 | Williamson, B.J., Di Muro, A., Horwell, C.J., Spieler, O., Llewellin, E.W. (2010) Injection of vesicular magma into an andesitic dome at the effusive–explosive transition. Earth and Planetary Science Letters, 295 (1) 83-90 doi:10.1016/j.epsl.2010.03.027 | Journal (article/letter/editorial) | | 2010 Editor: R.W. Carlson Keywords: Soufrière Hills volcano Montserrat melt inclusions dome collapse a...m3) dome collapse eruption of the Soufrière Hills volcano, Montserrat (21st September 1997) was found to...dome just prior to the onset of dome collapse. Quartz, plagioclase and hornblende phenocrysts contain...on fracture surfaces. Fractures within ruptured quartz phenocrysts were infilled with glass, whereas those...relatively early fracturing (decompression) of the quartz. This interpretation is supported by slightly higher |  | Plail, Melissa, Edmonds, Marie, Humphreys, Madeleine C.S., Barclay, Jenni, Herd, Richard A. (2014) Geochemical evidence for relict degassing pathways preserved in andesite. Earth and Planetary Science Letters, 386. 21-33 doi:10.1016/j.epsl.2013.10.044 | Journal (article/letter/editorial) | | Elliott Keywords: volcanic degassing Soufrière Hills Volcano cordierite pseudotachylyte metals andesite...preserved in lavas erupted from Soufrière Hills Volcano, Montserrat. Textural evidence suggests that...Iceland (Tuffen et al., 2003). At Soufrière Hills Volcano, Montserrat (SHV), swarms of low frequency earthquakes...found in andesite lava blocks at Soufrière Hills Volcano, Montserrat (Fig. 1). We interpret the bands...style and mineralisation. 2. Background Soufrière Hills Volcano (SHV), active since 1995, is characterised |  | Kendrick, J. E., Lavallée, Y., Hess, K.-U., De Angelis, S., Ferk, A., Gaunt, H. E., Meredith, P. G., Dingwell, D. B., Leonhardt, R. (2014) Seismogenic frictional melting in the magmatic column. Solid Earth, 5 (1). 199-208 doi:10.5194/se-5-199-2014 | Journal (article/letter/editorial) | | crosscutting a large block erupted in 2010 at Soufrière Hills volcano (SHV) reveals evidence of faulting and...drumbeat seismicity at SHV. Frictional melting of Soufrière Hills andesite in a high velocity rotary shear apparatus...Neuberg et al., 2006; De Angelis, 2009). At Soufrière Hills volcano (SHV) this seismicity has been attributed...amphibole and orthopyroxene phenocrysts, with some quartz grains and FeTi oxide (Ti-magnetite to ilmenite)...fine grained (10–40 µm), equant and well sorted quartz, plagioclase, FeTi oxides, pyroxene, feldspar, |  | Plail, Melissa, Edmonds, Marie, Woods, Andrew W., Barclay, Jenni, Humphreys, Madeleine C.S., Herd, Richard A., Christopher, Thomas (2018) Mafic enclaves record syn-eruptive basalt intrusion and mixing. Earth and Planetary Science Letters, 484. 30-40 doi:10.1016/j.epsl.2017.11.033 | Journal (article/letter/editorial) | | University of Durham, Durham, UK e Montserrat Volcano Observatory, Montserrat f Seismic Research Centre, University...enclaves hosted by andesite erupted at the Soufrière Hills Volcano between 1995 and 2010 yield insights into...(Clynne, 1999; Tepley et al., 1999), Augustine volcano, Alaska (2006) (De Angelis et al., 2013; Nakamura...Costa Rica (Reagan et al., 1987) and Soufrière Hills Volcano, Montserrat (Murphy et al., 2000). Mafic enclaves...petrological evidence for mixing and mingling. In Soufrière Hills lavas, the presence of plagioclase, pyroxene |  | | Journal (article/letter/editorial) | | vapour–melt partitioning of halogens at Soufrière Hills Volcano, Montserrat (Lesser Antilles) Benoît Villemant... Jaupart Abstract Magma degassing at Soufrière Hills Volcano (SHV) is characterised by an almost permanent...Keywords: Halogens; Eruptive style; Volcanic gases; Volcano monitoring; Atmosphere chemistry 1. Introduction...014 The on-going eruption at Soufrière Hills Volcano (SHV), Montserrat, has produced a large variety...Antilles (e.g. Soufrière of Guadeloupe, Komorowski et al. (2005) and Soufriere Hills). SHV has been almost |  | Wallace, Paul A., De Angelis, Sarah H., Hornby, Adrian J., Kendrick, Jackie E., Clesham, Stephen, von Aulock, Felix W., Hughes, Amy, Utley, James E.P., Hirose, Takehiro, Dingwell, Donald B., Lavallée, Yan (2019) Frictional melt homogenisation during fault slip: Geochemical, textural and rheological fingerprints. Geochimica et Cosmochimica Acta, 255. 