Experimental constraints on the conditions of formation of highly calcic plagioclase microlites at the Soufrière Hills Volcano, Montserrat

Journal of Petrology

Volumn 44, Issue 8, 2003, Pages 1455-1475

  Couch, S ^a,b   Harford, C L ^a   Sparks, R S J ^a   Carroll, M R ^c  

^a UNIVERSITY OF BRISTOL   (United Kingdom)

^b UNIVERSITY OF EAST ANGLIA   (United Kingdom)

^c UNIVERSITY OF CAMERINO   (Italy)

Author keywords

Experiment; Glass evolution; Montserrat; Plagioclase; Self mixing

Indexed keywords

ANDESITE; CRYSTALLIZATION; EXPERIMENTAL STUDY; MAGMA; PETROLOGY; PHASE EQUILIBRIUM; PLAGIOCLASE; VOLCANO;

MONTSERRAT;

EID: 0042035611     PISSN: 00223530     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (33)

1. Barclay, J., Rutherford, M. J., Carroll, M. R., Murphy, M. D., Devine, J. D., Gardner, J. E. & Sparks, R. S. J. (1998). Experimental phase equilibria constraints on pre-eruptive storage conditions of the Soufrière Hills magma. Geophysical Research Letters 25, 3437-3440.
2. Baxter, P. J., Bonadonna, C., Dupree, R., Hards, V. I, Kohn, S. C., Murphy, M. D., Nichols, A., Nicholson, R. A., Norton, G. E., Searl, A., Sparks, R. S. J. & Vickers, B. P. (1999). Cristobalite in volcanic ash of the Soufrière Hills Volcano, Montserrat, British West Indies. Science 283, 1142-1145.
3. Blundy, J. & Cashman, K. V. (2001). Magma ascent and crystallisation at Mount St Helens, 1980-1986. Contributions to Mineralogy and Petrology 140, 631-650.
4. 2O in phonolitic melts. American Mineralogist 82, 549-556.
5. Cashman, K. V. (1992). Groundmass crystallisation of Mount St Helens dacite, 1980-1986: a tool for interpreting shallow magmatic processes. Contributions to Mineralogy and Petrology 109, 431-449.
6. Cole, P., Calder E. S., Sparks, R. S. J., Clarke, A. B., Druitt, T. H., Young, S. R., Herd, R. A., Harford, C. L. & Norton, G. E. (2002). Deposits from dome-collapse and fountain-collapse pyroclastic flows at Soufrière Hills Volcano, Montserrat. In: Druitt T. H. & Kokelaar, B. P. (eds) The Eruption of the Soufrière Hills Volcano, Montserrat, from 1995 to 1999. Geological Society, London, Memoirs 21, 231-262.
7. Couch, S., Sparks, R. S. J. & Carroll, M. R. (2001). Mineral disequilibrium in lavas explained by convective self-mixing in open magma chambers. Nature 411, 1037-1039.
8. Couch, S., Sparks, R. S. J. & Carroll, M. R. (2003). The kinetics of degassing-induced crystallization at Soufrière Hills Volcano, Montserrat. Journal of Petrology 44, 1477-1502.
9. Devine, J. D., Murphy, M. D., Rutherford, M. J., Barclay, J., Sparks, R. S. J., Carroll, M. R., Young, S. R. & Gardner, J. E . (1998a). Petrologic evidence for pre-eruptive pressure-temperature conditions, and recent reheating, of andesitic magma erupting at the Soufrière Hills volcano, Montserrat, WI. Geophysical Research Letters 25, 3669-3672.
10. Devine, J. D., Rutherford, M. J. & Gardner, J. E. (1998b). Petrologic determination of ascent rates for the 1995-1997 Soufrière Hills volcano andesitic magma. Geophysical Research Letters 25, 3673-3676.
11. Druitt, T. H. Young, S. R., Baptie, B., Bonadonna, C., Calder, E. S., Clarke, A. B., Cole, P., Harford, C., Herd, R. A., Luckett, R., Ryan, G. & Voight, B. (2002). Episodes of repetitive Vulcanian explosions and fountain collapse at Soufrière Hills volcano, Montserrat, In: Druitt, T. H. & Kokelaar, B. P. (eds) The Eruption of Soufrière Hills Volcano, Montserrat, from 1995 to 1999. Geological Society, London, Memoirs 21, 281-306.
12. Edmonds, M., Pyle, D. M. & Oppenheimer, C. (2001). A model for degassing at the Soufrière Hills volcano, Montserrat, West Indies, based on geochemical data. Earth and Planetary Science Letters 186, 159-173.
13. Gardner, J. E., Hilton, M. & Carroll, M. R. (2000). Bubble growth in highly viscous melts during continuous decompression from high pressure. Geochimica et Cosmochimica, Acta 64, 1473-1483.
