Contributions to Mineralogy and Petrology

, Volume 162, Issue 5, pp 929–943 | Cite as

Bubble nucleation in rhyolite and dacite melts: temperature dependence of surface tension

Original Paper

Abstract

Surface tension (σ) profoundly influences the ability of gas bubbles to nucleate in silicate melts. To determine how temperature impacts σ, experiments were carried out in which high-silica rhyolite melts with 5 wt% dissolved water were decompressed at temperatures that ranged from 775 to 1,085°C. Decompressions were also carried out using dacite melts with 4.3 wt% dissolved water at 1,150°C. Water bubbles nucleated in rhyolite only when decompressions exceeded 95 MPa at all temperatures. Bubbles nucleated in number densities that increased as decompression increased and at hotter temperatures at a given amount of decompression. After correcting decompression amounts for temperature differences, values for σ were estimated from nucleation rates and found to vary between 0.081 and 0.093 N m−1. Surface tension decreases as temperature increases from 775 to 875°C, but then increases as temperature increases to 1,085°C. Those values overlap previous results, but only when melt viscosity is less than 104 Pa s. For low-viscosity rhyolite, there is a strong correlation of σ with temperature, in which σ increases by 6.9 × 10−5 N m−1 C−1. That variation is robust for 5–9 wt% dissolved water, as long as melt viscosity is ≤104 Pa s. More viscous rhyolite deviates from that correlation probably because nucleation is retarded in stiffer melts. Bubbles nucleated in dacite when decompressions exceeded 87 MPa, and occured in one or more events as decompression increased. Surface tension is estimated to be 0.083 (±0.001) N m−1 and when adjusted for temperature agrees well with previous results for colder and wetter dacite melts. At a given water content, dacite melts have lower surface tensions than rhyolite melts, when corrected to a fixed temperature.

