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Cited by 52Geological and Geochemical AnalysisGeological and Geophysical StudiesHigh-pressure geophysics and materials

Magma Storage and Extraction Associated with Plinian and Interplinian Activity at Santorini Caldera (Greece)

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Druitt, T. H., Mercier, M., Florentin, L., Deloule, E., Cluzel, N., Flaherty, T., Médard, E., Cadoux, A.·2016·Journal of Petrology
DOI 10.1093/petrology/egw015
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Abstract

Santorini caldera has had a long history of plinian eruptions and caldera collapses, separated by 20-40 kyr interplinian periods.We have carried out a study to constrain magma storage/extraction depths beneath the caldera.We analysed H 2 O in 138 olivine-, pyroxene-and plagioclase-hosted melt inclusions from plinian and interplinian products from the last 200 kyr, and CO 2 , S, Cl, F and dD in various subsets of these.The dataset includes 64 inclusions in products of the Minoan plinian eruption of the late 17th century BCE.All the melt inclusions were ellipsoidal and isolated, with no textural evidence for volatile leakage.Mafic melt inclusions contain 1-4 wt % H 2 O and up to 1200 ppm CO 2 , 1200 ppm S, 2000 ppm Cl and 400 ppm F; silicic inclusions contain 2-7 wt % H 2 O, up to 150 ppm CO 2 , up to 400 ppm S, 2000-6000 ppm Cl and 600-1000 ppm F. The dD values of 27 representative inclusions (-37 to -104%) are intermediate between mantle and slab values and rule out significant H 2 O loss by hydrogen diffusion from olivine-hosted inclusions.H 2 O, S and Cl behave compatibly in melt inclusion suites varying from mafic to silicic in composition, showing that entrapment of many melt inclusions took place under volatile-saturated conditions.Most Santorini melts are saturated in a free COHSCl vapour phase at depths of less than $10 km; the only exceptions are basaltic melts from a single interplinian eruption, which were volatile-undersaturated up to K 2 O contents of $1 wt %.The rhyolitic melt of the Minoan eruption probably contained a free hypersaline liquid phase.H 2 O þ CO 2 saturation pressures were calculated using suitably calibrated solubility models to estimate pre-eruptive magma storage depths.Magmas feeding plinian eruptions were stored at >4 km (>100 MPa) and extracted over depth intervals of several kilometres.Plagioclase phenocrysts in rhyodacitic pumice from the Minoan eruption have cores containing melt inclusions trapped at depths up to 10-12 km (320 MPa), and rims (also orthopyroxene and clinopyroxene) containing inclusions trapped at 4-6 km (100-160 MPa).This records late-stage silicic replenishment of a <2 km thick shallow magma chamber, rather than extraction of melts syneruptively over the entire depth range.The plagioclase cores were carried from depth in the ascending melt, then overgrown by the rims in the shallow chamber.Exsolution of volatiles during ascent may have caused the replenishment melt to inject as a bubbly plume, causing mixing prior to eruption.This would explain (1) the homogeneity of the Minoan rhyodacitic magma, and (2) extraction of melt inclusions from the entire pressure spectrum during the first eruptive phase.Most silicic magmas feeding eruptions of the interplinian periods were stored in reservoirs at shallow depths (2-3 km) compared with those feeding the plinian eruptions (>4 km).Melt inclusions from the AD 726 eruption of Kameni Volcano yield a pre-eruptive storage depth of $4 km, which is similar to that estimated from geodetic data for the inflation source during the 2011-2012 period of caldera unrest; this supports a magmatic origin of the unrest.The level of pre-AD 726 magma storage beneath Kameni was deeper than that of earlier silicic interplinian eruptions, perhaps owing to changes in crustal stress caused by the Minoan eruption.Combined with previously published results, the melt inclusion data provide a time-integrated image of the crustal plumbing system.Mantle-derived basalts are injected into the lower crust, where they fractionate to produce evolved melts in bodies of hot crystal mush.Evolved residual melts separate from their parent mushes in the 8 to >15 km depth interval, then ascend rapidly into the upper crust, where they either crystallize or accumulate as bodies of eruptible, crystal-poor magma.

