Pressures of crystallization of Icelandic Magmas

Journal of Petrology

Volumn 49, Issue 3, 2008, Pages 465-492

  Kelley, Daniel F ^a   Barton, Michael ^a  

^a OHIO STATE UNIVERSITY   (United States)

Author keywords

Cotectic crystallization; Depth; Iceland rift zones; Magma chamber; Pressure; Volcanic glass

Indexed keywords

BASALT; CRUST-MANTLE BOUNDARY; CRYSTALLIZATION; ICE SHEET; MAGMA; MAGMA CHAMBER; MANTLE PLUME; MELT; MOHO; RIFT ZONE; SEAFLOOR SPREADING; UPWELLING; VOLCANIC GLASS;

ATLANTIC OCEAN; EURASIA; EUROPE; ICELAND; MID-ATLANTIC RIDGE; NORTHERN EUROPE; SCANDINAVIA; VATNAJOKULL;

EID: 40349084115     PISSN: 00223530     EISSN: 14602415     Source Type: Journal    
DOI: 10.1093/petrology/egm089     Document Type: Article

References (143)

1. Alfaro, R., Brandsdóttir, B., Rowlands, D. P., White, R. & Gudmundsson, M. T. (2007). Structure of the Grímrsvötn central volcano under the Vatnajökull icecap, Iceland. Geophysical Journal International 168, 863-876.
2. Allen, R. M., Nolet, G., Morgan, W. J., Vogfjord, K., Nettles, M., Ekstrom, G., Bergsson, B. H., Erlendsson, P., Foulger, G. R., Jokobsdottir, S., Julian, B. R., Pritchard, M., Ragnarsson, S. & Stefansson, R. (2002). Plume-driven plumbing and crustal formation in Iceland. Journal of Geophysical Research - Solid Earth 107, No. B8, 2163, doi:10.1029/2001JB000584.
3. Arnadottir, T., Delaney, P. T. & Sigmundsson, F. (1998). Sources of crustal deformation associated with the Krafla, Iceland, eruption of September 1984. Geophysical Research Letters 25, 1043-1046.
4. Baker, D. R. & Eggler, D. H. (1987). Compositions of anhydrous and hydrous melts coexisting with plagioclase, augite, and olivine or low-Ca pyroxene from 1 atm to 8 kbar; application to the Aleutian volcanic center of Atka. American Mineralogist 72, 12-28.
5. Bender, J. F., Bence, A. E. & Hodges, F. N. (1978). Petrogenesis of basalts from the Project FAMOUS area; experimental study from 0 to 15 kbars. Earth and Planetary Science Letters 41, 277-302.
6. Bjarnason, I. T., Caress, D., Flovenz, O. G. & Menke, W. (1993). Tomographic image of the Mid-Atlantic plate boundary in south-western Iceland. Journal of Geophysical Research, B, Solid Earth and Planets 98, 6607-6622.
7. Björnsson, A. (1985). Dynamics of crustal rifting in NE Iceland. Journal of Geophysical Research 90, 10151-10162.
8. Bjornsson, A., Johnsen, G., Sigurdsson, S., Thorbergsson, G. & Tryggvason, E. (1979). Rifting of the plate boundary in north Iceland 1975-1978. Journal of Geophysical Research 84, 3029-3038.
9. Bown, J. W. & White, R. S. (1994). Variation with spreading rate of oceanic crustal thickness and geochemistry. Earth and Planetary Science Letters. Amsterdam: Elsevier 121, 435-449.
10. Brandsclottir, B., Einarsson, P., Menke, W., Staples, R. K. & White, R. S. (1997). Faroe Iceland Ridge experiment; 2, Crustal structure of the Krafla central volcano. Journal of Geophysical Research, B, Solid Earth and Planets 102, 7867-7886.
11. Breddam, K. (2002). Kistufell; primitive melt from the Iceland mantle plume. Journal of Petrology 43, 345-373.
12. Breddam, K., Kurz, M. D. & Storey, M. (2000). Mapping out the conduit of the Iceland mantle plume with helium isotopes. Earth and Planetary Science Letters. Amsterdam: Elsevier, 176, pp. 45-55.
13. Condomines, M., Groenvold, K., Hooker, P. J., Muehlenbachs, K., O'Nions, R. K., Oskarsson, N. & Oxburgh, E. R. (1983). Helium, oxygen, strontium and neodymium isotopic relationships in Icelandic volcanics. Earth and Planetary Science Letters 66, 125-136.
