Articles

Submitted:

de Zeeuw-van Dalfsen, H. Rymer, G. Williams-Jones, E. Sturkell, and F. Sigmundsson, The integration of micro-gravity and geodetic data at Krafla volcano, N-Iceland, submitted to Bull. Volc., 2004.

Eliasson, J., G. Larsen, M. T. Gudmundsson, and F. Sigmundsson, Probabilistic model for eruptions and associated flood events in the Katla caldera, Iceland, submitted to Computational Geosciences, 2004.

Gudfinnson, G. H. and Oskarsson, N. Origin of the picrites of Reykjanes Peninsuls, southwest Iceland, and implications for mantle conditions during the last glaciation. Submitted to Journal of Geophysical research.

Jackson MJ, Oskarsson N, Trønnes RG, Grönvold K, Hart S, Oppo D, McManus JF, Sachs J, 2004: Holocene loess deposition in Iceland: Evidence against long-term AO/NAO-modulated climate change. Geology, submitted, Nov. 2003.
Johansen, T.S., Trønnes, R. G., Karlsson, H., Grönvold, K. Petrogenesis of the alkaline to transitional off-rift basalts at Snæfellsnes, Iceland. Submitted to Geochemistry, Geophysics, Geosystems, July 2002.

Larsson, D. and Oskarsson, N. Phase assemblages and trace element content of sulphides from the Krafla geothermal system, Iceland.
Mattsson, H.B. & Höskuldsson, A. Stratigraphy, formation of flow-lobe tumuli and eruption duration in the 5900 BP Helgafell lava field, south Iceland. Submitted to Journal of Volcanology and Geothermal Research.

Mattsson, H.B., Höskuldsson, A. & Hand, S. Crustal xenoliths in the 6220 BP Sæfell tuff-cone, south Iceland: evidence for a deep, diatreme-forming, Surtseyan eruption. Submitted to Journal of Volcanology and Geothermal Research.

Mattsson, H.B. & Oskarsson, N. Petrogenesis of alkali basalts in a propagating rift: evidence from the Heimaey volcanic centre, south Iceland. Submitted to Journal of Volcanology and Geothermal Research.

Nykänen, V. S., Grönvold, K. and Óskarsson, N. Petrogenesis of ferrobasalts of the Kverkfjöll Volcanic System, Eastern Rift-Zone, Iceland: Evidence for anomalous mantle plume component. Journal of Petrology.

Pagli C., Sigmundsson, F., Árnadóttir, T., Einarsson, P., Sturkell, E., Deflation of the Askja volcanic system: contraints on the deformation source from combined inversion of satellite radar interferograms and GPS measurements, submitted to Journal of Volcanology and Geothermal Research.
Pedersen, R., Sigmundsson, F., Temporal development of the 1999 intrusive episode in the Eyjafjallajökull volcano, Iceland, derived from InSAR images, submitted to Bull. Volc., 2004.
Solgevik, H., Mattsson, H.B., Hermelin, O. Growth of an emergent tuff cone: fragmentation and depositional processes recorded in the Capelas tuff-cone, São Miguel, Azores. Submitted to Journal of Volcanology and Geothermal Research.

Soosalu H, Einarsson P. Seismic characteristics of the Hekla volcano, Iceland. Submitted to Jökull
Soosalu, H, Einarsson P, Þorbjarnardóttir BS (2003). Seismic activity related to the 2000 Hekla eruption, Iceland. Bulletin of Volcanology, submitted.
Soosalu H, Jónsdóttir K, Einarsson P (2004). Seismicity crisis at the Katla volcano - signs of a cryptodome? Submitted to Earth and Planetary Science Letters.
Sturkell, E., P. Einarsson, F. Sigmundsson, H. Geirsson, H. Olafsson, R. Pedersen, E. de Zeeuw-van Dalfsen, A. L. Linde, I. S. Sacks, and R. Stefansson, Volcano geodesy and magma dynamics in Iceland, submitted to J. Volc. Geotherm. Res., 2004.
Sturkell, E., F. Sigmundsson, and R. Slunga, 1983-2003 decaying rate of deflation at Askja caldera: Pressure decrease in an extensive magma plumbing system at a spreading plate boundary, submitted to Bull. Volc., 2004.

In press:

Elske van Dalfsen, Hazel Rymer, Freysteinn Sigmundsson and Erik Sturkell, Net gravity decrease at Askja volcano, Iceland: Constraints on processes responsible for continuous caldera deflation, 1988-2003, J. Volc. Geotherm. Res., 2004, in press.

Lippitsch R., White R, Soosalu H (2004). Precise hypocenter relocation of microearthquakes in a high-temperature geothermal field: the Torfajökull central volcano, Iceland. Geophysical Journal International, in press.

Wilson, J. R., Josephsen, K. & Holm, D. H. ”Den lagdelte Fongen-Hyllingen intrusion, Norge” - The Geological Society of Denmark. In press.