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  • The Minoan eruption of Thera was not a particularly sulfur-rich eruption.

    “the composition and nature of the Thera magma suggest that the Minoan eruption of Thera was not a particularly sulfur-rich eruption [153-155]”

    From Second Intermediate Period date for the Thera (Santorini) eruption and historical implications (2022) · cites this paper as [155]

    The ‘Sulphur and halogens’ section (page unavailable) reports that sulfur in silicic melt inclusions falls to about 100 ppm, supporting the inference that the predominantly rhyodacitic Minoan magma was not especially sulfur-rich. It does not establish the sulfur content or emissions of the eruption as a whole, which is the broader claim made in the citing sentence. (LLM, conf=0.82)

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Research works printed but not linked: 57

  1. And ujar, J., Scaillet, B., Pichavant, M. & Druitt, T. H. (2015). Differentiation conditions of a basaltic magma from Santorini and its bearing on basalt-andesite to andesite magma production in arc settings. Journal of Petrology 56, 765-794.
  2. Annen, C. (2009). From plutons to magma chambers: Thermal constraints on the accumulation of eruptible silicic magma in the upper crust. Earth and Planetary Science Letters 284, 409-416.
  3. Annen, C., Blundy, J. D. & Sparks, R.S. J. (2006). The genesis of intermediate and silicic magmas in deep crustal hot zones. Journal of Petrology 47, 505-539.
  4. Barton, M., Salters, V. J. M. & Huijsmans, J. P.P. (1983). Sr iso- tope and trace element evidence for the role of continental crust in calc-alkaline volcanism on Santorini and Milos, Aegean Sea, Greece. Earth and Planetary Science Letters 63, 273-291.
  5. Botcharnikov, R. E., Holtz, F. & Behrens, H. (2007). The effect of CO 2 on the solubility of H 2 O-Cl fluids in andesitic melt. European Journal of Mineralogy 19, 671-680.
  6. Bucholz, C. E., Gaetani, G. A., Behn, M. D. & Shimizu, N. (2013). Post-entrapment modification of volatiles and oxygen fuga- city in olivine-hosted melt inclusions. Earth and Planetary Science Letters 374, 145-155.
  7. Cadoux, A., Scaillet, B., Druitt, T. H. & Deloule, E. (2014). Magma storage conditions of large Plinian eruptions of Santorini Volcano (Greece). Journal of Petrology 55, 1129-1171.
  8. Cashman, K. V. & Giordano, G. (2014). Calderas and magma reservoirs. Journal of Volcanology and Geothermal Research 288, 28-45.
  9. Cashman, K. V. & Sparks, R. S. J. (2013). How volcanoes work: A 25 year perspective. Geological Society of America Bulletin 125, 664-690.
  10. Chesner, C. A. & Luhr, J. F. (2010). A melt inclusion study of the Toba Tuffs, Sumatra, Indonesia. Journal of Volcanology and Geothermal Research 197, 259-278.
  11. Colucci, S., de' Michieli Vitturi, M., Neri, A. & Palladino, D. M. (2014). An integrated model of magma chamber, conduit and column for the analysis of sustained explosive erup- tions. Earth and Planetary Science Letters 404, 98-110.
  12. Dixon, J. E., Stolper, E. M. & Holloway, J. R. (1995). An experi- mental study of water and carbon dioxide solubilities in mid-ocean ridge basaltic liquids. Part I. Calibration and solu- bility models. Journal of Petrology 36, 1607-1631.
  13. Druitt, T. H. (2014). New insights into the initiation and venting of the Bronze-Age eruption of Santorini (Greece), from com- ponent analysis. Bulletin of Volcanology 76, 794.
  14. Druitt, T. H. & Francaviglia, V. (1992). Caldera formation on Santorini and the physiography of the islands in the late Bronze Age. Bulletin of Volcanology 54, 484-493.
  15. Fabbro, G., Druitt, T. H. & Scaillet, S. (2013). Evolution of the crus- tal magma plumbing system during the build-up to the 22-ka caldera-forming eruption of Santorini (Greece). Bulletin of Volcanology 75, 767.
  16. Faure, F. & Schiano, P. (2005). Experimental investigation of equilibration conditions during forsterite growth and melt inclusion formation. Earth and Planetary Science Letters 236, 882-898.
  17. Feuillet, N. (2013). The 2011-2012 unrest at Santorini rift: stress interaction between active faulting and volcanism. Geophysical Research Letters 40, 3532-3537.