265-288 doi:10.1016/j.gca.2019.04.010 | Journal (article/letter/editorial) | | (1) an amphibole-bearing andesite (Soufrière Hills Volcano, Montserrat); (2) an amphibole-poor dacite (Santiaguito...homogenisation; Faulting; Frictional melt; Viscosity; Volcano 1. Introduction 1.1. Frictional melting Frictional...amphibole-bearing andesite from Soufrière Hills Volcano (SHV), Montserrat; (2) an amphibole-poor dacite...1; Table 1; Table 2). The sample from Soufrière Hills Volcano (SHV) was andesitic (59.6 wt.% SiO2; Fig...%; up to 2.5 mm), and 10 minor clinopyroxene, quartz, and Fe-Ti oxides. The groundmass (Fig. 1d) was |  | Edmonds, M., Kohn, S.C., Hauri, E.H., Humphreys, M.C.S., Cassidy, M. (2016) Extensive, water-rich magma reservoir beneath southern Montserrat. Lithos, 252. 216-233 doi:10.1016/j.lithos.2016.02.026 | Journal (article/letter/editorial) | | water-rich magma reservoir beneath southern Montserrat M. Edmonds, S.C. Kohn, E.H. Hauri, M.C.S. Humphreys... water-rich magma reservoir beneath southern Montserrat, LITHOS (2016), doi: 10.1016/j.lithos.2016.02... water-rich magma reservoir beneath southern Montserrat PT M. Edmonds1*, S. C. Kohn2, E. H. Hauri3...ac.uk MA Abstract South Soufriere Hills and Soufriere Hills volcanoes are two km apart at the southern...southern end of the island of Montserrat, West Indies. Their magmas are distinct geochemically, despite |  | | Journal (article/letter/editorial) | | magnitude and duration (Huppert and Woods 2002) and volcano monitoring. The exsolution of H2O from silicate...[at an oxygen fugacity of ~fayalite–magnetite– quartz (FMQ) + 1 log unit] (Fig. 2B, 2C), caused by the...photomicrograph of a lava dome rock from Soufrière Hills Volcano (Montserrat) showing rounded white vesicles,...Silicate Melts in the Crust 1.0 Soufrière Hills Volcano (Montserrat), measurements of the gas composition...in fact observed during eruption of the Soufrière Hills Volcano: the observed volume decrease (deflation) |  | | Journal (article/letter/editorial) | | recent eruption of volcanoes such as Soufrière Hills Volcano (Montserrat), Mount Pinatubo (Philippines), and...Mount St Helens (Rutherford et al. 1985; Soufrière Hills, Montserrat (Couch et al. 2003a); Fish Canyon (Bachmann...Rutherford 2002) and andesites of the Soufrière Hills, Montserrat (Couch et al. 2003b). This study seeks...the volcanic conduit (i.e., Soufière Hills Volcano, Montserrat, Voight et al. 1999; Wylie et al. 1999)...eruptions such as Mount St. Helens and Soufrière Hills, Montserrat (Geschwind and Rutherford 1995; Rutherford |  | | Report (issue) | | A Volcano Rekindled: The Renewed Eruption of Mount St. Helens, 2004–2006 Edited by David R. Sherrod,...spines (Scott and others, this volume, 388 A Volcano Rekindled: The Renewed Eruption of Mount St. Helens...Helens, Washington; Unzen, Japan; and Soufrière Hills, Montserrat, confirm and extend these early concepts...of slightly different bulk composition. Unzen volcano, Japan, active from 1990 to 1995, constructed a...dome (Nakada and others, 1995a). Soufrière Hills volcano, Montserrat, intermittently active since 1995 |  | | Journal (article/letter/editorial) | | as respirable particles in volcanic ash such as quartz, cristobalite, or tridymite. A method to rapidly...proportions of crystalline silica polymorphs, such as quartz or crisa兲 