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Genetic–exposome axis orchestrates cardiac motion patterns
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The role of volatiles in magma chamber dynamics
Nature, 2002Many andesitic volcanoes exhibit effusive eruption activity, with magma volumes as large as 10(7)-10(9) m(3) erupted at rates of 1-10 m(3) x s(-1) over periods of years or decades. During such eruptions, many complex cycles in eruption rates have been observed, with periods ranging from hours to years.
Herbert E Huppert
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Deep Sea Research Part B. Oceanographic Literature Review, 1981
One of the major limitations in dealing with subvolcanic and plutonic magmatic processes is the inaccessibility of actifre magma chambers. Although this has the advantage of allowing scope for imagination and speculation, untrammelled by too many physical constraints, most igneous petrologists would dearly like to know what magma chambers ...
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One of the major limitations in dealing with subvolcanic and plutonic magmatic processes is the inaccessibility of actifre magma chambers. Although this has the advantage of allowing scope for imagination and speculation, untrammelled by too many physical constraints, most igneous petrologists would dearly like to know what magma chambers ...
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Evaluating volumes for magma chambers and magma withdrawn for caldera collapse
Earth and Planetary Science Letters, 2014Article history: We develop an analytical model to infer the total volume of a magma chamber associated with caldera collapse and the critical volume of magma that must be withdrawn to induce caldera collapse. The diameter of caldera border fault, depth to the magma chamber, and volumes of magma erupted before the onset of collapse and of entire ...
Geshi N, Ruch J, ACOCELLA, Valerio
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Properties of Carbonatite Magma and Processes in Carbonatite Magma Chambers
The Journal of Geology, 1983The physical and thermal properties of carbonatite magmas are estimated by analogy with alkali carbonate melts, which are ionic liquids, composed of discrete, unpolymerized ions. Carbonatite magmas are estimated to have low viscosity (on the order of 5 × 10-2 poise), low heat of fusion (175 J/gm), and large thermal diffusivity (4 × 10-3 J/cm-sec-K ...
Allan H. Treiman, Andrew Schedl
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Convection and mixing in magma chambers
Earth-Science Reviews, 1986Abstract This paper reviews advances made during the last seven years in the application of fluid dynamics to problems of igneous petrology, with emphasis on the laboratory work with which the authors have been particularly involved. Attention is focused on processes in magma chambers which produce diversity in igneous rocks, such as fractional ...
J.S. Turner, I.H. Campbell
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Dynamics of magma withdrawal from stratified magma chambers
Geology, 1986The time history of magma withdrawal through a central vent from a flat-roofed chamber strongly stratified in density and viscosity has been numerically modeled. Important parameters include the geometry of the reservoir; the initial vertical compositional profile; the ratio of viscous, inertial, and gravitational forces; and the basal normal stress ...
Frank J. Spera +3 more
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Making magma chambers from mush
Science, 2017Volcanology Shallow magma chambers either erupt as volcanoes or solidify as intrusive magma bodies. These magma bodies are traditionally considered to be long-lived and dominated by melt. Cashman et al. review the evidence that shallow magma chambers are actually assembled quickly from much larger, crystal-rich transcrustal magmatic systems.
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The Beginning: Mafic Magmas Invading Felsic Magma Chambers
2021The initial stages of magma interaction, i.e. the moment at which the two magmas come into contact, is a crucial point since the fate of magma mixing and its development in space and time largely depend on the outcome of this first encounter. In this chapter we discuss the possible fluid dynamic and thermodynamic processes developing during the ...
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The Roles of Heat and Gas in a Mushy Magma Chamber
Journal of Geophysical Research: Solid Earth, 2022AbstractCrustal magmatic systems likely consist of magmatic reservoirs dominated by crystal mush. Recent studies suggest that the physical processes occurring in crystal mush could alter the response of magmatic reservoirs during volcanic unrest. Here, we present a magma chamber deformation model that incorporates two new aspects in crystal mush: heat ...
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