  18. Fine, G. & Stolper, E. (1986). Carbon dioxide in basaltic glasses: concentration and speciation. Earth and Planetary Science Letters 76, 263-278.
  19. Foumelis, M., Trasatti, E., Papageorgiou, E., Stramondo, S. & Parcharidis, I. (2013). Monitoring Santorini volcano (Greece) breathing from space. Geophysical Journal International 193, 161-170.
  20. Francalanci, L., Vougioukalakis, G. E., Perini, G. & Manetti, P. (2005). A west-east traverse along the magmatism of the south Aegean volcanic arc in the light of volcanological, chemical and isotope data. In: Fytikas, M. & Vougioukalakis, G. E. (eds) The South Aegean Active Volcanic Arc: Present Knowledge and Future Perspectives. Developments in Volcanology. Amsterdam: Elsevier, pp. 65-111.
  21. Gardner, J. E., Thomas, R. M. E., Jaupart, C. & Tait, S. R. (1996). Fragmentation of magma during Plinian volcanic eruptions. Bulletin of Volcanology 58, 144-162.
  22. Gertisser, R., Preece, K. & Keller, J. (2009). The Plinian Lower Pumice 2 eruption, Santorini, Greece: magma evolution and volatile behaviour. Journal of Volcanology and Geothermal Research 186, 387-406.
  23. Gudmundsson, A. (2012). Magma chambers: Formation, local stresses, excess pressures, and compartments. Journal of Volcanology and Geothermal Research 237-238, 19-41.
  24. Hartley, M. E., Maclennan, J., Edmonds, M. E. & Thordarson, T. (2014). Reconstructing the deep CO 2 degassing behaviour of large basaltic fissure eruptions. Earth and Planetary Science Letters 393, 120-131.
  25. Huijsmans, J. P. P. & Barton, M. (1989). Polybaric geochemical evolution of two shield volcanoes from Santorini, Aegean Sea, Greece: evidence for zoned magma chambers from cyclic compositional variations. Journal of Petrology 30, 583-625.
  26. Huijsmans, J. P. P., Barton, M. & Salters, V. J. M. (1988). Geochemistry and evolution of the calc-alkaline volcanic complex of Santorini, Aegean Sea, Greece. Journal of Volcanology and Geothermal Research 34, 283-306.
  27. Humphreys, M. C. S., Menand, T., Blundy, J. D. & Klimm, K. (2008). Magma ascent rates in explosive eruptions: Constraints from H 2 O diffusion in melt inclusions. Earth and Planetary Science Letters 270, 25-40.
  28. Konstantinou, K. I. (2010). Crustal rheology of the Santorini- Amorgos zone: Implications for the nucleation depth and rupture extent of the 9 July 1956 Amorgos earthquake, southern Aegean. Journal of Geodynamics 50, 400-409.
  29. Le Voyer, M., Asimow, P. D., Mosenfelder, J. L., Guan, Y., Wallace, P. J., Schiano, P. & Eiler, J. M. (2014). Zonation of H 2 O and F concentrations around melt inclusions in olivines. Journal of Petrology 55, 685-707.
  30. Liu, Y., Anderson, A. T. & Wilson, C. J. N. (2007). Melt pockets in phenocrysts and decompression rates of silicic magmas be- fore fragmentation. Journal of Geophysical Research 112, B06204.
  31. Lu, F., Anderson, A. T. & Davis, A. M. (1995). Diffusional gradients at the crystal/melt interface and their effect on the compos- ition of melt inclusions. Journal of Geology 103, 591-597.
  32. Marianelli, P., Me ´trich, N. & Sbrana, A. (1999). Shallow and deep reservoirs involved in magma supply of the 1944 erup- tion of Vesuvius. Bulletin of Volcanology 61, 48-63.
  33. Michaud, V., Clocchiatti, R. & Sbrana, S. (2000). The Minoan and post-Minoan eruptions, Santorini (Greece), in the light of melt inclusions: chlorine and sulphur behavior. Journal of Volcanology and Geothermal Research 99, 195-214.
  34. Moune, S., Sigmarsson, O., Thordarson, T. & Gauthier, P. J. (2007). Recent volatile evolution in the magmatic system of Hekla volcano, Iceland. Earth and Planetary Science Letters 255, 373-389.
  35. Neave, D. A., Maclennan, J., Edmonds, M. & Thordarson, T. (2014). Melt mixing causes negative correlation of trace element enrichment and CO 2 content prior to an Icelandic eruption. Earth and Planetary Science Letters 400, 272-283.
  36. Newman, A. V., Stiros, S., Feng, L., et al. (2012). Recent geodetic unrest at Santorini Caldera, Greece. Geophysical Research Letters 39(L06309).
  37. Nichols, I. A. (1978). Primary basaltic magmas for the pre-cal- dera volcanic rocks of Santorini. In: Doumas, C. (ed.) Thera and the Aegean World II, 1. London: Thera Foundation, pp. 109-120.