Author to whom correspondence should...chosen were found in ash from the Soufrière Hills volcano, Montserrat, and were selected because they potentially...analysis using XRD. The mineralogy of the Soufrière Hills volcanic complex is well constrained 共e.g....the range of cristobalite found previously in Montserrat rocks兲. The remaining wt % was then proportioned |  | | Journal (article/letter/editorial) | | significance of this must be established on a volcano by PT volcano basis, the similarity in behaviour of 230Th...end-members in the system Qtz-DiCaAl2O4-Fo (equivalent to quartz-clinopyroxene-nepheline-olivine). Cotectics for...MA concentrations have been determined for one volcano (Tofua). All have low total-alkali whole rock compositions...Vanuatu AC 2007; Melekhova et al., 2015). Yasur Volcano on Tanna Island, with its resurgent caldera and...(Pelletier et al., 1998; Calmant et al., 2003). Yasur Volcano has consistently produced magmas of basaltic trachyandesite |  | Pallister, John S., Thornber, Carl R., Cashman, Katharine V., Clynne, Michael A., Lowers, Heather, Mandeville, Charles W., Brownfield, Isabelle K., Meeker, Gregory P. (2008) Petrology of the 2004-2006 Mount St. Helens lava dome -- implications for magmatic plumbing and eruption triggering. Professional Paper 1750_30. US Geological Survey doi:10.3133/pp175030 | Report (issue) | | A Volcano Rekindled: The Renewed Eruption of Mount St. Helens, 2004–2006 Edited by David R. Sherrod,...October 2004. During the ensuing two years, the volcano extruded more than 80×106 m3 of gas-poor, crystal-rich...extensively crystallized to a cotectic assemblage of quartz, tridymite, and Na- and K-rich feldspar microlites...of matrix glasses and presence of tridymite and quartz in the high-silica rhyolite matrix glass indicate...magma reservoir at a depth of about 648 A Volcano Rekindled: The Renewed Eruption of Mount St. Helens |  | Wallace, Paul A., Lamb, Oliver D., De Angelis, Silvio, Kendrick, Jackie E., Hornby, Adrian J., Díaz-Moreno, Alejandro, González, Pablo J., von Aulock, Felix W., Lamur, Anthony, Utley, James E.P., Rietbrock, Andreas, Chigna, Gustavo, Lavallée, Yan (2020) Integrated constraints on explosive eruption intensification at Santiaguito dome complex, Guatemala. Earth and Planetary Science Letters, 536. 116139 doi:10.1016/j.epsl.2020.116139 | Journal (article/letter/editorial) | | compositions. The phases represent albite (Ab), quartz (Qtz) and orthoclase (Or). (b–d) Quantitative assessment..., 1999), 1997 vulcanian explosions at Soufrière Hills Volcano (Clarke et al., 2007), 2006 Merapi dome...eruption style was observed in 2010 at Merapi volcano (Indonesia), with the eruptive products showing...Mount St. Helens, Pallister et al., 2008; Soufrière Hills volcano, Horwell et al., 2013). The formation of...Observations of eruptive activity at Santiaguito volcano, Guatemala. J. Volcanol. Geotherm. Res. 136, 297–302 |  | | Journal (article/letter/editorial) | | people) lives within 100 km of a historically active volcano (Small and Naumann, 2001) and may be at risk of...the toxicity of the andesitic Soufrière Hills volcanic ash (Montserrat, West Indies) which generated...(Hardy and Aust, 1995; Kane, 1996). For the Soufrière Hills ash, Horwell et al. (2003a) used Electron Paramagnetic...generated around three times the quantity of HOU than a quartz control powder (Min-USil 5, U.S. Silica, Berkeley...Research on Cancer, 1997; Elias et al., 2000). This quartz, widely employed for in vitro and in vivo experimental |  | Ryan, Amy G., Friedlander, Elizabeth A., Russell, James K., Heap, Michael J., Kennedy, Lori A. (2018) Hot pressing in conduit faults during lava dome extrusion: Insights from Mount St. Helens 2004–2008. Earth and Planetary Science Letters, 482. 