2005:

Clifton, A. and Einarssonn, P., 2005, Styles of surface rupture accompanying the June 17 and 21, 2000 earthquakes in the South Iceland Seismic Zone. Tectonophysics 396, p.141-159. (263)

2004:

Árnadóttir,Th., H. Geirsson and P. Einarsson (2004), Coseismic stress changes and crustal deformation on the Reykjanes Peninsula due to triggered earthquakes on 17 June 2000, J. Geophys. Res., 109, B09307,
doi:10.1029/2004JB003130. (249)

Claesson, L., Skelton, A.D.L., Graham, C., Dietl, C., Mörth, C-M.,Torssander, P., Kockum, I., 2004. Hydrochemical changes before and after a major earthquake . GEOLOGY, August, 2004, v. 32, no.8 p. 641-644. (255)

de Zeeuw-van Dalfsen, E., R. Pedersen, F. Sigmundsson, and C. Pagli, 2004. Deep accumulation of magma near crust-mantle boundary at the Krafla volcanic system, Iceland: Evidence from satellite radar interferometry 1993-1999, Gephys. Res. Lett., 31, L13611, doi:10.1029/2004GL020059. (261)

Frost D.J., Poe B.T., Trønnes R.G., Liebske C., Duba A., Rubie D.C. 2004: A new large-volume 6-8 multianvil system (340 kb pdf). Phys. Earth Planet. Int. 143/144, 507-514. (258)

Frost D.J., Liebske C.,Langenhorst F., McCammon C.A., Trønnes R.G., Rubie D.C., 2004: Experimental evidence for the existence of Fe-rich metal in the Earth´s lower mantle (229 kb pdf). Nature 428, 409-412, with related News and Views article (Nature 428, 379). (259)

Gudmundsson, M.T., F. Sigmundsson, H. Bjornsson, and Th. Hognadottir, The 1996 eruption at Gjálp, Vatnajökull ice cap: Course of events, efficiency of heat transfer, ice deformation and subglacial water pressure, Bull. Volc., 66, 46-65, 2004. (262)

Soosalu H, Einarsson P (2004). Seismic constraints on magma chambers at Hekla and Torfajökull volcanoes, Iceland. Bulletin of Volcanology 66:276-286. (254)

Lacasse C, Karlsdóttir S, Larsen G, Soosalu H, Rose WI and Ernst GGJ., 2004. Weather radar observations of the Hekla 2000 eruption cloud, Iceland. Bulletin of Volcanology, 66:457-473. (253)

Pedersen, R., F. Sigmundsson, InSAR based sill model links spatially offset areas of deformation and seismicity for the 1994 unrest episode at Eyjafjallajökull volcano, Iceland, Gephys. Res. Lett., 31, L14610, doi:10.1029/2004GL020368, 2004. (260)

Walter M.J., Trønnes R.G., 2004: Early Earth differentiation (498 kb pdf). Earth Planet. Sci. Lett. 225, 253-269 (Frontiers article). (256)

Walter, M.J., Nakamura E., Trönnes R.G. , Frost DJ, 2004: Experimental constraints on crystallization differentiation in a deep magma ocean (715 kb pdf). Geochim. Cosmochim. Acta 68, 4267-4284. (257)

2003:

Árnadóttir, Th., S. Jónsson, R. Pedersen and G. Gudmundsson, Coulomb stress changes in the South Iceland Seismic Zone due to two large earthquakes in June 2000, Geophysical Research Letters, vol. 30, doi:10.1029/2002GL016495, no. 5, 2003. (244)

Clifton, Amy E., Schlische, Roy W., 2003. Fracture populations on the Reykjanes Peninsula, Iceland: Comparison with experimental clay models of oblique rifting. J. Geophys. Res. Vol. 108 No. B2. (240)

Clifton, A.E., C.Pagli, J.F. Jónsdóttir, K. Eythorsdóttir, K. Vogfjörð, 2003. Surface Effects of Triggered Fault Slip on Reykjanes Peninsula, SW Iceland. Tectonophysics 369, p.145-154. (246)

Gudmundsson, M.T., F. Sigmundsson, H. Bjornsson, and Th. Hognadottir, The 1996 eruption at Gjálp, Vatnajökull ice cap: Course of events, efficiency of heat transfer, ice deformation and subglacial water pressure, Bull. Volc., published online 12 July, 2003 . (251)

Jónsson, S., Segall, P., Pedersen, R., Björnsson, G. 2003. Post-earthquake ground movements correlated to pore-pressure transients, Nature, vol. 424, p.179-183. (245)

Maclennan, J., McKenzie, D., Hilton, F., Grönvold, K., Shimizu, N., 2003. Geochemical variabililty in a single flow from northern Iceland, Journal of Geophysical Research, Vol. 108, No. B1, 2007, doi:10.1029/2000JB000142. (239)