14. Cribb, J. W. & Barton, M. (1996). Geochernical effects of clecoupled fractional crystallization and crustal assimilation. Lithos 37 293-307.
15. 2O on crystallisation of mid-ocean ridge and backarc basin magmas. Journal of Volcanology and Geothermal Research 110, 265-280.
16. 2O content of MORB and BABB glasses. Mineralogy and Petrology 57, 185-204.
17. Danyushevsky, L. V., McNeill, A. W. & Sobolev, A. V. (2002). Experimental and petrological studies of melt inclusions in phenocrysts from mantle-derived magmas; an overview of techniques, advantages and complications. Chemical Geology 183, 5-24.
18. Danyushevsky, L. V., Eggins, S. M., Falloon, T. J. & Perfit, M. R. (2003). Crustal origin for coupled 'ultra-depleted' and 'plagioclase' signatures in MORB olivine-hosted melt inclusions; evidence from the Siqueiros transform fault, East Pacific Rise. Contributions to Mineralogy and Petrology 144, 619-637.
19. Darbyshire, F. A., Bjarnason, I. T., Flovenz, O. G. & White, R. S. (1998). Crustal structure above the Iceland mantle plume imaged by the ICEMELT refraction profile. Geophysical Journal International 135, 1131-1149.
20. Darbyshire, F. A., Gudmundsson, G. B., Jakobsdottir, S. S., Priestley, K. F., Stefansson, R. & White, R. S. (2000a). Central structure of central and northern Iceland from analysis of teleseismic receiver functions. Geophysical Journal International 143, 163-184.
21. Darbyshire, F. A., Priestley, K. F. & White, R. S. (2000b). Structure of the crust and uppermost mantle of Iceland from a combined seismic and gravity study. Earth and Planetary Science Letters 181, 409-428.
22. de Zeeuw-van Dalfsen, E., Pagli, C., Pedersen, R. & Sigmundsson, F. (2004). Satellite radar interferometry 1993-1999 suggests deep accumulation of magma near the crust mantle boundary at the Krafla volcanic system, Iceland. Geophysical Research Letters 31, 5.
23. de Zeeuw-van Dalfsen, E., Rymer, H., Sigmundsson, F. & Sturkell, E. (2005). Net gravity decrease at Askja Volcano, Iceland; constraints on processes responsible for continuous caldera deflation, 1988-2003. Journal of Volcanology and Geotherenal Research 139, 227-239.
24. de Zeeuw-van Dalfsen, E., Rymer, H., Williams-Jones, G., Sturkell, E. & Sigmundsson, F. (2006). Integration of micro-gravity and geodetic data to constrain shallow system mass changes at Krafla Volcano, N. Iceland. Bulletin of Volcanology 68, 420-431.
25. Dungan, M. A. & Rhodes, J. M. (1978). Residual glasses and melt inclusions in basalts from DSDP Legs 45 and 46; evidence for magma mixing. Contributions to Mineralogy and Petrology 67, 417-431.
26. Einarsson, P. (1978). S-wave shadows in the Krafla Caldera in NE Iceland, evidence for a magma chamber in the crust. Bulletin Volcanologique 41, 187-195.
27. Einarsson, P. & Björnsson, S. (1980). Earthquakes in Iceland. Jökull 29, 37-43.
28. Elthon, D., Meen, J. K. & Ross, D. K. (1995). Composition variations of basaltic glasses from the Mid-Cayman Rise spreading center. Journal of Geophysical Research, B, Solid Earth and Planets 100, 12497-12512.
29. Ewart, J. A., Bjornsson, A. & Voight, B. (1991). Elastic deformation models of Krafla Volcano, Iceland, for the decade 1975 through 1985. Bulletin of Volcanology 53, 436-459.
30. Eysteinsson, H. & Hermance, J. F. (1985). Magnetotelluric measurements across the Eastern Neovolcanic Zone in South Iceland. Journal of Geophysical Research, B 90, 10093-10103.
31. Fagents, S. A., McGarvie, D. W. & Greely, R. (2001). Dynamics of the Ljotipollur phreatomagmatic eruption, S. central Iceland. EOS Transactions, American Geophysical Union, 82 (Fall Meeting Supplement, Abstract) V52A-1044.
