LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Cassidy, Mike; Castro, Jonathan; Helo, Christoph; Troll, Valentin R.; Deegan, Frances M.; Muir, Duncan; Neave, David; Mueller, Sebastian (2016)
Publisher: Institute of Geosciences, University of Mainz, D-55122 Mainz, Germany
Languages: English
Types: Article
Subjects: Geochemistry, Geokemi
Identifiers:doi:10.1130/G38411.1
Magma reservoirs underneath volcanoes grow through episodic emplacement of magma batches. These pulsed magma injections can substantially alter the physical state of the resident magma by changing its temperature, pressure, composition, and volatile content. Here we examine plagioclase phenocrysts in pumice from the 2014 Plinian eruption of Kelud (Indonesia) that record the progressive capture of small melt inclusions within concentric growth zones during crystallization inside a magma reservoir. High-spatial-resolution Raman spectroscopic measurements reveal the concentration of dissolved H2O within the melt inclusions, and provide insights into melt-volatile behavior at the single crystal scale. H2O contents within melt inclusions range from ∼0.45 to 2.27 wt% and do not correlate with melt inclusion size or distance from the crystal rim, suggesting that minimal H2O was lost via diffusion. Instead, inclusion H2O contents vary systematically with anorthite content of the host plagioclase (R2 = 0.51), whereby high anorthite content zones are associated with low H2O contents and vice versa. This relationship suggests that injections of hot and H2O-poor magma can increase the reservoir temperature, leading to the dilution of melt H2O contents. In addition to recording hot and H2O-poor conditions after these injections, plagioclase crystals also record relatively cold and H2O-rich conditions such as prior to the explosive 2014 eruption. In this case, the elevated H2O content and increased viscosity may have contributed to the high explosivity of the eruption. The point at which an eruption occurs within such repeating hot and cool cycles may therefore have important implications for explaining alternating eruptive styles.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Baker, D.R., 2008, The fidelity of melt inclusions as records of melt composition: Contributions to Mineralogy and Petrology, v. 156, p. 377-395, doi:10.1007/s00410-008-0291-3.
    • Behrens, H., Roux, J., Neuville, D.R., and Siemann, M., 2006, Quanticfiation of dissolved H 2O in silicate glasses using confocal microRaman spectroscopy: Chemical Geology, v. 229, p. 96-112, doi:10.1016/j.chemgeo.2006.01.014.
    • Blundy, J., and Cashman, K., 2001, Ascent-driven crystallisation of dacite magmas at Mount St Helens, 1980-1986: Contributions to Mineralogy and Petrology, v. 140, p. 631-650, doi:10.1007 /s004100000219.
    • Blundy, J., Cashman, K., and Humphreys, M., 2006, Magma heating by decompression-driven crystallization beneath andesite volcanoes: Nature, v. 443, p. 76-80, doi:10.1038/nature05100.
    • Blundy, J., Cashman, K.V., Rust, A., and Witham, F., 2010, A case for CO2-rich arc magmas: Earth and Planetary Science Letters, v. 290, p. 289-301, doi:10.1016/j.epsl.2009.12.013.
    • Burgisser, A., and Bergantz, G.W., 2011, A rapid mechanism to remobilize and homogenize highly crystalline magma bodies: Nature, v. 471, p. 212- 215, doi:10.1038/nature09799.
    • Caricchi, L., Burlini, L., Ulmer, P., Gerya, T., Vassalli, M., and Papale, P., 2007, Non-Newtonian rheology of crystal-bearing magmas and implications for magma ascent dynamics: Earth and Planetary Science Letters, v. 264, p. 402-419, doi:10.1016 /j.epsl.2007.09.032.
    • Cashman, K., and Blundy, J., 2013, Petrological cannibalism: The chemical and textural consequences of incremental magma body growth: Contributions to Mineralogy and Petrology, v. 166, p. 703- 729, doi:10.1007/s00410-013-0895-0.
    • Caudron, C., Mazot, A., and Bernard, A., 2012, Carbon dioxide dynamics in Kelud volcanic lake: Journal of Geophysical Research, v. 117, B05102, doi:10.1029/2011JB008806.
    • Caudron, C., Taisne, B., Garces, M., Alexis, L.P., and Mialle, P., 2015, On the use of remote infrasound and seismic stations to constrain the eruptive sequence and intensity for the 2014 Kelud eruption: Geophysical Research Letters, v. 42, p. 6614- 6621, doi:10.1002/2015GL064885.
    • Cooper, K.M., and Kent, A.J.R., 2014, Rapid remobilisation of magmatic crystals kept in cold storage: Nature, v. 506, p. 480-483, doi:10.1038 /nature12991.
    • Gaetani, G.A., O'Leary, J.A., Shimizu, N., Bucholz, C.E., and Newville, M., 2012, Rapid reequilibration of H2O and oxygen fugacity in olivine-hosted melt inclusions: Geology, v. 40, p. 915-918, doi: 10.1130/G32992.1.
    • Giordano, D., Russell, J.K., and Dingwell, D.B., 2008, Viscosity of magmatic liquids: A model: Earth and Planetary Science Letters, v. 271, p. 123-134, doi:10.1016/j.epsl.2008.03.038.