Mattsson, H. & Höskuldsson, Á., 2003. Geology of the Heimaey volcanic centre, south Iceland: early evolution of a central volcano in a propagating rift? Journal of Volcanology and Geothermal Research 127:55-71. (242)
Momme, P., Oskarsson, N. and Keays, R.R., 2003. Platinum-group elements in the Icelandic rift system: melting processes and mantle sources beneath Iceland. Chemical Geology, 196: 209-234. Highly Siderophile elements in the Earth and Meteorites: A volume in honor of John Morgan. Table 1 as spreadsheet (241)
Pagli, C., R. Pedersen, F. Sigmundsson, and K.L. Feigl, Triggered fault slip on June 17, 2000 on the Reykjanes Peninsula, SW-Iceland captured by radar interferometry, Geophys. Res. Letters., 30(6), 1273, doi:10.1029/2002GL015310, 2003. (248)
Pedersen, R., S. Jónsson, Th. Árnadóttir, F. Sigmundsson, and K.L. Feigl, 2003. Fault slip distribution of two June 2000 Mw6.4 earthquakes in South Iceland estimated from joint inversion of InSAR and GPS measurements, Earth and Planetary Science Letters, 213, p. 487-502. (243).

Stracke, A., Zindler, A., Salters, V.J.M., McKenzie, D., Blichert-Toft, J., Albarède, F., Grönvold, K. 2003. Theistareykir revisited, G³ An Electronic Journal of the Earth Sciences, vol. 4, nr. 2, 49 pp. (238)
Soosalu, H.,, Einarsson, P., Jakobsdóttir, S. (2003). Volcanic tremor related to the 1991 eruption of the Hekla volcano, Iceland. Bulletin of Volcanology, 65:562-577. (250)
Sturkell, E., Sigmundsson, F. and Einarsson, P., Recent unrest and magma movements at Eyjafjallajökull and Katla volcanoes, Iceland, J. Geophys. Res., 108 (B8), 2369, doi:10.1029/2001JB000917, 2003. (247)
Sturkell, E., and P. Einarsson, F. Sigmundsson, S. Hreinsdottir, and H. Geirsson, Deformation of Grímsvötn volcano, Iceland :1998 eruption and subsequent inflation, Geophys. Res. Letters, 30, 1182, doi: 10.129/2002GL016460, 2003. (252)

2002:

Andersen, J.C., Power, M. and Momme, P., 2002. Platinum-group elements in the North Atlantic Tertiary Igneous Province. In: L.J. Cabri (Editor), The Geology, Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements. Canadian Institute of Mining, Metallurgy and Petroleum, pp. 637-668. (237)
Andrews, John T; Geirsdottir, Aslaug; Hardardottir, Jorunn; Principato, Sarah; Gronvold, Karl; Kristjansdottir, Greta B; Helgadottir, Gudrun; Drexler, John; Sveinbjornsdottir, Arny. Distribution, sediment magnetism and geochemistry of the Saksunarvatn (10 180+ or -60 cal. yr BP) tephra in marine, lake, and terrestrial sediments, Northwest Iceland, JQS. Journal of Quaternary Science, vol.17, no.8, pp.731-745, Dec. 2002. (236)

Breddam, K. 2002. Primitive melt from the Iceland mantle plume. Journal of Petrology, 43, 345-373. (220)

Clifton, A. E., Sigmundsson, F., Feigl, K. L., Guðmundsson, G. and Árnadóttir, Th. 2002. Surface effects of faulting and deformation resulting from magma accumulation at the Hengill triple junction, SW Iceland, 1994 - 1998. Journal of Volcanology and Geothermal Research (JVGR), 115 : 233-255. (230)

Gudmundsson, S., Carstensen, J. M. and Sigmundsson, F. 2002. Unwrapping ground displacement signals in satellite radar interferograms with aid of GPS data and MRF regularisation, IEEE Transactions on Geoscience and Remote Sensing, p.1743 -1754. (217)

Gudmundsson, S., Gudmundsson, M. T., Bjornsson, H. and Sigmundsson, F. Three-dimensional glacier surface motion maps at the Gjálp eruption site, Iceland, inferred from combining InSAR and other ice displacement data., Annals of Glaciology, 34, 315-322, 2002. (235)

Gudmundsson, S., Sigmundsson, F. and Carstensen, J. M. Three-dimensional surface motion maps estimated from combined InSAR and GPS data, J. Geophys. Res., 107, doi: 10.1029/2001JB000283, 2002. (234)

Jennings, Anne E; Gronvold, Karl; Hilberman, Rachael; Smith, Mikie; Hald, Morten. High-resolution study of Icelandic tephras in the Kangerlussuaq
Trough, Southeast Greenland, during the last deglaciation, JQS. Journal of Quaternary Science, vol.17, no.8, pp.747-757, Dec. 2002. (233)