32. Falloon, T. J., Danyushevsky, L. V. & Green, D. H. (2001). Peridotite melting at 1 GPa; reversal experiments on partial melt compositions produced by peridotite-basalt sandwich experiments. Journal of Petrology 42, 2363-2390.
33. Fedorova, T., Jacoby, W. R. & Wallner, H. (2005). Crust-mantle transition and Moho model for Iceland and surroundings from seismic, topography, and gravity data. Tectonophysics 396, 119-140.
34. Feigl, K. L., Gasperi, J., Rigo, A. & Sigmundsson, F. (2000). Crustal deformation near Hengill Volcano, Iceland 1993-1998; coupling between magmatic activity and faulting inferred from elastic modeling of satellite radar interferograms. Journal of Geophysical Research, B, Solid Earth and Planets 105, 25655-25670.
35. Fisk, M. R., Bence, A. E. & Schilling, J. G. (1982). Major element chemistry of Galapagos rift zone magmas and their phenocrysts. Earth and Planetary Science Letters 61, 171-189.
36. 2+, Ca and Mn. Journal of Petrology 24, 256-265.
37. Foulger, G. R. & Anderson, D. L. (2005). A cool model for the Iceland hotspot. Journal of Volcanology and Geotherenal Research 141 1-22.
38. Foulger, G. R., Du, Z. & Julian, B. R. (2003). Icelandic-type crust. Geophysical Journal International 155, 567-590.
39. Frost, B. R. & Lindsley, D. H. (1992). Equilibria amount Fe-Ti oxides, pyroxenes, olivine, and quartz: Part II. Application. American Mineralogist 77, 1004-1020.
40. Furman, T., Frey, F. A. & Park, K. (1991). Chemical constraints on the petrogenesis of mildly alkaline lavas from Vestmannaeyjar, Iceland; the Eldfell (1973) and Surtsey (1963-1967) eruptions. Contributions to Mineralogy and Petrology 109, 19-37.
41. Gebrande, H., Einarsson, P. & Miller, H. (1980). Seismic structure of Iceland along RRISP-Profile I. Zeitschrift für Geophysik 47 239-249.
42. Grove, T. L. & Bryan, W. B. (1983). Fractionation of pyroxene-phyric MORB at low pressure; an experimental study. Contributions to Mineralogy and Petrology 84, 293-309.
43. Grove, T. L., Kinzler, R. J. & Bryan, W. B. (1993). Fractionation of Mid-Ocean Ridge Basalt (MORB). In: Phipps-Morgan, J. et al. (eds) Mantle Flow and Melt Migration at Mid-Ocean Ridges, American Geophysical Monograph 71, 281-311.
44. Grove, T. L., Gerlach, D. C., Sando, T. W. & Baker, M. B. (1993). Origin of calc-alkaline series lavas at medicine lake volcano by fractionation, assimilation and mixing - corrections and clarifications (vol 82, pg 407, 1983). Contributions to Mineralogy and Petrology 114, 422-424.
45. Gudmundsson, A . (1988). Effect of tensile stress concentration around magma chambers on intrusion and extrusion frequencies. Journal of Volcanology and Geothermal Research 35, 179-194.
46. Gudmundsson, A. (2000). Dynamics of volcanic systems in Iceland: Example of tectonism and volcanism at juxtaposed hot spot and mid-ocean ridge systems. Annual Review of Earth and Planetary Sciences 28, 107-140.
47. Gudmundsson, O. (2003). The dense root of the Iceland crust. Earth and Planetary Science Letters 206, 427-440.
48. Gudmundsson, M. T. & Milsom, J. (1997). Gravity and magnetic studies of the subglacial Grimsvötn Volcano, Iceland; implications for crustal and thermal structure. Journal of Geophysical Research, B, Solid Earth and Planets 102, 7691-7704.
49. Gudmundsson, O., Brandsdottir, B., Menke, W. & Sigvaldason, G. E. (1994). The crustal magma chamber of the Katla volcano in South Iceland revealed by 2-D seismic undershooting. Geophysical Journal International 119, 277-296.
50. Gunnarsson, B., Marsh, B. D. & Taylor, H. P., Jr (1998). Generation of Icelandic rhyolites; silicic lavas from the Torfajökull central volcano. Journal of Volcanology and Geothermal Research 83, 1-45.
