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Journal articles on the topic 'Magma chamber dynamics'

Author: Grafiati

Published: 10 March 2023

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1

Segall, Paul. "Magma chambers: what we can, and cannot, learn from volcano geodesy." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2139 (2019): 20180158. http://dx.doi.org/10.1098/rsta.2018.0158.

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Geodetic observations on volcanoes can reveal important aspects of crustal magma chambers. The rate of decay of deformation with distance reflects the centroid depth of the chamber. The amplitude of the deformation is proportional to the product of the pressure change and volume of the reservoir. The ratio of horizontal to vertical displacement is sensitive to chamber shape: sills are efficient at generating vertical displacement, while stocks produce more horizontal deformation. Geodesy alone cannot constrain important parameters such as chamber volume or pressure; furthermore, kinematic mode

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2

Townsend, Meredith, and Christian Huber. "A critical magma chamber size for volcanic eruptions." Geology 48, no. 5 (2020): 431–35. http://dx.doi.org/10.1130/g47045.1.

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Abstract We present a model for a coupled magma chamber–dike system to investigate the conditions required to initiate volcanic eruptions and to determine what controls the size of eruptions. The model combines the mechanics of dike propagation with internal chamber dynamics including crystallization, volatile exsolution, and the elastic response of the magma and surrounding crust to pressure changes within the chamber. We find three regimes for dike growth and eruptions: (1) below a critical magma chamber size, eruptions are suppressed because chamber pressure drops to lithostatic before a di

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3

Huppert, Herbert E., and Andrew W. Woods. "The role of volatiles in magma chamber dynamics." Nature 420, no. 6915 (2002): 493–95. http://dx.doi.org/10.1038/nature01211.

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4

Carrigan, Charles R., and Randall T. Cygan. "Implications of magma chamber dynamics for Soret-related fractionation." Journal of Geophysical Research 91, B11 (1986): 11451. http://dx.doi.org/10.1029/jb091ib11p11451.

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5

Asmerom, Yemane, S. Andrew DuFrane, Samuel B. Mukasa, Hai Cheng, and R. Lawrence Edwards. "Time scale of magma differentiation in arcs from protactinium-radium isotopic data." Geology 33, no. 8 (2005): 633–36. http://dx.doi.org/10.1130/g21638ar.1.

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Abstract Absolute chronology of magma differentiation processes has been a long-desired goal, given its importance in understanding magma chamber dynamics and its connection to a fundamental understanding of the style and frequency of volcanic eruptions. Broad estimates of the duration of magma differentiation and overall crustal residence times have been made based on a variety of indirect approaches, such as physical models of magma chamber cooling, rates of crystal growth and settling, and long-lived radiogenic isotopes. In contrast, combined 231Pa-235U data may provide a robust measure of

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6

Sigmarsson, O., I. Vlastelic, R. Andreasen, et al. "Remobilization of silicic intrusion by mafic magmas during the 2010 Eyjafjallajökull eruption." Solid Earth 2, no. 2 (2011): 271–81. http://dx.doi.org/10.5194/se-2-271-2011.

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Abstract. Injection of basaltic magmas into silicic crustal holding chambers and subsequent magma mingling or mixing is a process that has been recognised since the late seventies as resulting in explosive eruptions. Detailed reconstruction and assessment of the mixing process caused by such intrusion is now possible because of the exceptional time-sequence sample suite available from the tephra fallout of the 2010 summit eruption at Eyjafjallajökull volcano in South Iceland. Fallout from 14 to 19 April contains three glass types of basaltic, intermediate, and silicic compositions recording ra

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Vestergaard, Rikke, Gro Birkefeldt Møller Pedersen, and Christian Tegner. "The 1845–46 and 1766–68 eruptions at Hekla volcano: new lava volume estimates, historical accounts and emplacement dynamics." JOKULL 70 (April 8, 2021): 35–56. http://dx.doi.org/10.33799/jokull2020.70.035.