Larsson, D; Gronvold, K; Oskarsson, N; Gunnlaugsson, E. Hydrothermal alteration of plagioclase and growth of secondary feldspar in the Hengill volcanic centre, SW Iceland Journal of Volcanology and Geothermal Research, vol.114, no.3-4, pp.275-290, 30 May 2002. (226)

Maclennan, J., Jull, M., McKenzie, D., Slater, L., Grönvold, K., 2002. The link between volcanism and deglaciation in Iceland (540 KB pdf), G3, vol. 3 (11), 1062, doi:10.1029/2001GC000282. pp. 1-25. (232)

Momme, P., Tegner, C., Keays R. R., Brooks C. K. 2002. The behaviour of platinum-group elements in basalts from the East Greenland Rifted Margin (527 kb pdf file). Contrib Mineral Petrol, 143: 133-153. (225)

Momme, P. and Wilson J. R. 2002. The Kraemer Island macrodyke, East Greenland: solidification of a flood basalt conduit (860 kb pdf file). Geological Magazine, 139 (2): 171-190. (227)

Sinton, John; Bergmanis, Eric; Rubin, Ken; Batiza, Rodey; Gregg, Tracy K P; Gronvold, Karl; Macdonald, Ken C; White, Scott M. Volcanic eruptions on mid-ocean ridges; new evidence from the superfast spreading East Pacific Rise, 17 degrees -19 degrees S, Journal of Geophysical Research, B, Solid Earth and Planets, vol.107, no.6, 20 pp., 10 Jun 2002. (231)

Sigvaldason, G. E. 2002. Volcanic and tectonic processes coinciding with glaciataion and crustal rebound: an early Holocene rhyolitic eruption in the Dyngjufjöll volcanic centre and the formation of the Askja caldera, north Iceland. Bull Volcanol, 64:192-205. (224)

Soosalu H. and Einarsson, P. 2002. Earthquake activity related to the 1991 eruption of the Hekla volcano, Iceland. Bulletin of Volcanology, 63:536-544. (222)

Trønnes, R.G. 2002. Stability range and decomposition of potassic richterite and phlogopite end members at 5-15 GPa (280 kb pdf). Mineralogy and Petrology, 74:129-148. (A.D. Edgar Memorial Issue). (223)

Trønnes, R.G. and D.J. Frost, 2021. Peridotite melting and mineral-melt partitioning of major and minor elements at 22-24.5 GPa (1.101 kb pfd). Earth and Planetary Science Letters, 197, 117-131. (221)

2001:

Árnadóttir,Th., Hreinsdóttir,S., Gudmunsson, G., Einarsson, P., Heinert, M. & Völksen, C. 2001. Crustal deformation measured by GPS in the South Iceland Seismic Zone due to two large earthquakes in June 2000, Geophysical Research Letters, vol. 28, 21, 4031-4033. (219)

Clifton, A.E. and Schlische, R.W. 2001. Nucleation, growth and linkage of faults in oblique rift zones: Results from experimental clay models and implications for maximum fault size. Geology, 29: 455-458. (212)

Frogner, P., Gislason, S. R. and Oskarsson, N. 2001.Fertilizing potential of volcanic ash in ocean surface water, Geology, 29: 487-490. (213)

Hreinsdottir, S., Einarsson, P. and Sigmundsson, F. 2001. Crustal deformation at the oblique spreading Reykjanes Peninsula, SW-Iceland: GPS measurements from 1993 to 1998, J. Geophys. Res., 106, 13803-13816. (216)

Maclennan, J. McKenzie, D. and Grönvold, K. 2001. Plume-driven upwelling under central Iceland. Earth and Planetary Science Letters, 194:67-82. (229)

Maclennan, J. McKenzie, D., Grönvold, K. and Slater, L. 2001. Crustal accretion under northern Iceland. Earth and Planetary Science Letters, 191:295-310. (228)

Pedersen, R., Sigmundsson, F., Feigl K.L. and Árnadóttir, Th. 2001. Coseismic interferograms of two MS = 6.6 earthquakes in the South Iceland Seismic Zone, June 2000, Geophysical Research Letters, vol 28 (17), pp. 3341-3344. (215)

Prestvik, T., Goldberg, S., Karlsson, H. and Grönvold, K. 2001. Anomalous strontium and lead isotope signatures in the off-rift Öræfajökull central volcano in south-east Iceland ; Evidence for enriched endmember(s) of the Iceland mantle plume?. Earthy and Planetary Science Letters , 190, 211-220. (218)

Roeder, P., Poustovetov, L. A. and Oskarsson, N. 2001. Growth forms and composition of Chromian spinel in MORB magma: Diffusion-Controlled crystallization of Chromian Spinel, The Canadian Mineralogist, Vol.39: 397-416. (214)

Slater, L., McKenzie, D., Gronvold, K. and Shimizu, N. 2001. Melt generation and movement beneath Theistareykir N. E. Iceland, J. Petrology, 42, 321-354. (211)

2000:

