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Dynamic magma systems; implications for forecasting volcanic activity

R. Stephen J. Sparks and Katharine V. Cashman
Dynamic magma systems; implications for forecasting volcanic activity (in Volcanoes; from mantle to surface, Keith D. Putirka (editor) and Kari M. Cooper (editor))
Elements (February 2017) 13 (1): 35-40


Magma systems that supply volcanoes can extend throughout the crust and consist of mush (melt within a crystalline framework) together with ephemeral magma accumulations. Within a crystal-rich mush, slow processes of melt segregation and heat loss alternate with fast processes of destablisation and magma transport. Magma chambers form by two mechanisms: incremental magma intrusion into sub-solidus rocks or the segregation and rapid merging of melt-rich layers within mush regions. Three volcanic states reflect alternations of slow and fast processes: dormancy, unrest and eruption. Monitoring needs to detect processes of melt and fluid movements in the lower and middle crust during destabilisation to improve forecasting.

ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 13
Serial Issue: 1
Title: Dynamic magma systems; implications for forecasting volcanic activity
Title: Volcanoes; from mantle to surface
Author(s): Sparks, R. Stephen J.Cashman, Katharine V.
Author(s): Putirka, Keith D.editor
Author(s): Cooper, Kari M.editor
Affiliation: University of Bristol, School of Earth Sciences, Bristol, United Kingdom
Affiliation: California State University, Department of Earth and Environmental Sciences, Fresno, CA, United States
Pages: 35-40
Published: 201702
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 29
Accession Number: 2017-020873
Categories: Igneous and metamorphic petrologyQuaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201714
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