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We use new remote sensing data, historical reports, petrology and estimates of viscosity based on geochemical data to illuminate the lava emplacement flow-lines and vent structure changes of the summit ridge of Hekla during the large eruptions of 1845–46 and 1766–68. Based on the planimetric method we estimate the bulk volumes of these eruptions close to 0.4 km3 and 0.7 km3, respectively. However, comparison with volume estimates from the well-recorded 1947–48 eruption, indicates that the planimetric method appears to underestimate the lava bulk volumes by 40–60%. Hence, the true bulk volumes

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8

Utkin, I. S., O. E. Mel’nik, A. A. Afanas’ev, and Yu D. Tsvetkova. "Effect of Quartz Deposition on the Dynamics of Magma Chamber Degassing." Moscow University Mechanics Bulletin 73, no. 6 (2018): 129–34. http://dx.doi.org/10.3103/s0027133018060018.

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9

Mollo, Silvio, Flavio Di Stefano, and Francesca Forni. "Editorial for the Special Issue “Mineral Textural and Compositional Variations as a Tool for Understanding Magmatic Processes”." Minerals 11, no. 2 (2021): 102. http://dx.doi.org/10.3390/min11020102.

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This Special Issue of Minerals collects seven different scientific contributions highlighting how magma chamber processes and eruption dynamics studied either in the laboratory or in nature may ultimately control the evolutionary histories and geochemical complexities of igneous rocks [...]

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10

Marsh, Bruce D. "Solidification fronts and magmatic evolution." Mineralogical Magazine 60, no. 398 (1996): 5–40. http://dx.doi.org/10.1180/minmag.1996.060.398.03.

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AbstractFrom G. F. Becker's and L. V. Pirsson's early enunciations linking the dynamics of magma chambers to the rock records of sills and plutons to this day, two features stand at the centre of nearly every magmatic process: solidification fronts and phenocrysts. The structure and behaviour of the envisioned solidification front, however, has been mostly that akin to non-silicate, non-multiply-saturated systems, which has led to confusion in appreciating its role in magmatic evolution. The common habit of intruding magmas to carry significant amounts of phenocrysts, which can lead to efficie

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11

Calanchi, Natale, Rosanna De Rosa, Roberto Mazzuoli, Pierluigi Rossi, Roberto Santacroce, and Guido Ventura. "Silicic magma entering a basaltic magma chamber: eruptive dynamics and magma mixing — an example from Salina (Aeolian islands, Southern Tyrrhenian Sea)." Bulletin of Volcanology 55, no. 7 (1993): 504–22. http://dx.doi.org/10.1007/bf00304593.

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12

Cattell, A. C. "The Skye Main Lava Series: liquid density and the absence of basaltic hawaiites." Geological Magazine 126, no. 6 (1989): 681–84. http://dx.doi.org/10.1017/s001675680000697x.

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AbstractBasaltic hawaiite lavas are virtually absent in the Eocene Skye Main Lava Series, in contrast to relatively abundant basalts and hawaiites. Fractional crystallization from basalt to basaltic hawaiite involves extraction of a large proportion of plagioclase, and liquid densities thereby increase. From basaltic hawaiite to hawaiite titanomagnetite is a significant fractionating phase, and liquid densities decline. The coincidence between a gap in erupted compositions and a density maximum implies that liquid density exerted a strong control on ‘eruptibility’ of magmas; basaltic hawaiites

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13

Bain, A. A., A. M. Jellinek, and R. A. Wiebe. "Quantitative field constraints on the dynamics of silicic magma chamber rejuvenation and overturn." Contributions to Mineralogy and Petrology 165, no. 6 (2013): 1275–94. http://dx.doi.org/10.1007/s00410-013-0858-5.

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14

Holness, Marian B., Michael J. Stock, and Dennis Geist. "Magma chambers versus mush zones: constraining the architecture of sub-volcanic plumbing systems from microstructural analysis of crystalline enclaves." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2139 (2019): 20180006. http://dx.doi.org/10.1098/rsta.2018.0006.