51. Gurenko, A. A. & Sobolev, A. V. (2006). Crust-primitive magma interaction beneath neovolcanic rift zone of Iceland recorded in gabbro xenoliths from Midfell, SW Iceland. Contributions to Mineralogy and Petrology 151, 495-520.
52. Hansen, H. & Grönvold, K. (2000). Plagioclase ultraphyric basalts in Iceland; the mush of the rift. Journal of Volcanology and Geothermal Research 98, 1-32.
53. Hansteen, T. H. (1991). Multi-stage evolution of the picritic Maelifell rocks, SW Iceland; constraints from mineralogy and inclusions of glass and fluid in olivine. Contributions to Mineralogy and Petrology 109, 225-239.
54. Hardarson, B. S., Ellam, R. M., Fitton, J. G. & Pringle, M. S. (1997 . Rift relocation; a geochemical and geochronological investigation of a paleo-rift in Northwest Iceland. Earth and Planetary Science Letters 153, 181-196.
55. Hards, V. L., Greenwood, P. B., Kempton, P. D. & Thompson, R. N. (2000). The magmatic evolution of the Snaefell volcanic centre; an example of volcanism during incipient rifting in Iceland. Journal of Volcanology and Geothermal Research 99, 97-121.
56. Hemond, C., Allègre, C. J., Condomines, M., Fourcade, S., Javoy, M. & Oskarsson, N. (1988). Thorium, strontium and oxygen isotopic geochemistry in Recent tholeiites from Iceland; crustal influence on mantle-derived magmas. Earth and Planetary Science Letters 87 273-285.
57. Hemond, C., Arndt, N. T., Hofmann, A. W., Lichtenstein, U., Oskarsson, N. & Steinthorsson, S. (1993). The heterogeneous Iceland plume; Nd-Sr-O isotopes and trace element constraints. Journal of Geophysical Research, B, Solid Earth and Planets 98, 15833-15850.
58. Herzberg, C. (2004). Partial crystallization of mid-ocean ridge basalts in the crust and mantle. Journal of Petrology 45, 2389-2405.
59. Hoskuldsson, A., Sparks, R. S. J. & Carroll, M. R. (2006). Constraints on the dynamics of subglacial basalt eruptions from geological and geochemical observations at Kverkfjoll, NE Iceland. Bulletin of Volcanology 68, 689-701.
60. Jamtveit, B., Brooker, R., Brooks, K., Larson, L. M. & Pederson, T. (2001). The water content of olivines from the North Atlantic Volcanic Province. Earth and Planetary Science Letters 186, 401-415.
61. Jónasson, K., Holm, P. M. & Pedersen, A. K. (1992). Petrogenesis of silicic rocks from the Króksfjördur central volcano, NW Iceland. Journal of Petrology 33, 1345-1369.
62. Jónsson, S., Bjornsson, G., Pedersen, R. & Segall, P. (2003) Post-earthquake ground movements correlated to pore-pressure transients. Nature 424, 179-183.
63. Juster, T. C., Grove, T. L. & Perfit, M. R. (1989). Experimental constraints on the generation of FeTi basalts, andesites, and rhyodacites at the Galapagos spreading center, 85°W and 95°W. Journal of Geophysical Research, B, Solid Earth and Planets 94, 9251-9274.
64. Kaban, M. K., Flovenz, O. G. & Palmason, G. (2002). Nature of the crust-mantle transition zone and the thermal state of the upper mantle beneath Iceland from gravity modelling. Geophysical Journal International 149, 281-299.
65. Kaban, M. K., Artemieva, I. M., Mooney, W. D. & Schwintzer, P. (2003 . Density of the continental roots; compositional and thermal contributions. Earth and Planetary Science Letters 209, 53-69.
66. Kelley, D. F. & Barton, M. (2005). Thickness, composition, and physical properties of crust in Iceland's neovolcanic zone. EOS Transactions, American Geophysical Union 86(52), Fall Meeting Supplement, V13E-0591.
67. Kelley, D. F., Kapostasy, D. D. & Barton, M. (2004). Depths of magma chambers in the Icelandic crust. EOS Transactions, American Geophysical Union 85(17), Joint Assembly Supplement, V54A-02.
68. Kelley, D. F., Leftwich, T. E. & Barton, M. (2005). Petrologic constraints on Iceland's lower crust. EOS Transactions, American Geophysical Union 86(18), Joint Assembly Supplement, V13A-02.