171-180 doi:10.1016/j.epsl.2017.11.010 | Journal (article/letter/editorial) | | volcanoes such as Mount St. Helens (MSH), Soufrière Hills, Mount Unzen and Mount Pelée erupt spines mantled...Motomura, 1999; Nakada et al., 1999), Soufrière Hills volcano, Montserrat (1995–2003 and 2005–2013; Watts et...spines, including those erupted at MSH, Soufrière Hills volcano, Mount Unzen, Mount Usu (Japan) and Mount...the cores, is 0.01–0.02 for all samples. ides, quartz, tridymite and cristobalite (cf. Pallister et al...produced during the 1995–1999 eruption of Soufrière Hills volcano have a different character: the gouge that |  | Horwell, C. J., Sargent, P., Andronico, D., Lo Castro, M. D., Tomatis, M., Hillman, S. E., Michnowicz, S. A. K., Fubini, B. (2017) The iron-catalysed surface reactivity and health-pertinent physical characteristics of explosive volcanic ash from Mt. Etna, Italy. Journal of Applied Volcanology, 6. doi:10.1186/s13617-017-0063-8 | Journal (article/letter/editorial) | | Mount Etna is Europe’s largest and most active volcano. In recent years, it has displayed enhanced explosive...Introduction Mt. Etna, Sicily is Europe’s largest volcano and is one of the world’s most active strato-volcanoes...basaltic ash. Since 1998, the normally-effusive volcano has produced a * Correspondence: Claire.horwell@durham...applied to ash, on samples from the Soufrière Hills volcano, Montserrat. Further to this, Horwell et al....degrees, including lunar dust (Turci et al. 2015), quartz (Fubini 1998) and asbestos (Fubini et al. 1995) |  | De Pablo Galan, L., Doval, M., La Iglesia, A., Soriano, J., Chavez, L. (2013) Occurrence of silica polymorphs nanocrystals in tuffaceous rocks, Province of the Mesa Central, Mexico, and their formation from subcritical Si-rich fluids. American Mineralogist, 98 (5) 977-985 doi:10.2138/am.2013.4371 | Journal (article/letter/editorial) | | transformation of cristobalite and trydimite to quartz did not occur. We conclude that glasses did not...recognized in volcanic ash from the Soufrière Hills Volcano in Montserrat, in the British West Indies (Woods...respireable fraction of rhyolitic ash from the Chaitén Volcano in the Chilean Patagonia (Reich et al. 2010). They...11, Fig. 1), characterized by vitric material, quartz, feldspar, plagioclase, smectite, and comparatively...– – X X cristobalite – – – – tridymite – – – – quartz X X – – smectite X X X X plagioclase X X X X feldspar |  | Lavallée, Y., Hirose, T., Kendrick, J.E., De Angelis, S., Petrakova, L., Hornby, A.J., Dingwell, D.B. (2014) A frictional law for volcanic ash gouge. Earth and Planetary Science Letters, 400. 177-183 doi:10.1016/j.epsl.2014.05.023 | Journal (article/letter/editorial) | | (Ceresis, 1985), caldera subsidence (Kokelaar, 2007), volcano spreading (Acocella, 2010; Borgia et al., 2000)...to 9:1 for Lipari (Italy), 13:7 for Soufrière Hills (Montserrat), 1:1 for Unzen (Japan) and 1:24 for...friction of different ash from a) Lipari, b) Soufrière Hills, c) Unzen, and d) Mount St. Helens volcanoes...2008; Sato and Sato, 2009), 1997 extrusion at Soufrière Hills (Costa et al., 2012; Neuberg et al., 2006;...slip in this experimental gouge sample from Soufrière Hills. f) Backscattered electron image showing shear |  | | Journal (article/letter/editorial) | | environmental impact (Aiuppa et al., 2006) and volcano monitoring (Hirabayashi et al., 1986). Pre-eruptive...model In order to evaluate Cl degassing from a volcano, the Cl exsolution from ascending magma is modeled...HCl/SO2 ratio was also observed at the Soufrière Hills volcano, with high ratios during domeforming eruption...summit crater and the east rift zone of the Kilauea volcano (Gerlach and Graeber, 1985), or in contrasting...2006. Majorion bulk deposition around an active volcano (Mt. Etna, Italy). Bull. Volcanol. 