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There are clear microstructural differences between mafic plutonic rocks that formed in a dynamic liquid-rich environment, in which crystals can be moved and re-arranged by magmatic currents, and those in which crystal nucleation and growth are essentially in situ and static. Crystalline enclaves, derived from deep crustal mushy zones and erupted in many volcanic settings, afford a unique opportunity to use the understanding of microstructural development, established from the study of intrusive plutons, to place constraints on the architecture of sub-volcanic systems. Here, we review the rele

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15

Yosifov, Dimcho. "Magma chamber structures in the East Rhodopes – geophysical characteristic and metallogenic significimce." Geologica Balcanica 21, no. 6 (1991): 91–106. http://dx.doi.org/10.52321/geolbalc.21.6.91.

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Chamber structures of Paleogene magmatism are a characteristic element of the structure or collisional depressions in the East Rhodopes. The following larger chamber structures are distinguished as circular heterogeneities of a 'different' type and class in the geophysical fields: Borovitsa, Zvezdel-Krumovgrad, Madzharovo and Lozen. Except for the Zvezdel-Krumovgrad structure the others coincide, in their larger part, with gravitation minima or occupy parts of them like Madzharovo caldera. In the magnetic field they are an ensemble of local anomalies, circular in shape and of different polarlt

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16

Paterson, Scott, Valbone Memeti, Roland Mundil, and Jiří Žák. "Repeated, multiscale, magmatic erosion and recycling in an upper-crustal pluton: Implications for magma chamber dynamics and magma volume estimates." American Mineralogist 101, no. 10 (2016): 2176–98. http://dx.doi.org/10.2138/am-2016-5576.

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17

Lucci, Federico, Gerardo Carrasco-Núñez, Federico Rossetti, et al. "Anatomy of the magmatic plumbing system of Los Humeros Caldera (Mexico): implications for geothermal systems." Solid Earth 11, no. 1 (2020): 125–59. http://dx.doi.org/10.5194/se-11-125-2020.

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Abstract. Understanding the anatomy of magma plumbing systems of active volcanoes is essential not only for unraveling magma dynamics and eruptive behaviors but also to define the geometry, depth, and temperature of the heat sources for geothermal exploration. The Pleistocene–Holocene Los Humeros volcanic complex is part of the eastern Trans-Mexican Volcanic Belt (central Mexico), and it constitutes one of the most important exploited geothermal fields in Mexico with ca. 90 MW of produced electricity. With the aim to decipher the anatomy (geometry and structure) of the magmatic plumbing system

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18

Bachmann, O., and G. W. Bergantz. "Deciphering Magma Chamber Dynamics from Styles of Compositional Zoning in Large Silicic Ash Flow Sheets." Reviews in Mineralogy and Geochemistry 69, no. 1 (2008): 651–74. http://dx.doi.org/10.2138/rmg.2008.69.17.

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19

Pearce, T. H., M. P. Griffin, and A. M. Kolisnik. "Magmatic crystal stratigraphy and constraints on magma chamber dynamics: Laser interference results on individual phenocrysts." Journal of Geophysical Research: Solid Earth 92, B13 (1987): 13745–52. http://dx.doi.org/10.1029/jb092ib13p13745.

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20

Gutiérrez, Francisco, and Miguel A. Parada. "Numerical Modeling of Time-dependent Fluid Dynamics and Differentiation of a Shallow Basaltic Magma Chamber." Journal of Petrology 51, no. 3 (2010): 731–62. http://dx.doi.org/10.1093/petrology/egp101.

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21

Agangi, Andrea, Jocelyn McPhie, and Vadim S. Kamenetsky. "Magma chamber dynamics in a silicic LIP revealed by quartz: The Mesoproterozoic Gawler Range Volcanics." Lithos 126, no. 1-2 (2011): 68–83. http://dx.doi.org/10.1016/j.lithos.2011.06.005.

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22

Aulinas, M., L. Civetta, M. A. Di Vito, G. Orsi, D. Gimeno, and J. L. Férnandez-Turiel. "The “Pomici di mercato” Plinian eruption of Somma-Vesuvius: magma chamber processes and eruption dynamics." Bulletin of Volcanology 70, no. 7 (2007): 825–40. http://dx.doi.org/10.1007/s00445-007-0172-z.