  38. Oth, A. (2013). On the characteristics of earthquake stress re- lease variations in Japan. Earth and Planetary Science Letters 377-378, 132-141.
  39. Papoutsis, I., Papanikolaou, X., Floyd, M., Ji, K. H., Kontoes, C., Paradissis, D. & Zacharis, V. (2012). Mapping inflation at Santorini volcano, Greece, using GPS and InSAR. Geophysical Research Letters 40, 267-272.
  40. Parks, M. M., Moore, J. D. P., Papanikolaou, X., Biggs, J., Mather, T. A., Pyle, D. M., Raptakis, C., Paradissis, D., Hooper, A., Parsons, B. & Nomikou, P. (2015). From quies- cence to unrest: 20 years of satellite geodetic measurements at Santorini volcano, Greece. Journal of Geophysical Research 120, 1309-1328.
  41. Pinel, V. & Jaupart, C. (2003). Magma chamber behavior be- neath a volcanic edifice. Journal of Geophysical Research 108, 1-17.
  42. Pioli, L., Erlund, E., Johnson, E., Cashman, K., Wallace, P., Rosi, M. & Delgado Granados, H. (2008). Explosive dynamics of violent Strombolian eruptions: The eruption of Par ıcutin Volcano 1943-1952 (Mexico). Earth and Planetary Science Letters 271, 359-368.
  43. Plank, T., Kelley, K. A., Zimmer, M. M., Hauri, E. H. & Wallace, P. J. (2013). Why do mafic arc magmas contain $4 wt % water on average? Earth and Planetary Science Letters 364, 168-179.
  44. Pyle, D. M. (1990). New estimates for the volume of the Minoan eruption. In: Hardy, D. A. (ed.) Thera and the Aegean World III, vol 2. Thera Foundation, London, pp 113-121.
  45. Rust, A. C. & Cashman, K. V. (2011). Permeability controls on expansion and size distributions of pyroclasts. Journal of Geophysical Research 116, B11202.
  46. Scaillet, B. & Evans, B. W. (1999). The 15 June 1991 eruption of Mount Pinatubo. I. Phase equilibria and pre-eruption P-T- fO2-fH2O conditions of the dacite magma. Journal of Petrology 40, 381-411.
  47. Scaillet, B. & Pichavant, M. (2005). A model of sulphur solubility for hydrous mafic melts: application to the determination of magmatic fluid compositions of Italian volcanoes. Annals of Geophysics 48, 671-698.
  48. Shaw, A. M., Hauri, E. H., Fischer, T. P., Hilton, D. R. & Kelley, K. A. (2008). Hydrogen isotopes in Mariana arc melt inclusions: Implications for subduction dehydration and the deep-Earth water cycle. Earth and Planetary Science Letters 275, 138-145.
  49. Sigurdsson, H., Carey, S. & Devine, J. D. (1990). Assessment of the mass, dynamics and the environmental effects of the Minoan eruption of Santorini Volcano. In: Hardy, D. A. (ed.) Thera and the Aegean World III, 2. London: Thera Foundation, pp. 100-112.
  50. Solano, J. M. S., Jackson, M. D., Sparks, R. S. J., Blundy, J. D. & Annen, C. (2012). Melt segregation in deep crustal hot zones: a mechanism for chemical differentiation, crustal assimila- tion and the formation of evolved magmas. Journal of Petrology 53, 1999-2026.
  51. Thomas, R. & Sparks R. S. J. (1992). Cooling of tephra during fallout from eruption columns. Bulletin of Volcanology 54, 542-553.
  52. Tirel, C., Gueydan, F., Tiberi, C. & Brun, J.-P. (2004). Aegean crustal thickness inferred from gravity inversion. Geodynamical implications. Earth and Planetary Science Letters 228, 267-280.
  53. Vaggelli, M., Pellegrini, M., Vougioukalakis, G., Innocenti, S. & Francalanci, I. (2009). Highly Sr radiogenic tholeiitic mag- mas in the latest inter-Plinian activity of Santorini volcano, Greece. Journal of Geophyical Research 114, 1-21.
  54. Vespa, M., Keller, J. & Gertisser, R. (2006). Inter-Plinian explo- sive activity of Santorini volcano (Greece) during the past 150,000 years. Journal of Volcanology and Geothermal Research 153, 262-286.
  55. Villemant, B., Mouatt, J. & Michel, A. (2008). Andesitic magma degassing investigated through H 2 O vapour-melt partition- ing of halogens at Soufrie `re Hills Volcano, Montserrat (Lesser Antilles). Earth and Planetary Science Letters 269, 212-229.
  56. Wallace, P. J. (2005). Volatiles in subduction zone magmas: con- centrations and fluxes based on melt inclusion and volcanic gas data. Journal of Volcanology and Geothermal Research 140, 217-240.
  57. Zellmer, G., Turner, S. & Hawkesworth, C. (2000). Timescales of destructive plate margin magmatism: new insights from Santorini, Aegean volcanic arc. Earth and Planetary Science Letters 174, 265-281.