69. Kinzler, R. J. & Grove, T. L. (1992). Primary magmas of mid-ocean ridge basalts; 1, Experiments and methods. Journal of Geophysical Research, B, Solid Earth and Planets 97, 6885-6906.
70. Kjartansson, E. & Grönvold, K. (1983). Location of a magma reservoir beneath Hekla Volcano, Iceland. Nature 301, 139-141.
71. Kushiro, I. (1969). The system forsterite-diopside-silica with and without water at high pressures. American Journal of Science 267-A, 269-294.
72. Kvassnes, H. J., Dick, J. B. & Grove, T. L. (2003). The Atlantis Bank gabbro-suite was not a 'normal' magma-chamber that produced basalts. Geophysical Research Absracts 5, 12203.
73. LaFemina, P. C., Arnadottir, T., Dixon, T. H., Einarsson, P., Malservisi, R., Sigmundsson, F. & Sturkell, E. (2005). Geodetic GPS measurements in south Iceland; strain accumulation and partitioning in a propagating ridge system. Journal of Geophysical Research 110 21.
74. Langmuir, C. H. (1989). Geochemical consequences of in situ crystallization. Nature 340, 199-205.
75. Langmuir, C. H., Klein, E. M. & Plank, T (1992). Petrological systematics of Mid-Ocean Ridge Basalts: Constraints on melt generation beneath ocean ridges. In: Phipps-Morgan, J. et al. (eds) Mantle Flow and Melt Migration at Mid-Ocean Ridges, American Geophysical Monograph 71, 183-280.
76. Le Bas, M. J., Le Maitre, R. W., Streckeisen, A. & Zanettin, B. (1986). A chemical classification of volcanic rocks based on the total alkasilica diagram. Journal of Petrology 27, 745-750.
77. Le Roux, P. J., Le Roex, A. P. & Schilling, J. G. (2002). Crystallization processes beneath the southern Mid-Atalantic Ridge (40-50°S), evidence for high-pressure initiation of crystallization. Contributions to Mineralogy and Petrology 142, 582-602.
78. Leftwich, T. E., von Frese, R. R. B., Potts, L. V., Kim, G. R., Roman, D. R., Taylor, P. T. & Barton, M. (2005). Crustal modeling of the North Atlantic from spectrally correlated free-air gravity and terrain gravity. Journal of Geodynamics 40, 23-50.
79. Linde, A. T., Agustsson, K., Sacks, I. S. & Stefansson, R. (1993). Mechanism of the 1991 eruption of Hekla from continuous borehole strain monitoring. Nature 365, 737-740.
80. Macdonald, G. A. (1968). Composition and origin of Hawaiian lavas. In: Coats, R. R., Hay, R. L. & Anderson, C. A. (eds) Studies in Volcanology: A Memoir in Honor of Howel Williams, Geological Sociey of America. Memoir 116, 477-522.
81. Maclennan, J., Gronvold, K. & McKenzie, D. (2001). Plume-driven upwelling under central Iceland. Earth and Planetary Science Letters 194, 67-82.
82. Maclennan J., Eiler, J. M., Gronvold, K., Kitchen, N., McKenzie, D. & Shimizu, N. (2003). Melt mixing and crystallization under Theistareykir, northeast Iceland. Geochemistry, Geophysics, Geosystems 4, doi:10.1029/2003GC000558.
83. Maclennan, J., Hulme, T. & Singh, S. C. (2004). Thermal models of oceanic crustal accretion: Linking geophysical, geological and petrological observations. Geochemistry, Geophysics, Geosystems 5, doi: 10.1029/2003GC000605.
84. Marti, J. & Folch, A. (2005). Anticipating volcanic eruptions. In: Ernst, G. G. J. (ed.) Volcanoes and the Environment. Cambridge: Cambridge University Press, pp. 90-120.
85. McCann, V. & Barton, M. (2004).Oxygen fugacities of lavas from Iceland and implications for mantle redox states. EOS Transactions, American Geophysical Union 85(17), Joint Assembly Supplement, U53A-06.
86. McGarvie, D. W. (1984). Torfajoekull; a volcano dominated by magma mixing. Geology 12, 685-688.
87. Menke, W, Brandsdottir, B., Sparks, D. & West, M. (1998). Compressional and shear velocity structure of the lithosphere in Northern Ireland. Bulletin of the Seismological Sociey of America 88, 1561-1571.