14. Hammer, J. E., Cashman, K. V. & Voight, B. (2000). Magmatic processes revealed by textural and compositional trends in Merapi dome lavas. Journal of Volcanology and Geothermal Research 100, 165-192.
15. Harford, C. L. (2000). The volcanic evolution of Montserrat. Ph.D. thesis, University of Bristol.
16. Harford, C. L. & Sparks, R. S. J. (2001). Recent remobilisation of shallow-level intrusions on Montserrat revealed by hydrogen isotope composition of amphibole. Earth and Planetary Science Letters 185, 285-297.
17. Holland, T. H. & Blundy, J. (1994). Non-ideal interactions in calcic amphiboles and their bearing on amphibole-plagioclase thermometry. Contributions to Mineralogy and Petrology 116, 433-447.
18. Martel, C., Bourdier, J.-L., Pichavant, M. & Traineau, H. (2000) Textures, water content and degassing of silicic andesites from recent plinian and dome-forming eruptions at Mount Pelée volcano (Martinique, Lesser Antilles arc). Journal of Volcanology and Geothermal Research 96, 191 -206.
19. Morgan, G. B. & London, D. (1996). Optimising the electron microscope analysis of hydrous alkali aluminosilicate glasses. American Mineralogist 81, 1176-1185.
20. Murphy, M. D., Sparks, R. S. J., Barclay, J., Carroll, M. R. & Brewer, T. S. (2000). Remobilisation of andesite magma by intrusion of mafic magma at the Soufrière Hills volcano, Montserrat, West Indies. Journal of Petrology 41, 21-42.
21. Robertson, R. E., Cole, P., Sparks, R. S. J., Harford, C., Lejeune, A.-M., McGuire, W. J., Miller, A. D., Murphy, M. D., Norton, G. E., Stevens, N. S. & Young, S. R. (1998). The explosive eruption of Soufrière Hills volcano, Montserrat. Geophysical Research Letters 25, 3689-3692.
22. Robertson, R. E., Aspinall, W. P., Herd, R. A., Norton, G. E., Sparks, R. S. J. & Young, S. R. (2000). The 1995-1998 eruption of the Soufrière Hills volcano, Montserrat, WI. Philosophical Transactions of the Royal Society of London, Series A 358, 1619-1637.
23. 5 Pascals) pressure and at higher temperatures. US Geological Survey Bulletin 1452, 1-453.
24. Rouse, P. J. (2000). Experimental phase equilibria of sodic phonolites from Montana Blanca, Tenerife, Ph.D. thesis, University of Bristol.
25. Rutherford, M. J., Devine, J. D. & Barclay, J. (1998). Changing conditions and ascent rates during the Soufrière Hills eruption on Montserrat. Geological Society of America Today 8, 1-7.
26. Sparks, R. S. J., Young, S. R., Barclay, J., Calder, E. S., Cole, P., Darroux, B., et al. (1998). Magma production and growth of the lava dome of the Soufrière Hills volcano, Montserrat, West Indies: November 1995 to December 1997. Geophysical Research Letters 25, 3421-3424.
27. Sparks, R. S. J., Murphy, M. D., Lejeune, A.-M., Watts, R., Barclay, J. & Young, S. R. (2000). Control on the emplacement of the andesite lava dome of the Soufrière Hills volcano by degassing-induced crystallisation. Terra Nova 12, 14-20.
28. Stewart, M. L. & Fowler, A. D. (2001). The nature and occurrence of discrete zoning in plagioclase from recently erupted andesitic volcanic rocks, Montserrat. Journal of Volcanology and Geothermal Research 106, 243-253.
29. Taylor, J. R., Wall, V. J. & Pownceby, M. I. (1992). The calibration and application of accurate redox sensors. American Mineralogist 77, 284-295.
30. 2O. Geological Society of America, Memoir 74.
31. Wright, T. L. & Doherty, P. C. (1970). A linear programming and least squares computer method for solving petrologic problems. Geological Society of America Bulletin 81, 1995-2008.
32. Young, S. R., Sparks, R. S. J., Aspinall, W. P., Lynch, L., Miller, A. D., Robertson, R. E. & Shepherd, J. B. (1998). Overview of the eruption of Soufrière Hills volcano, Montserrat, 18 July to December 1997. Geophysical Research Letters 25, 3389-3392.
33. Zellmer, G. F., Sparks, R. S. J., Hawkesworth, C. J. & Wiedenbeck, M. (2003). Magma emplacement and remobilization timescales beneath Montserrat: insights from Sr and Ba zonation in plagioclase phenocrysts. Journal of Petrology 44, 1413-1431.