with thermodynamics and fluid diffusion modelling. For small diffusivities, or large diffusion time, the remelting mechanism proposed above needs to be replaced by other processes as gas percolation or intrusion of a magmatic mass. (literal)
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