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23

Ayub, Syahrial, Muhammad Zuhdi, and Muhammad Taufik. "PARAMETER-PARAMETER FISIKA UNTUK MENGUNGKAP STRUKTUR STATIS BAWAH PERMUKAAN GUNUNGAPI." ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 7, no. 1 (2021): 181. http://dx.doi.org/10.31764/orbita.v7i1.4358.

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ABSTRAKParameter-parameter fisika gunungapi diungkap dengan metode geofisika. Survei kakas gravitasi dan magnetik yang menghasilkan anomali positive bagi medan gravitasi dan magnetiknya, mengungkap struktur statis bawah permukaannya. Analisis tremor volkanik mengungkap dinamika internalnya. Gerakan-gerakan (aliran) fluida magma di dalam gunungapi menjadi sumber getar yang memancarkan gelombang seismik yang di sebut tremor volkanik. Lokasi, migrasi, daya pancar, bentuk geometri sistem pipa-kantong magma, periodisasi, model matematis dan sebagainya. Gempa volkanik yang disebabkan aktivitas magma

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24

Chalokwu, Christopher I., Alexei A. Ariskin, and Evgeny V. Koptev-Dvornikov. "Magma dynamics at the base of an evolving mafic magma chamber: Incompatible element evidence from the Partridge River intrusion, Duluth Complex, Minnesota, USA." Geochimica et Cosmochimica Acta 60, no. 24 (1996): 4997–5011. http://dx.doi.org/10.1016/s0016-7037(96)00294-3.

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25

Schwindinger, Kathleen R. "Particle dynamics and aggregation of crystals in a magma chamber with application to Kilauea Iki olivines." Journal of Volcanology and Geothermal Research 88, no. 4 (1999): 209–38. http://dx.doi.org/10.1016/s0377-0273(99)00009-8.

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26

Strehlow, K., J. H. Gottsmann, and A. C. Rust. "Poroelastic responses of confined aquifers to subsurface strain and their use for volcano monitoring." Solid Earth 6, no. 4 (2015): 1207–29. http://dx.doi.org/10.5194/se-6-1207-2015.

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Abstract. Well water level changes associated with magmatic unrest can be interpreted as a result of pore pressure changes in the aquifer due to crustal deformation, and so could provide constraints on the subsurface processes causing this strain. We use finite element analysis to demonstrate the response of aquifers to volumetric strain induced by pressurized magma reservoirs. Two different aquifers are invoked – an unconsolidated pyroclastic deposit and a vesicular lava flow – and embedded in an impermeable crust, overlying a magma chamber. The time-dependent, fully coupled models simulate c

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27

Woods, Andrew W., and Michael J. Stock. "Some fluid mechanical constraints on crystallization and recharge within sills." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2139 (2019): 20180007. http://dx.doi.org/10.1098/rsta.2018.0007.

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The injection of hot magma into a sill can lead to heating and melting of the walls and roof of the reservoir while the injected magma cools and crystallizes. If the crystals are relatively dense, they will try to sediment from the injected magma to form a cumulate layer. In this cumulate layer, the crystals form a porous framework which traps the melt as it is built up. As the melt within the sill continually cools and precipitates dense crystals, there will be a gradual reduction in the density of the remaining silicate liquid. As a result, the melt which is progressively trapped in the pore

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28

Kamiyama, Hiroyuki, Takashi Nakajima, and Hikari Kamioka. "Magmatic Stratigraphy of the Tilted Tottabetsu Plutonic Complex, Hokkaido, North Japan: Magma Chamber Dynamics and Pluton Construction." Journal of Geology 115, no. 3 (2007): 295–314. http://dx.doi.org/10.1086/512754.

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29

Furnes, H., B. Hellevang, B. Robins, and A. Gudmundsson. "Geochemical stratigraphy of the lavas of the Solund-Stavfjord Ophiolite Complex, W. Norway, and magma-chamber dynamics." Bulletin of Volcanology 65, no. 6 (2003): 441–57. http://dx.doi.org/10.1007/s00445-002-0271-9.