88. Menke, W. & Sparks, D. (1995). Crustal accretion model for Iceland predicts 'cold crust. Geophysical Research Letters 22, 1673-1676.
89. Meyer, P. S., Schilling, J. & Sigurdsson, H. (1985). Petrological and geochemical variations along Iceland's neovolcanic zones. Journal of Geophysical Research, B 90, 10043-10072.
90. Michael, P. J. & Cornell, W. C. (1998). Influence of spreading rate and magma supply on crystallization and assimilation beneath mid-ocean ridges; evidence from chlorine and major element chemistry of mid-ocean ridge basalts. Journal of Geophysical Research, B, Solid Earth and Planets 103, 18325-18356.
91. Moore, J. G. & Calk, L. C. (1991). Degassing and differentiation in subglacial volcanoes, Iceland. Journal of Volcanology and Geothermal Research 46, 157-180.
92. Mørk, M. B. E. (1984). Magma mixing in the post-glacial Veidivoetn fissure eruption, Southeast Iceland; a microprobe study of mineral and glass variations. Lithos 17, 55-75.
93. Nicholls, I. A. & Ringwood, A. E. (1973). Effect of water on olivine stability in tholeiites and the production of silica saturated magmas in the island arc environment. Journal of Geology 81 285-300.
94. Nichols, A. R. L., Carroll, M. R. & Hoskuldsson, A. (2002). Is the Iceland hot spot also wet? Evidence from the water contents of undegassed submarine and subglacial pillow basalts. Earth and Planetary Science Letters 202, 77-87.
95. O'Hara, M. J. (1968). Are ocean floor basalts primary magma? Nature 220, 683-686.
96. Oskarsson, N., Sigvaldason, G. E. & Steinthorsson, S. (1985). Iceland geochemical anomaly; origin, volcanotectonics, chemical fractionation, and isotope evolution of the crust. Journal of Geophysical Research, B 90, 10011-10025.
97. Pagli, C., Arnadottir, T., Einarsson, P., Sigmundsson, F. & Sturkell, E. (2006). Deflation of the Askja volcanic system; constraints on the deformation source from combined inversion of satellite radar interferograms and GPS measurements. Journal of Volcanology and Geotherenal Research 152, 97-108.
98. Pan, Y & Batiza, R. (2002). Mid-ocean ridge magma chamber processes; constraints from olivine zonation in lavas from the East Pacific Rise at 9°30'N and 10°30'N. Journal of Geophysical Research, B, Solid Earth and Planets 107, 13.
99. Pan, Y. & Batiza, R. (2003). Magmatic processes under mid-ocean ridges; a detailed mineralogic study of lavas from East Pacific Rise 9°30'N, 10°30'N, and 11°20'N. Geochemistry, Geophysics, Geosystems 4 doi:10.1029/2002GC000309.
100. Pedersen, R. & Sigmundsson, F. (2004). InSAR based sill model links spatially offset area of deformation and seismicity for the 1994 unrest episode at Ejyafjallajökull Volcano, Iceland. Geophysical Research Letters 31, 5.
101. Pedersen, R. & Sigmunclsson, F. (2006). Temporal developement of the 1999 intrusive episode in the Eyjafjallajökull volcano, Iceland, derived from InSAR images. Bulletin of Volcanology 68, 377-393.
102. Révillon, S., Arndt, N. T., Hallot, E., Kerr, A. C. & Tarney, J. (1999). Petrogenesis of picrites from the Caribbean Plateau and the North Atlantic magmatic province. Lithos 49, 1-21.
103. Rymer, H. & Tryggvason, E. (1993). Gravity and elevation changes at Askja, Iceland. Bulletin of Volcanology 55, 361-371.
104. Rymer, H., Cassidy, J., Locke, C. A. & Sigmundsson, F. (1998). Post-eruptive gravity changes from 1990 to 1996 at Krafla Volcano, Iceland. Journal of Volcanology and Geothermal Research 87, 141-149.
105. Sack, R. O., Carmichael, I. S. E. & Walker, D. (1987). Experimental petrology of alkalic lavas; constraints on cotectics of multiple saturation in natural basic liquids. Contributions to Mineralogy and Petrology 96, 1-23.
106. Schiellerup, H. (1995). Generation and equilibration of olivine tholeiites in the northern rift zone of Iceland; a petrogenetic study of the Bláfjall table mountain. Journal of Volcanology and Geothermal Research 65, 161-179.