Clifton, A. E., Schlische,R. W., Withjack, M. O. and Ackermann, R. V. 2000, Influence of rift obliquity on fault-population systematics: results of experimental clay models, Journal of Structural Geology, 22, 1491-1509. (197)

Eiler, J. M., Gronvold, K., Kitchen, N. 2000. Oxygen isotope evidence for the origin of chemical variations in lavas from Theistareykir Volcano in Iceland's northern volcanic zone. Earth and Planetary Science Letters, vol.184, no.1, pp.269-286. (210)

Feigl, K., Gasperi, J. Sigmundsson, F. and Rigo, A. 2000. Crustal deformation near Hengill volcano, Iceland 1993-1998: Coupling between magmatic activity and faulting inferred from elastic modelling of satellite radar interferograms, J. Geophys. Res., 25655-25670. (206)

Frogner P. 2000, Electrolyte effects on dissolution rate of tetraethoxysilane at pH 1 - 5, Journal of Non-Crystalline Solids, 265: 149-156. (209)

Gudfinnsson, G. H. and Presnall, D. C. 2000. Melting behavior of model lherzolite in the system CaO-MgO-Al2O3-SiO2-FeO at 0.7 to 2.8 GPa. Journal of Petrology, 41, 1241-1269. (200)

Gudmundsson, M. T., Larsen, G., Bjornsson, H., and Sigmundsson, F. 2000. Comment: Subglacial eruptions and synthetic aperture radar images, EOS, Transaction of the American Geophysical Union, 81, 134-135 and 140, 2000. (204)

Hansen, H. and Grönvold, K. 2000. Plagioclase ultraphyric basalts in Iceland: the mush of the rift., J. Volcanol. Geothermal. Res., 98, 1-32. (201)

Jennings, A. Syvitski, J., Gerson, L., Grönvold, K., Geirsdóttir, Á., Harðardóttir, J., Andrews J. and Hagen, S. 2000.Chronology and paleoenvironments during the late Weichselian deglaciation of the southwest Iceland shelf, BOREAS, 29, 167-183. (208)

Johnsson, D. J., Sigmundsson, F. and Delaney, P. T. 2000. Comment on "Volume of magma accumulation or withdrawal estimated from surface uplift or subsidence, with application to the 1960 collapse of Kilauea volcano" by P.T. Delaney and D.F. McTigue, Bull. Volc., 61, 491-493. (203)

Massonnet, D. and Sigmundsson, F. 2000. Remote sensing of volcano deformation by radar interferometry from various satellites, In: Remote sensing of volcanoes, Am. Geophys. Union Geophysical Monograph vol. 116, 207-221. (202)

Sigurdsson, I. A. , Steinthorsson. S. and Grönvold K. 2000. Calcium-rich melt inclusions in Cr-spinels from Borgarhraun, northern Iceland, EPSL, 183(1-2),15-26, 2000. (207)

Sturkell, E., Ormö, J., Nõlvak, J., and Wallin, Å. 2000: Distant ejecta from the Lockne marine-target impact crater, Sweden, Meteoritics & Planetary Science, 35, 929-936. (198)

Sturkell, E. and Sigmundsson, F. 2000. Continuous deflation of the Askja caldera Iceland, during the 1983-1998 non-eruptive period, J. Geophys. Res., 25671-25684. (205)

Trönnes, R. G. 2000. Melting relations and major element partitioning in an oxidized bulk Earth model composition at 15-26 GPa (2.537 kb pdf), Lithos, 53, 233-245, 2000. (199)

1999:

Alex, N., Einarsson, P., Heinert, M., Niemeier, W., Ritter, B., Sigmundsson F. and Willgalis, S. 1999. GPS-Meßkampagne 1995 zur Bestimmung von Deformationen der Erdkruste in Südwestisland, Zeitschrift für Vermessungswesen, 124, 12: 377-388. (190)

Cruz, J.V., Coutinho, R. Carvalho, M.R., Oskarsson, N. and Gíslason, S. R. 1999. Chemistry of waters from the Furnas volcano, São Miguel, Azores: Fluxes of volcanic carbon dioxide and leached material, J. Volcanol. Geotherm. Res., 92, 151-167. (184)

Ferreira, T. and Oskarsson, N. 1999. Chemistry and isotopic composition of fumarole discharge of the Furnas Caldera. J. Volcanol. Geotherm. Res., 92, 169-179. (185)

Hilton, D., R., Gronvold, K., Macpherson, C. G. and Castillo, P. R. 1999. Extreme 3He/ 4He ratios in Northwest Iceland; constraining the common component in mantle plumes. Earth and Planetary Science Letters, vol.173, no.1-2, pp.53-60. (222)

Jonsson, S., Alves, M. M. and Sigmundsson, F. 1999. Low rates of deformation of the Furnas and Fogo volcanoes, Sao Miguel, Azores, observed with the Global Positioning System, 1993-1997, J. Volc. Geotherm. Res., 92, 83-94. (182)