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30

Kouli, Maria, and Karen St. Seymour. "Plagioclase microtextures and their importance for magma chamber dynamics – examples from Lesvos, Hellas and Teide, Canary Islands." Neues Jahrbuch für Mineralogie - Abhandlungen 182, no. 3 (2006): 323–36. http://dx.doi.org/10.1127/0077-7757/2006/0054.

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31

Tepley, Frank J., and Jon P. Davidson. "Mineral-scale Sr-isotope constraints on magma evolution and chamber dynamics in the Rum layered intrusion, Scotland." Contributions to Mineralogy and Petrology 145, no. 5 (2003): 628–41. http://dx.doi.org/10.1007/s00410-003-0481-y.

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32

Kogarko, Lia N., and Troels F. D. Nielsen. "Compositional Variation of Eudialyte-Group Minerals from the Lovozero and Ilímaussaq Complexes and on the Origin of Peralkaline Systems." Minerals 11, no. 6 (2021): 548. http://dx.doi.org/10.3390/min11060548.

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The Lovozero complex, Kola peninsula, Russia and the Ilímaussaq complex in Southwest Greenland are the largest known layered peralkaline intrusive complexes. Both host world-class deposits rich in REE and other high-tech elements. Both complexes expose spectacular layering with horizons rich in eudialyte group minerals (EGM). We present a detailed study of the composition and cryptic variations in cumulus EGM from Lovozero and a comparison with EGM from Ilímaussaq to further our understanding of peralkaline magma chambers processes. The geochemical signatures of Lovozero and Ilímaussaq EGM are

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33

Strehlow, K., J. H. Gottsmann, and A. C. Rust. "Poroelastic responses of confined aquifers to subsurface strain changes and their use for volcano monitoring." Solid Earth Discussions 7, no. 2 (2015): 1673–729. http://dx.doi.org/10.5194/sed-7-1673-2015.

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Abstract. Well water level changes associated with magmatic unrest can be interpreted as a result of pore pressure changes in the aquifer due to crustal deformation, and so could provide constraints on the subsurface processes causing this strain. We use Finite Element Analysis to demonstrate the response of aquifers to volumetric strain induced by pressurised magma reservoirs. Two different aquifers are invoked – an unconsolidated pyroclastic deposit and a vesicular lava flow – and embedded in an impermeable crust, overlying a magma chamber. The time-dependent, fully coupled models simulate c

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34

Piegari, E., R. Di Maio, R. Carbonari, and R. Scandone. "Simulations of the emptying of a closed chamber by magma ascent dynamics based on self-organized fracture mechanisms." Journal of Volcanology and Geothermal Research 369 (January 2019): 113–20. http://dx.doi.org/10.1016/j.jvolgeores.2018.11.025.

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35

Casalini, Martina, Riccardo Avanzinelli, Arnd Heumann, et al. "Geochemical and radiogenic isotope probes of Ischia volcano, Southern Italy: Constraints on magma chamber dynamics and residence time." American Mineralogist 102, no. 2 (2017): 262–74. http://dx.doi.org/10.2138/am-2017-5724.

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36

Ariskin, Alexey, Leonid Danyushevsky, Georgy Nikolaev, et al. "The Dovyren Intrusive Complex (Southern Siberia, Russia): Insights into dynamics of an open magma chamber with implications for parental magma origin, composition, and Cu-Ni-PGE fertility." Lithos 302-303 (March 2018): 242–62. http://dx.doi.org/10.1016/j.lithos.2018.01.001.

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37

Elardo, S. M., and C. K. Shearer. "Magma chamber dynamics recorded by oscillatory zoning in pyroxene and olivine phenocrysts in basaltic lunar meteorite Northwest Africa 032." American Mineralogist 99, no. 2-3 (2014): 355–68. http://dx.doi.org/10.2138/am.2014.4552.

