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Experimental measurements of the viscosity and melt structure of alkali basalts at high pressure and temperature.
Bonechi, Barbara; Stagno, Vincenzo; Kono, Yoshio; Hrubiak, Rostislav; Ziberna, Luca; Andreozzi, Giovanni B; Perinelli, Cristina; Gaeta, Mario.
Afiliación
  • Bonechi B; Dipartimento di Scienze della Terra, Sapienza Università di Roma, P.le Aldo Moro, 5, 00185, Rome, Italy. barbara.bonechi@uniroma1.it.
  • Stagno V; Dipartimento di Scienze della Terra, Sapienza Università di Roma, P.le Aldo Moro, 5, 00185, Rome, Italy. vincenzo.stagno@uniroma1.it.
  • Kono Y; Istituto Nazionale di Geofisica e Vulcanologia, 00143, Rome, Italy. vincenzo.stagno@uniroma1.it.
  • Hrubiak R; Geodynamics Research Center, Ehime University, Matsuyama, 790-8577, Japan.
  • Ziberna L; High Pressure Collaborative Access Team, X-Ray Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL, 60439, USA.
  • Andreozzi GB; Dipartimento di Matematica e Geoscienze, Università degli Studi di Trieste, Via Weiss 8, 34128, Trieste, Italy.
  • Perinelli C; Bayerisches Geoinstitut, University of Bayreuth, 95440, Bayreuth, Germany.
  • Gaeta M; Dipartimento di Scienze della Terra, Sapienza Università di Roma, P.le Aldo Moro, 5, 00185, Rome, Italy.
Sci Rep ; 12(1): 2599, 2022 Feb 16.
Article en En | MEDLINE | ID: mdl-35173251
Volcanic eruptions are shallow phenomena that represent the final stage of density- and viscosity- driven processes of melt migration from source rocks at upper mantle depths. In this experimental study, we investigated the effect of pressure (0.7-7.0 GPa) and temperature (1335-2000 °C) on the viscosity and the atomic melt structure of a synthetic anhydrous primitive alkaline basalt, an analogue of the pre-eruptive magma that likely feeds the Campi Flegrei Volcanic District at present day. Obtained viscosities (0.5-3.0 Pa s), mobility (0.1-0.4 g cm3 Pa-1 s-1) and ascent velocity (1.5-6.0 m yr-1) are presented to support geochemical and geophysical observations of Campi Flegrei as a critical volcanic district currently undergoing gradual magma recharge at depth.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2022 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2022 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Reino Unido