Kristmannsdóttir, H., Björnsson, A., Pálsson, S. and Sveinbjörnsdóttir, Á. E. 1999. The impact of the 1996 subglacial volcanic eruption in Vatnajökull on the river Jökulsá á Fjöllum, North Iceland. Journal of Volcanology and Geothermal Research, 92: 359-372. (191)

Lindström, M., Flodén, T., Grahn, Y., Hagenfeldt, S., Ormö, J., Sturkell, E. & Törnberg, R. 1999. The Lower Palaeozoic of the probable impact crater of Hummeln, Sweden. GFF 121, 243-252. (195)

Nõlvak, J., Grahn, Y. and Sturkell, E.F.F. 1999. Chitinozoan biostratigrahy of the middle Ordovician Dalby Limestone in the Fjäcka section, Siljan district, Sweden. Proceedings of the Estonian Academy of Science 48/2, 75-85. (194)

Ormö, J., Sturkell, E., Blomqvist, G. & Törnberg, R. 1999. Mutually constrained geophysical data for the evaluation of a proposed impact structure: Lake Hummeln, Sweden. Tectonophysics 133, 155-177. (196)

Oskarsson, N., Pálsson, K., Ólafsson, H. and Ferreira, T. 1999. Experimental monitoring of carbon dioxide by low power IR sensors: Soil degassing in the Furnas volcanic centre, AÇORES. J. Volcanol. Geotherm. Res., 92, 181-193. (183)

Rossi, M.J. 1999. Plan-curvature effect on the formation of tumuli on shield volcanoes: an example from Leitin lava flow field in Iceland. Zeitschrift für Geomorphologie 114, 1-10. (193)

Sigmundsson, F., Durand, P. and Massonnet, D. 1999. Opening of an eruptive fissure and seaward displacement at Piton de la Fournaise volcano measured by RADARSAT satellite radar interferometry, Geophys. Res. Lett., 26, 533-536, 1999. (180)

Sturkell, E. 1999. Vulkanutbrott i Grímsvötn 18-28 december 1998. Geologiskt forum 21, 10-11. (181)

Sverrisdóttir, G., Hauksdóttir, S., Axelsson, G. and Árnason, Á. 1999. Chemical monitoring during reinjection in the Laugaland geothermal system, N-Iceland. In: Ármannsson, H., (ed.) Geochemistry of the Earth´s Surface, Balkema, Rotterdam, 547-550. (192)

1998:

Arnadottir, Th., Sigmundsson, F. and Delaney, P. T. 1998. Sources of crustal deformation associated with the Krafla, Iceland, eruption of September 1984, Geophys. Res. Lett., 25, 1043-1046. (179)

Giannopoulos, G., Lagios E. and Sigmundsson, F. 1998. Global Positioning System (GPS) monitoring of Santorini volcano, The European Laboratory Volcanoes, Proceedings of the Second workshop held in Santorini, Greece, 2-4 May 1996, edited by R. Casale et al., pp. 271-279, European Commission, Brussels. (188)

Hilton, D. R., Gronvold, K., Sveinbjornsdottir, A. E. and Hammerschmidt, K. 1998. Helium isotope evidence for off-axis degassing of the Icelandic hotspot. Chemical Geology, vol.149, no.3-4, pp.173-187. (220)

Rymer, H., Cassidy, J., Locke, C. A. and Sigmundsson, F. 1998. Post-eruptive gravity changes from 1990 to 1996 at Krafla volcano, Iceland, J. Volc. Geotherm. Res., 87, 141-149. (189)

Slater, L., Jull, M., McKenzie, D. and Gronvold, K. 1998. Deglaciation effects on mantle melting under Iceland; results from the northern volcanic zone. Earth and Planetary Science Letters, vol.164, no.1-2, pp.151-164. (221)

1997:

Einarsson, P., Brandsdottir, B.. Gudmundsson, M. T., Bjornsson, H., Grönvold, K. and Sigmundsson, F. 1997. Center of the Iceland hotspot experiences volcanic unrest, EOS, Transaction of the American Geophysical Union, 70,369-375. (178)

Gudmundsson, A., Marti, J. and Turon, E. 1997. Stress fields generating ring faults in volcanoes. Geoph. Res. Letters, 24: 1559-1846. (176)

Gudmundsson, M. T., Sigmundsson, F. and Bjornsson, H. 1997. Ice-volcano interaction of the 1996 Gjalp subglacial eruption, Vatnajokull, Iceland, Nature, 389, 954-957. (171)

Jonsson, S., Einarsson, P. and Sigmundsson, F. 1997. Extension across a divergent plate boundary, the Eastern Volcanic Rift Zone, south Iceland, 1967-1994, observed with GPS and electronic distance measurements, J. Geophys. Res., 102, 11913-11929. (169)

Rossi, M. 1997. Morphology of the 1984 open channel lava flow at Krafla volcano, northern Iceland. Geomorphology, 20: 95-112. (177)

