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Magmatic life at low Reynolds number

Allen F. Glazner
Magmatic life at low Reynolds number
Geology (Boulder) (November 2014) 42 (11): 935-938


The extremely high viscosities of high-silica liquids mean that intermediate and high-silica magmas exist deep within the laminar range of fluid behavior. Many common interpretations of layering in plutonic rocks rely on analogies with sedimentation in water, but for such high-viscosity liquids (including interstitial liquid in partially crystallized intermediate magmas), these analogies cannot be correct. Particle Reynolds numbers for high-silica liquids are exceedingly small, on the order of 10 (super -6) or less. In such a regime, inertia is negligible, and everyday experience is inapplicable. Layering and other pseudo-sedimentary structures in granodiorites and granites likely arise from processes such as chemical diffusion, self-organization, and crystal ripening.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 42
Serial Issue: 11
Title: Magmatic life at low Reynolds number
Author(s): Glazner, Allen F.
Affiliation: University of North Carolina, Chapel Hill, Department of Geological Sciences, Chapel Hill, NC, United States
Pages: 935-938
Published: 201411
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 50
Accession Number: 2014-105161
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201452
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