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38

Vachon, Rémi, Mohsen Bazargan, Christoph F. Hieronymus, Erika Ronchin, and Bjarne Almqvist. "Crystal rotations and alignment in spatially varying magma flows: 2-D examples of common subvolcanic flow geometries." Geophysical Journal International 226, no. 1 (2021): 709–27. http://dx.doi.org/10.1093/gji/ggab127.

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Summary Elongate inclusions immersed in a viscous fluid generally rotate at a rate that is different from the local angular velocity of the flow. Often, a net alignment of the inclusions develops, and the resulting shape preferred orientation of the particle ensemble can then be used as a strain marker that allows reconstruction of the fluid’s velocity field. Much of the previous work on the dynamics of flow-induced particle rotations has focused on spatially homogeneous flows with large-scale tectonic deformations as the main application. Recently, the theory has been extended to spatially va

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39

Petrova, V. V., and V. A. Rashidov. "Composition and origin of lavas from the Minami-Hiyoshi submarine volcano (Mariana arc)." Доклады Академии наук 485, no. 2 (2019): 198–201. http://dx.doi.org/10.31857/s0869-56524852198-201.

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This work is a link in a series of studies of Late Cenozoic submarine volcanoes of the island arcs in the western part of the Pacific Ocean, representing the first detailed Russian-language description of the material composition of the Minami-Hiyoshi submarine volcano, which is involved in the Hiyoshi volcanic complex (the northern part of the Mariana arc). This study was based on rock material dragged from the volcano during the 5th cruise of the R/V Vulkanolog. New original data on the structure, chemical and mineral compositions, and origin of volcanic lava were obtained. It was shown that

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40

Martí, Joan, Silvia Zafrilla, Joan Andújar, et al. "Controls of magma chamber zonation on eruption dynamics and deposits stratigraphy: The case of El Palomar fallout succession (Tenerife, Canary Islands)." Journal of Volcanology and Geothermal Research 399 (July 2020): 106908. http://dx.doi.org/10.1016/j.jvolgeores.2020.106908.

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41

Gauthier, Pierre-J., and Michel Condomines. "210Pb–226Ra radioactive disequilibria in recent lavas and radon degassing: inferences on the magma chamber dynamics at Stromboli and Merapi volcanoes." Earth and Planetary Science Letters 172, no. 1-2 (1999): 111–26. http://dx.doi.org/10.1016/s0012-821x(99)00195-8.

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42

Patel, Rahul, Raghav Gadgil, and D. Srinivasa Sarma. "Role of dyke geometry in understanding dyke-emplacement mechanisms and magma-chamber dynamics: A critical appraisal from the Chotanagpur Gneissic Complex, India." Journal of Volcanology and Geothermal Research 418 (October 2021): 107344. http://dx.doi.org/10.1016/j.jvolgeores.2021.107344.

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43

Tsepelev, I. A., A. T. Ismail-Zadeh, and O. E. Melnik. "3D Numerical Modeling of the Summit Lake Lava Flow, Yellowstone, USA." Izvestiya, Physics of the Solid Earth 57, no. 2 (2021): 257–65. http://dx.doi.org/10.1134/s1069351321020129.

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Abstract—Volcanic eruptions belong to the extreme events that change the Earth’s landscape and affect global climate and environment. Although special attention is given to super-eruptions, the non-explosive rhyolitic (highly viscous) eruptions and large lava flows are no less important. In this paper, we study an ancient lava flow with a volume of ~50 km3 in the Summit Lake region, Yellowstone, which is one of the best studied large intraplate igneous provinces. We develop three-dimensional (3D) numerical models of isothermal lava flow to analyze the influence of the underlying surface and

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44

Cardoso, Silvana S. S., and Andrew W. Woods. "Mixing by a turbulent plume in a confined stratified region." Journal of Fluid Mechanics 250 (May 1993): 277–305. http://dx.doi.org/10.1017/s0022112093001466.