Sigmundsson, F., Einarsson, P., Rognvaldsson, S. Th., Foulger, G. R., Hodgkinson, K. M. and Thorbergsson, G. 1997. The 1994-1995 seismicity and deformation at the Hengill triple junction, Iceland: Triggering of earthquakes by minor magma injection in zone of horizontal shear stress, J. Geophys. Res., 102, 15151-15161. (170)

Sigmundsson, F., Vadon, H. and Massonnet, D. 1997. Readjustment of the Krafla spreading segment to crustal rifting measured by satellite radar interferometry, Geophys. Res. Lett., 24, 1843-1846. (175)

Vadon H. and Sigmundsson, F. 1997. Crustal deformation from 1992-1995 at the Mid-Atlantic Ridge, SW Iceland, mapped by satellite radar interferometry, Science, 275, 193-197. (164)

Wolf, D., Barthelmes, F. and Sigmundsson. F. 1997. Predictions of deformation and gravity change caused by recent melting of the Vatnajokull ice cap, Iceland, in: Gravity, Geoid, and Marine Geodesy, edited by Segawa, J., Fujimoto, H., and S. Okubo, pp. 311-319, Springer-Verlag, Berlin, 1997. (172)

Zielinsky,G. A., Mayewski, P. A., Meeker, D., Grönvold, K., Germani, M. S., Whitlow, S., Twickler, M. and Taylor, K. 1997. Volcanic aerosol records and tephrochronology of the Summit, Greenland, ice cores. J. Geophys. Res. 102, 26625-26640. (219)

1996:

Angelier, J., Rognvaldsson, S., Bergerat, F., Gudmundsson, A., Jakobsdóttir, S. and Stefansson, R. 1996. Earthquake focal mechanisms and recent faulting: A seismotectonic analysis in the Vordufell area, South Iceland seismic zone. In: Bardur Thorkelsson (ed.) Seismology in Europe (ESC General Assembly), p. 199-204. Iceland Meteorol. Office, Reykjavik. (166)

Bödvarsson, R., Rögnvaldsson, S. Th., Jakobsdóttir, S. S., Slunga, R. and Stefánsson, R. 1996. The SIL Data Aquisition and Monitoring System. Seismological Research Letters, 67, 35-46. (173)

Einarsson, P., Sigmundsson, F., Hofton, M.A., Foulger, G.R. and Jacoby, W. 1996. An Experiment in Glacio-Isostasy near Vatnajökull, Iceland, 1991. Jökull, 44, 29-39. (162)

Gudmundsson, A. 1996. Stress Fields controlling Strike-Slip Faulting in Iceland. Phys. Chem. Earth, 21, 261-265. (174)

Gudmundsson, A. 1996. Geometry, displacements and driving stresses of seismogenic faults in Iceland. In: Bardur Thorkelsson (ed.) Seismology in Europe (ESC General Assembly), p. 193-198. Iceland Meteorol. Office, Reykjavik. (165)

Gudmundsson, A., Bergerat, F. and Angelier, J. 1996. Off-rift and rift-zone paleostresses in Northwest Iceland. Tectonophysics, 255, 211-228. (156)

Oskarsson, N. 1996. Volcanic components in groundwater: Monitoring and interpretation. In: Barberi et al. (eds.) The mitigation of volcanic hazards, p. 393-401. ECSC-EC-EAEC, Brussels. (160)

Oskarsson, N., Helgason, O. and Sigurdsson, H. 1996. Oxidation state of iron in tektite glasses from the Crataceous-Tertiary boundary. In: G. Ryder et al. (eds) The Cretaceous-Tertiary Event and Other Catastrophes in Earth History (Special Paper 307) p. 445-452. The Geological Society of America, Boulder. (163)

Rossi, M. 1996. Morphology and mechanism of eruption of postglacial shield volcanoes in Iceland. Bull. Volc., 57, 530-540. (147)

Rossi, M. J. and Gudmundsson, A., 1996. The morphology and formation of flow-lobe tumuli on Icelandic shield volcanoes. J. of Volc. Geoth. Res., 72, 291-308. (157)

Sigmundsson, F. 1996. Crustal deformation at volcanoes. In: Barberi et al. (eds.) The mitigation of volcanic hazards, p. 237-257. ECSC_EC_EAEC, Brussels. (158)

Sigmundsson, F. and Einarsson, P. 1996. The south Iceland seismic zone: Crustal deformation from GPS measurements (in Icelandic), Natturufraedingurinn, 66, 37-46. (149)

Sigvaldason, G. E. 1996. Precursors to the Krafla rifting episode and human reactions. A case history. In: Barberi et al. (eds.) The mitigation of volcanic hazards, p. 443-449. ECSC-EC-EAEC, Brussels. (161)

Thordarson, Th., Self, S., Óskarsson, N. and Hulsebosch, T. 1996. Sulfur, chlorine, and fluorine degassing and atmospheric loading by the 1783-1784 AD Laki (Skaftár Fires) eruption in Iceland. Bull. Volcanol., 58, 205-225. (167)