    • Hammer, J.E., and Rutherford, M.J., 2002, An experimental study of the kinetics of decompressioninduced crystallization in silicic melt: Journal of Geophysical Research, v. 107, p. ECV 8-1-ECV 8-24, doi:10.1029/2001JB000281.
    • Humphreys, M.C.S., Menand, T., Blundy, J.D., and Klimm, K., 2008, Magma ascent rates in explosive eruptions: Constraints from H2O diffusion in melt inclusions: Earth and Planetary Science Letters, v. 270, p. 25-40, doi:10.1016/j.epsl.2008 .02.041.
    • Hartley, M.E., Neave, D.A., Maclennan, J., Edmonds, M., and Thordarson, T., 2015, Diffusive over-hydration of olivine-hosted melt inclusions: Earth and Planetary Science Letters, v. 425, p. 168-178, doi:10.1016/j.epsl.2015.06.008.
    • Jeffery, A.J., et al., 2013, The pre-eruptive magma plumbing system of the 2007-2008 dome-forming eruption of Kelut volcano, East Java, Indonesia: Contributions to Mineralogy and Petrology, v. 166, p. 275-308, doi:10.1007/s00410 -013-0875-4.
    • Kent, A.J.R., 2008, Melt inclusions in basaltic and related volcanic rocks, in Putirka, K.D., and Tepley, F.J., eds., Minerals, inclusions and volcanic processes: Reviews in Mineralogy and Geochemistry, v. 69, p. 273-331, doi:10.2138/rmg.2008.69.8.
    • Kristiansen, N.I., Prata, A.J., Stohl, A., and Carn, S.A., 2015, Stratospheric volcanic ash emissions from the 13 February 2014 Kelut eruption: Geophysical Research Letters, v. 42, p. 588-596, doi: 10.1002/2014GL062307.
    • Lloyd, A.S., Plank, T., Ruprecht, P., Hauri, E.H., and Rose, W., 2013, Volatile loss from melt inclusions in pyroclasts of differing sizes: Contributions to Mineralogy and Petrology, v. 165, p. 129-153, doi:10.1007/s00410-012-0800-2.
    • Long, D.A., 1977, Raman spectroscopy: New York, McGraw-Hill, 292 p.
    • Menand, T., Annen, C., and de Saint Blanquat, M., 2015, Rates of magma transfer in the crust: Insights into magma reservoir recharge and pluton growth: Geology, v. 43, p. 199-202, doi:10.1130 /G36224.1.
    • Metrich, N., and Wallace, P.J., 2008, Volatile abundances in basaltic magmas and their degassing paths tracked by melt inclusions, in Putirka, K.D., and Tepley, F.J., eds., Minerals, inclusions and volcanic processes: Reviews in Mineralogy and Geochemistry, v. 69, p. 363-402, doi:10.2138 /rmg.2008.69.10.
    • Mollo, S., Putirka, K., Iezzi, G., Del Gaudio, P., and Scarlato, P., 2011, Plagioclase-melt (dis)equilibrium due to cooling dynamics: Implications for thermometry, barometry and hygrometry: Lithos, v. 125, p. 221-235, doi:10.1016/j.lithos .2011.02.008.
    • Portnyagin, M., Almeev, R., Matveev, S., and Holtz, F., 2008, Experimental evidence for rapid water exchange between melt inclusions in olivine and host magma: Earth and Planetary Science Letters, v. 272, p. 541-552, doi:10.1016/j.epsl .2008.05.020.
    • Putirka, K.A., 2005, Igneous thermometers and barometers based on plagioclase plus liquid equilibria: Tests of some existing models and new calibrations: American Mineralogist, v. 90, p. 336-346, doi:10.2138/am.2005.1449.
    • Ruprecht, P., and Bachmann, O., 2010, Pre-eruptive reheating during magma mixing at Quizapu volcano and the implications for the explosiveness of silicic arc volcanoes: Geology, v. 38, p. 919-922, doi:10.1130/G31110.1.
    • Ruprecht, P., and Wörner, G., 2007, Variable regimes in magma systems documented in plagioclase zoning patterns: El Misti stratovolcano and Andahua monogenetic cones: Journal of Volcanology and Geothermal Research, v. 165, p. 142-162, doi:10.1016/j.jvolgeores.2007.06.002.
    • Siebert, L., and Simkin, T., 2002, Volcanoes of the world: An illustrated catalog of Holocene volcanoes and their eruptions: Smithsonian Institution Global Volcanism Program, Digital Information Series GVP-3, http://volcano.si.edu/search_volcano.cfm.
    • Sparks, R.S.J., Sigurdsson, H., and Wilson, L., 1977, Magma mixing: A mechanism for triggering acid explosive eruptions: Nature, v. 267, p. 315-318, doi:10.1038/267315a0.
    • Wallace, P.J., 2005, Volatiles in subduction zone magmas: Concentrations and fluxes based on melt inclusion and volcanic gas data: Journal of Volcanology and Geothermal Research, v. 140, p. 217- 240, doi:10.1016/j.jvolgeores.2004.07.023.
    • Waters, L.E., and Lange, R.A., 2015, An updated calibration of the plagioclase-liquid hygrometer-thermometer applicable to basalts through rhyolites: American Mineralogist, v. 100, p. 2172-2184, doi:10.2138/am-2015-5232.
    • Manuscript received 27 July 2016
    • Revised manuscript received 23 September 2016 Manuscript accepted 27 September 2016
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article