107. Schilling, J. G. (1973). Iceland mantle plume. Nature 246, 141-143.
108. 2 at 1100°C, with implications for the differentiation of basaltic magmas. Journal of Petrology 34, 743-762.
109. Sigmundsson, F., Bilham, R. & Einarsson, P. (1992). Magma chamber deflation recorded by the Global Positioning System; the Hekla 1991 eruption. Geophysical Research Letters 19, 1483-1486.
110. Sigmundsson, F., Einarsson, P., Foulger, G. R., Hodgkinson, K. M., Rognvaldsson, S. T. & Thorbergsson, G. (1997). The 1994-1995 seismicity and deformation at the Hengill triple junction, Iceland; triggering of earthquakes by minor magma injection in a zone of horizontal shear stress. Journal of Geophysical Research, B, Solid Earth and Planets 102, 15151-15161.
111. Sigurdsson, H. & Sparks, R. S. J. (1978). Rifting episode in North Iceland in 1874-1875 and the eruptions of Askja and Sveinagja. Bulletin Volcanologique 41, 149-167.
112. Sigurdsson, H. & Sparks, R. S. J. (1981). Petrology of rhyolitic and mixed magma ejecta from the 1875 eruption of Askja, Iceland. Journal of Petrology 22, 41-84.
113. Singh, S. C., Harding, A. J., Kent, G. M., Sinha, M. C., Combier, V., Bazin, S., Tong, C. H., Pye, J. W., Barton, P. J., Hobbs, R. W., White, R. S. & Orcutt, J. A. (2006). Seismic reflection images of the Moho underlying melt sills at the East Pacific Rise. Nature 442, 287-290.
114. Sinton, J. M. & Detrick, R. S. (1992). Mid-ocean ridge magma chambers. Journal of Geophysical Research, B, Solid Earth and Planets 97 197-216.
115. Simon, J., Gronvold, K. & Saemundsson, K. (2005). Postglacial eruptive history of the Western volcanic zone, Iceland. Geochemistry, Geophysics, Geosystems 6, doi:10.1029/2005GC001021.
116. 2O contents of low-MgO high-alumina basalts. Contributions to Mineralogy and Petrology 113, 167-184.
117. Slater, L., Gronvold, K., McKenzie, D. & Shimizu, N. (2001). Melt generation and movement beneath Theistareykir, NE Iceland. Journal of Petrology 42, 321-354.
118. Soosalu, H. & Einarsson, P. (1997). Seismicity around the Hekla and Torfajökull volcanoes, Iceland, during a volcanically quiet period, 1991-1995. Bulletin of Volcanology 59, 36-48.
119. Soosalu, H. & Einarsson, P. (2004). Seismic constraints on magma chambers at Hekla and Torfajökull volcanoes, Iceland. Bulletin of Volcanology 66, 276-286.
120. Soosalu, H., Jonsdottir, K. & Einarsson, P. (2006a). Seismicity crisis at the Katla volcano, Iceland - signs of a cryptodome? Journal of Volcanology and Geothermal Research 153, 177-186.
121. Soosalu, H., Lippitsch, R. & Einarsson, P. (2006b). Low-frequency earthquakes at the Torfajökull volcano, south Iceland. Journal of Volcanology and Geothermal Research 153, 187-199.
122. Spulber, S. D. & Rutherford, M. J. (1983). The origin of rhyolite and plagiogranite in oceanic crust; an experimental study. Journal of Petrology 24, 1-25.
123. Staples, R. K., Brandsdottir, B., Maguire, P. K. H., McBride, J. H., Menke, W. & White, R. S. (1997). Faroe-Iceland Ridge experiment; 1, Crustal structure of northeastern Iceland. Journal of Geophysical Research, B, Solid Earth and Planets 102, 7849-7866.
124. Steinthorsson, S., Oskarsson, N. & Sigvaldason, G. E. (1985). Origin of alkali basalts in Iceland; a plate tectonic model. Journal of Geophysical Research, B 90, 10027-10042.
125. Sturkell, E. & Sigmundsson, F. (2000). Continuous deflation of the Askja Caldera, Iceland, during the 1983-1998 noneruptive period. Journal of Geophysical Research, B, Solid Earth and Planets 105, 25671-25684.