Keywords

Bubble Nucleation Rhyolite Dacite Kinetics Temperature 

References

  1. Bagdassarov N, Dorfman A, Dingwell BB (2000) Effect of alkalis, phosphorus, and water on the surface tension of haplogranite melt. Am Miner 85:33–40Google Scholar
  2. Blander M, Katz JL (1975) Bubble nucleation in liquids. Am Inst Chem Eng J 21:33–40Google Scholar
  3. Burgisser A, Gardner JE (2005) Experimental constraints on degassing and permeability in volcanic conduit flow. Bull Volcanol 67:42–56CrossRefGoogle Scholar
  4. Cluzel N, Laporte D, Provost A, Kannewischer I (2008) Kinetics of heterogeneous bubble nucleation in rhyolitic melts: implications for the number density of bubbles in volcanic conduits and for pumice textures. Contrib Mineral Petrol 156:745–763. doi:10.1007/s00410-008-0313-1 Google Scholar
  5. Gardner JE (2007a) Bubble coalescence in rhyolitic melts during decompression from high pressure. J Volcanol Geotherm Res 166:161–176CrossRefGoogle Scholar
  6. Gardner JE (2007b) Heterogeneous bubble nucleation in highly viscous silicate melts during instantaneous decompression from high pressure. Chem Geol 236:1–12CrossRefGoogle Scholar
  7. Gardner JE, Denis M-H (2004) Rates of heterogeneous bubble nucleation in silicate melts. Geochim Cosmochim Acta 68:3587–3597CrossRefGoogle Scholar
  8. Gardner JE, Rutherford M, Carey S, Sigurdsson H (1995) Experimental constraints on pre-eruptive water contents and changing magma storage prior to explosive eruptions of Mount St. Helens volcano. Bull Volcanol 57:1–17Google Scholar
  9. Gardner JE, Hilton M, Carroll MR (1999) Experimental constraints on degassing of magma: isothermal bubble growth during continuous decompression from high pressure. Earth Planet Sci Lett 168:201–218CrossRefGoogle Scholar
  10. Giordano D, Russell JK, Dingwell DB (2008) Viscosity of magmatic liquids: a model. Earth Planet Sci Lett 271:123–134CrossRefGoogle Scholar
  11. Hamada M, Laporte D, Cluzel N, Koga KT, Kawamoto T (2010) Simulating bubble number density of rhyolitic pumices from Plinian eruptions: constraints from fast decompression experiments. Bull Volcanol 72:735–746Google Scholar
  12. Holtz F, Behrens H, Dingwell DB, Johannes W (1995) H2O solubility in haplogranitic melts: compositional, pressure, and temperature dependence. Am Miner 80:94–108Google Scholar
  13. Hurwitz S, Navon O (1994) Bubble nucleation in rhyolitic melts: experiments at high pressure, temperature, and water content. Earth Planet Sci Lett 122:267–280CrossRefGoogle Scholar
  14. Iacono Marziano G, Schmidt BC, Dolfi D (2007) Equilibrium and disequilibrium degassing of a phonolitic melt (Vesuvius AD 79 “white pumice”) simulated by decompression experiments. J Volcanol Geotherm Res 161:151–164CrossRefGoogle Scholar
  15. Kawamoto T, Hirose K (1994) Au-Pd containers for melting experiments on iron and water bearing systems. Eur J Mineral 6:381–385Google Scholar
  16. Ketcham RA (2005) Computational methods for quantitative analysis of three-dimensional features in geological specimens. Geosphere 1:32–41CrossRefGoogle Scholar
  17. Ketcham RA (2006) Accurate three-dimensional measurements of features in geological materials from X-ray computed tomography data. In: Desrues J, Viggiani G, Besuelle P (eds) Advances in X-ray tomography for geomaterials. ISTE, London, pp 143–148CrossRefGoogle Scholar
  18. King TB (1951) The surface tension and structure of silicate slags. J Soc Glass Technol 35:241–259Google Scholar
  19. Kingery WD (1959) Surface tension of some liquid oxides and their temperature coefficients. J Am Ceram Soc 42:6–10CrossRefGoogle Scholar
  20. Klug C, Cashman KV, Bacon CR (2002) Structure and physical characteristics of pumice from the climatic eruption of Mount Mazama (Crater Lake). Oregon Bull Volcanol 64:486–501CrossRefGoogle Scholar
  21. Liu Y, Zhang Y, Behrens H (2005) Solubility of H2O in rhyolitic melts at low pressure and a new empirical model for mixed H2O–CO2 solubility in rhyolitic melts. J Volcanol Geotherm Res 143:219–235CrossRefGoogle Scholar
  22. Mangan MT, Sisson TW (2000) Delayed, disequilibrium degassing in rhyolite magma: decompression experiments and implications for explosive volcanism. Earth Planet Sci Lett 183:441–455CrossRefGoogle Scholar
  23. Mangan MT, Sisson TW (2005) Evolution of melt-vapor surface tension in silicic volcanic systems: experiments with hydrous melts. J Geophys Res 110:B01202. doi:10.1029/2004JB003215 CrossRefGoogle Scholar
  24. Mangan MT, Sisson TW, Hankins WB (2004) Decompression experiments identify kinetic controls on explosive silicic eruptions. Geophys Res Letts 31:L08605. doi:10.1029/2004GL019509 CrossRefGoogle Scholar
  25. Moore G, Vennemann T, Carmichael ISE (1998) An empirical model for the solubility of H2O in magmas to 3 kilobars. Am Miner 83:36–42Google Scholar
  26. Mourtada-Bonnefoi CC, Laporte D (1999) Experimental study of homogeneous bubble nucleation in rhyolitic magmas. Geophys Res Lett 26:3505–3508CrossRefGoogle Scholar
  27. Mourtada-Bonnefoi CC, Laporte D (2002) Homogeneous bubble nucleation in rhyolitic magmas: an experimental study of the effect of H2O and CO2. J Geophys Res 107. doi:10.1029/2001JB000290
  28. Mourtada-Bonnefoi CC, Laporte D (2004) Kinetics of bubble nucleation in a rhyolitic melt: an experimental study of the effect of ascent rate. Earth Planet Sci Lett 218:521–537CrossRefGoogle Scholar
  29. Murase T, McBirney AR (1973) Properties of some common igneous rocks and their melts at high temperature. Geol Soc Am Bull 84:3563–3592CrossRefGoogle Scholar
  30. Navon O, Lyakhovsky V (1998) Vesiculation processes in silicic magmas. In: Gilbert JS, Sparks RSJ (eds) The physics of explosive volcanic eruptions, vol 145. Geological Society of London, London, pp 27–50Google Scholar
  31. Ohlhorst S, Behrens H, Holtz F (2001) Compositional dependence of molar absorptivities of near-infrared OH and H2O bands in rhyolitic to basaltic glasses. Chem Geol 174:5–20CrossRefGoogle Scholar
  32. Otsu N (1979) A threshold selection method from gray-level histograms. IEEE Trans Syst Man Cybern 9:62–66CrossRefGoogle Scholar
  33. Papale P, Moretti R, Barbato D (2006) The compositional dependence of the saturation surface of H2O + CO2 fluids in silicate melts. Chem Geol 229:78–95CrossRefGoogle Scholar
  34. Sisson TW, Grove TL (1993) Experimental investigations of he role of H2O in calc-alkaline differentiation and subduction zone magmatism. Contrib Miner Pet 113:143–166CrossRefGoogle Scholar
  35. Spera FJ (2000) Physical properties of magma. In: Sigurdsson H (ed) Encyclopedia of volcanoes. Academic Press, San Diego, pp 171–190Google Scholar
  36. Toramaru A (1989) Vesiculation process and bubble size distributions in ascending magmas with constant velocities. J Geophys Res 94:17523–17542CrossRefGoogle Scholar
  37. Toramaru A (2006) BND (bubble number density) decompression rate meter for explosive volcanic eruptions. J Volcanol Geotherm Res 154:303–316CrossRefGoogle Scholar
  38. Walker D, Mullins O Jr (1981) Surface tension of natural silicate melts from 1,200 to 1,500°C and implications for melt structure. Contrib Miner Pet 76:455–462CrossRefGoogle Scholar
  39. Zhang Y, Belcher R, Ihinger PD, Wang L, Xu Z, Newman S (1997) New calibration of infrared measurement of dissolved water is rholitic glasses. Geochim Cosmochim Acta 61:3089–3100Google Scholar
  40. Zhang Y, Xu Z, Zhu M, Wang H (2007) Silicate melt properties and volcanic eruptions. Rev Geophys 45:RG4004. doi:10.1029/2006RG000216 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Department of Geological Sciences, Jackson School of GeosciencesThe University of Texas at AustinAustinUSA

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