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Authors
Druitt, T. H., Mercier, M., Florentin, L., Deloule, E., Cluzel, N., Flaherty, T., Médard, E., & Cadoux, A.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Université d'Orléans (FR)
Corresponding author
Druitt, T. H.
ORCID
Venue
Journal of Petrology
Publisher
Oxford University Press (OUP)
Published
2016-03
Volume
57
Issue
3
Pages
461-494
ISSN
  • 0022-3530 (ISSN-L)
  • 1460-2415
DOI
10.1093/petrology/egw015
OpenAlex
W2413320830
Cited by
52
References
2
Citations by year
2026: 7 · 2025: 4 · 2024: 5 · 2023: 3 · 2022: 6 · 2021: 5 · 2020: 8 · 2019: 6 · 2018: 4 · 2017: 3 · 2016: 1
FWCI
4.60
Type
journal article
Language
en
Open access
Locations
  • Journal of Petrology (publishedVersion)
  • HAL (submittedVersion, cc-by-nc-nd)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • Agence Nationale de la Recherche (ANR-10, ANR-10-LABX-0006)
  • European Regional Development Fund (ANR-10-LABX-0006)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geology › Geological and Geophysical Studies
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › High-pressure geophysics and materials
Keywords
Santorini caldera, magma storage depth, magma extraction, Plinian eruption, melt inclusions, water in magma, chlorine, fluorine, hydrogen isotopes, Minoan eruption, rhyodacite, plagioclase phenocrysts, caldera collapse

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