68, 255–265 |  | Cooper, George F., Blundy, Jon D., Macpherson, Colin G., Humphreys, Madeleine C. S., Davidson, Jon P. (2019) Evidence from plutonic xenoliths for magma differentiation, mixing and storage in a volatile-rich crystal mush beneath St. Eustatius, Lesser Antilles. Contributions to Mineralogy and Petrology, 174 (5) doi:10.1007/s00410-019-1576-4 | Journal (article/letter/editorial) | | glass from plutonic xenoliths from a single, arc volcano. We use these data to establish a model of the...N The Quill F/G (D&W 2011) St. Kitts Nevis Montserrat 2 km Guadeloupe 16˚N Caribbean Sea Dominica...until pyroclastic deposits from the younger Quill volcano linked the two islands (Roobol and Smith 2004)...of the broadest compositional ranges of any arc volcano, from 52.0 to 72.3 wt% S iO 2, and can be classified...water contents measured in melt inclusions from Montserrat (Humphreys et al. 2009; Cassidy et al. 2015) |  | De Angelis, Sarah H., Larsen, Jessica F., Coombs, Michelle L., Utley, James E. P., Dunn, Andrew (2020) Phase equilibrium of a high-SiO2 andesite at $$f_{{0_{2} }}$$f02 = RRO: implications for Augustine Volcano and other high-$$f_{{0_{2} }}$$f02 arc andesites. Contributions to Mineralogy and Petrology, 175 (3) doi:10.1007/s00410-020-1663-6 | Journal (article/letter/editorial) | | andesite at f02 = RRO: implications for Augustine Volcano and other high‑f02 arc andesites Sarah H. De Angelis1...62.5 wt%) from the 2006 eruption of Augustine Volcano, Alaska. Experiments were conducted under H2O...°C and 120–170 MPa. Crystallization of euhedral quartz was accompanied by biotite and small amounts of...at andesitic arc volcanoes. Keywords Augustine volcano · Magma storage · Phase equilibria · Andesite ·...Angelis editor@tornilloscientific.com 1 Alaska Volcano Observatory, Geophysical Institute, University |  | | Journal (article/letter/editorial) | | textures a b s t r a c t The rhyodacite of Ruiz Peak Volcano (New Mexico, USA) is an exceptional rock because...is extremely rare, but occurs in the Ruiz Peak Volcano rhyodacite (New Mexico, USA), where one third of...and Kudo (1985). 2. Geological setting Ruiz Peak Volcano is located in the Jemez Mountains (Fig. 2), a region...reconstructive transformation of cristobalite to quartz. Horwell et al. (2013) have recently reviewed where...similar to those proposed for the Soufrière Hills volcano, Montserrat (Couch et al., 2001) and for the |  | Cassidy, Mike, Cole, Paul.D., Hicks, Kelby E., Varley, Nick R., Peters, Nial, Lerner, Allan H. (2015) Rapid and slow: Varying magma ascent rates as a mechanism for Vulcanian explosions. Earth and Planetary Science Letters, 420. 73-84 doi:10.1016/j.epsl.2015.03.025 | Journal (article/letter/editorial) | | Sakurajima (Japan) and the Soufriere Hills volcano (Montserrat) (Self et al., 1979; Morrissey and Mastin...Background Volcán de Colima, Mexico, is the most active volcano in North America and commonly displays Vulcanian...up to 5.4 km from the volcano (Varley et al., 2010a). Since 2003, the volcano has also produced smaller...3. Methods Our multi-disciplinary approach to volcano monitoring, involves the measurement of SO2 fluxes...weather periods, where clouds were not obscuring the volcano were chosen for the SO2 measurements, and other |  | | Journal (article/letter/editorial) | | andesite from the 2008 eruption of Kasatochi Island volcano† Owen K. Neill1,*, Jessica F. Larsen2, Pavel E...Drive, Fairbanks, Alaska 99775, U.S.A. 3 Alaska Volcano Observatory, State of Alaska, Division of Geological...August 7–8, 2008, eruption of Kasatochi Island volcano, located in the central Aleutians Islands, Alaska...to eruption. In a study of Soufriere Hills Volcano, Montserrat, Couch et al. (2003) suggested that highAn...top of the system. Further study of the Soufriere Hills by NEILL ET AL.: MIXING AND CRYSTAL TRANSFER AT |
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