126. Sturkell, E., Einarsson, P. & Sigmundsson, F. (2003). Recent unrest and magma movements at Eyjafiallajökull and Katla Volcanoes, Iceland. Journal of Geophysical Research, B, Solid Earth and Planets 108 13.
127. Sturkell, E., Einarsson, P., Freysteinn, S., Holldor, G., Olafsson, O., Pedersen, R., de Zeeuw-van Dalfsen, E., Linde, A. T., Sacks, I. S. & Stefansson, R. (2006). Volcano geodesy and magma dynamics in Iceland. Journal of Volcanology and Geotherenal Research 150, 14-34.
128. Sugawara, T. (2000). Empirical relationships between temperature, pressure, and MgO content in olivine and pyroxene saturated liquid. Journal of Geophysical Research, B, Solid Earth and Planets 105 8457-8472.
129. Thy, P. (1991). High and low pressure phase equilibria of a mildly alkalic lava from the 1965 Surtsey eruption; experimental results. Lithos 26, 223-243.
130. Thy, P. & Lofgren, G. E. (1994). Experimental constraints on the low-pressure evolution of transitional and mildly alkalic basalts; the effect of Fe-Ti oxide minerals and the origin of basaltic andesites. Contributions to Mineralogy and Petrology 116, 340-351.
131. Tormey, D. R., Bryan, W. B. & Grove, T. L. (1987). Experimental petrology of normal MORB near the Kane fracture zone; 22°-25°N, Mid-Atlantic Ridge. Contributions to Mineralogy and Petrology 96, 121-139.
132. Trønnes, R. (1990). Basaltic melt evolution of the Hengill Volcanic System, SW Iceland, and evidence for clinopyroxene assimilation in primitive tholeiitic magmas. Journal of Geophysical Research 95 15893-15910.
133. Tryggvason, E. (1980). Observed ground deformation during the Krafla eruption of March 16, 1980. Nordic Volcanological Institute, University of Iceland, Series: Nordic Volcanological Institute 0258 7718, 80-05.
134. Tryggvason, E. (1986). Multiple magma reservoirs in a rift zone volcano; ground deformation and magma transport during the September 1984 eruption of Krafla, Iceland. Journal of Volcanology and Geotherenal Research 28, 1-44.
135. Tryggvason, E. (1989). Ground deformation in Askja, Iceland; its source and possible relation to flow of the mantle plume. Journal of Volcanology and Geotherenal Research 39, 61-71.
136. Tryggvason, E. (1994a). Surface deformation at the Krafla Volcano, North Iceland, 1982-1992. Bulletin of Volcanology 56, 98-107.
137. Tryggvason, E. (1994b). Observed ground deformation at Hekla, Iceland prior to and during the eruptions of 1970, 1980-1981 and 1991. Journal of Volcanology and Geotherenal Research 61, 281-291.
138. Walker, D., DeLong, S. E. & Shibata, T. (1979). Abyssal tholefites from the Oceanographer fracture zone; II, Phase equilibria and mixing. Contributions to Mineralogy and Petrology 70, 111-125.
139. Weaver, J. S. & Langmuir, C. H. (1990). Calculation of phase equilibrium in mineral-melt systems. Computers & Geosciences 16, 1-19.
140. Weir, N. R. W., Brandsdottir, B., Darbyshire, F., Einarsson, P., Gunnarsson, G., Hjorleifsdottir, V., Jonsdottir, K., Mochizuki, M., Nakanishi, A., Shimamura, H., Shiobara, H., Smallwood, J., Staples, R. & White, R. S. (2001). Crustal structure of the northern Reykjanes Ridge and Reykjanes Peninsula, Southwest Iceland. Journal of Geophysical Research, B, Solid Earth and Planets 106, 6347-6368.
141. White, R. S. & McKenzie, D. (1995). Mantle plumes and flood basalts. Journal of Geophysical Research, B, Solid Earth and Planets 100 17543-17585.
142. White, R. S., McKenzie, D. & O'Nions, R. K. (1992). Oceanic crustal thickness from seismic measurements and rare earth element inversions. Journal of Geophysical Research, B, Solid Earth and Planets 97 19683-19715.
143. Yang, H. J., Grove, T. L. & Kinzler, R. J. (1996). Experiments and models of anhydrous, basaltic olivine-plagioclase-augite saturated melts from 0.001 to 10 kbar. Contributions to Mineralogy and Petrology 124, 1-18.