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An experimental and theoretical study of the mixing produced by a plume rising in a confined stratified environment is presented. As a result of the pre-existing stable stratification, the plume penetrates only part way into the region; at an intermediate level it intrudes laterally forming a horizontal layer. As time evolves, this layer of mixed fluid is observed to increase in thickness. The bottom front advects downward in a way analogous to the first front in the filling box of Baines & Turner (1969), while the lateral spreading of the plume occurs at an ever-increasing level and an as

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45

Kamacı, Ömer, and Şafak Altunkaynak. "Magma chamber processes and dynamics beneath northwestern Anatolia: Insights from mineral chemistry and crystal size distributions (CSDs) of the Kepsut volcanic complex (NW Turkey)." Journal of Asian Earth Sciences 181 (September 2019): 103889. http://dx.doi.org/10.1016/j.jseaes.2019.103889.

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46

Melluso, Leone, Vincenzo Morra, Annamaria Perrotta, Claudio Scarpati, and Mariarosaria Adabbo. "The eruption of the Breccia Museo (Campi Flegrei, Italy): Fractional crystallization processes in a shallow, zoned magma chamber and implications for the eruptive dynamics." Journal of Volcanology and Geothermal Research 68, no. 4 (1995): 325–39. http://dx.doi.org/10.1016/0377-0273(95)00020-5.

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47

Wolff, J. A. "Physical properties of carbonatite magmas inferred from molten salt data, and application to extraction patterns from carbonatite–silicate magma chambers." Geological Magazine 131, no. 2 (1994): 145–53. http://dx.doi.org/10.1017/s0016756800010682.

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AbstractLittle is known about the physical properties of carbonatite magmas, making it difficult to predict dynamic behaviour in carbonatite-bearing magmatic systems. The viscosity of calcium-rich carbonatite magma is approximately estimated from molten salt data to be 0.1 Pa s at 700–800°C, while density is estimated at 2.3−2.5 × 103 kg m−3. The corresponding values for natrocarbonatite are 0.01 Pa s and 2.0−2.1 × 103 kg m−3. It is thus possible for carbonatite to be negatively buoyant with respect to some silicate magmas. The surface tension in air of carbonatite magmas is estimated at 0.25

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GINIBRE, CATHERINE, GERHARD WÖRNER, and ANDREAS KRONZ. "Structure and Dynamics of the Laacher See Magma Chamber (Eifel, Germany) from Major and Trace Element Zoning in Sanidine: a Cathodoluminescence and Electron Microprobe Study." Journal of Petrology 45, no. 11 (2004): 2197–223. http://dx.doi.org/10.1093/petrology/egh053.

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49

Mahood, Gail A., and Paula C. Cornejo. "Evidence for ascent of differentiated liquids in a silicic magma chamber found in a granitic pluton." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no. 1-2 (1992): 63–69. http://dx.doi.org/10.1017/s0263593300007756.

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ABSTRACTFluid dynamic modelling of crystallising calc-alkalic magma bodies has predicted that differentiated liquids will ascend as boundary layers and that accumulation of these buoyant liquids near chamber roofs will result in compositionally stratified magma chambers. This paper reports physical features in La Gloria Pluton that can be interpreted as trapped ascending differentiated liquids. Leucogranitic layers decimetres thick, which are locally stratified, are trapped beneath overhanging wall contacts. The same felsic magmas were also preserved where they were injected into the wall rock

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Sigmarsson, O., I. Vlastelic, R. Andreasen, et al. "Dynamic magma mixing revealed by the 2010 Eyjafjallajökull eruption." Solid Earth Discussions 3, no. 2 (2011): 591–613. http://dx.doi.org/10.5194/sed-3-591-2011.

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Abstract. Injection of basaltic magmas into silicic crustal holding chambers and subsequent mixing of the two components is a process that has been recognised since the late seventies to have resulted in explosive eruptions. Detailed reconstruction and assessment of the mixing process caused by such intrusion is now possible because of the exceptional time-sequence sample suite available from the tephra fallout of the 2010 summit eruption at Eyjafjallajökull volcano in South Iceland. From 14 to 19 April the tephra contains three glass types of basaltic, intermediate, and silicic compositions r

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