Tryggvason, E. 1996. Precision of ground deformation observations. In: Barberi et al. (eds.) The mitigation of volcanic hazards, p. 365-372. ECSC-EC-EAEC, Brussels. (159)

Werner, R., Schmincke, H.-U. and Sigvaldason, G. 1996. A new model for the evolution of table mountains: volcanological and petrological evidence from Herdubreid and Herdubreidartögl volcanoes (Iceland). Geol. Rundsch., 85, 390-397. (148)

1995:

Camitz, J., Sigmundsson, F., Foulger, G. Jahn, C.-H. Voelksen, C. and Einarsson, P. 1995. Plate boundary deformation and continuing deflation of the Askja volcano, North Iceland, determined with GPS, 1987-1993, Bull. Volc., 57, 136-145. (134)

Carvalho, M.R., Cruz, J.V., Coutinho, R., Óskarsson, N., and Gíslason, S., 1995. Chemistry of spring waters from Furnas caldera: Estimate of fluxes of Carbon dioxide. In: Barberi et al. (eds.) The European laboratory volcanoes, p. 253-261. ECSC-EC-EAEC, Brussels. (154)

Grönvold, K. 1995. Lucy og aldur mannmeiðsins. Náttúrufræðingurinn, 65, 73-76. (145)

Grönvold, K. 1995. Öskulagatímatalið, geislakol, ískjarnar og aldur fornleifa. In: Mjöll Snæsdóttir (ed.) Árbók hins íslenzka fornleifafélags 1994, p 163-184. Hið íslenzka fornleifafélag, Reykjavík, 1995. (144)

Grönvold, K., Óskarsson, N., Johnsen, S. J., Clausen, H. B., Hammer, C. U., Bond, G., and Bard, E. 1995. Ash layers from Iceland in the Greenland GRIP ice core correlated with oceanic and land sediments. Earth and Planetary Science Letters, 135, 149-155. (141)

Gudmundsson, A. 1995. Stress fields associated with oceanic transform faults. Earth and Planetary Science Letters, 136, 603-614. (146)

Gudmundsson, A. 1995. The geometry and growth of dykes. In: Baer & Heimann (eds.) Physics and Chemistry of Dykes, p. 23-33. Balkema, Rotterdam. (142)

Gudmundsson, A. 1995.Ocean-ridge discontinuities in Iceland. Journ. Geol. Soc., London, 152, 1011-1015. (140)

Gudmundsson, A. 1995. Infrastructure and mechanics of volcanic systems in Iceland. J. Volcanol. Geotherm. Res., 64, 1-22. (131)

Gudmundsson A. and Fjäder, K. 1995. Dikes, minor faults and mineral veins associated with a transform fault in North Iceland: Reply. J. Structural Geol., 17, 1633-1636. (139)

Långbacka, B. O. and Gudmundsson, A. 1995. Extensional tectonics in the vicinity of a transform fault in north Iceland. Tectonics, 14, 294-306. (132)

Mochizuki, M., Kodaira, S., Shiobara, H., Shimamura, H., Brandsdóttir, B., Sturkell, E., Guðmundsson, G. and Stefánsson, R. 1995. Seismicity in the Tjörnes Fracture Zone, off NE-Iceland, Derived from an Ocean Bottom Seismographic Observation (in Japanese) [257-270]. (143)

Nunes, J.C., Halldorsson, H. and Tryggvason, E. 1995. Continuously recording tiltmeters at the Furnas volcano. In: Barberi et al. (eds.) The European laboratory volcanoes, p. 228-232. ECSC-EC-EAEC, Brussels. (155)

Oskarsson, N., Gíslason, S.R., Carvalho, R., Coutinho, R., Cruz, V. and Ferreira, T. 1995. Water types of the Furnas volcanic center, Açores: Carbon dioxide plume interacting with the hydrosphere. In: Barberi et al. (eds.) The European laboratory volcanoes, p. 244-247. ECSC-EC-EAEC, Brussels. (153)

Oskarsson, N., Gíslason, S.R., Carvalho, R., Coutinho, R., Cruz, V. and Ferreira, T. 1995. Stable isotopes in fluids of the Furnas volcanic center, Açores. In: Barberi et al. (eds.) The European laboratory volcanoes, p. 248-252. ECSC-EC-EAEC, Brussels. (152)

Schiellerup, H. 1995. Generation and equilibration of olivine tholeiites in the northern rift zone of Iceland. A petrogenetic study of the Bláfjall table mountain. J. Volc. Geoth. Res., 65, 161-179. (135)

Sigmundsson, F. 1995. GPS monitoring of volcanic deformation in Iceland, In Cahiers du Centre Europeen de Geodynamique et de Seismologie, vol 8 (Proceedings of the workshop "New challenges for geodesy in volcanoes monitoring", held in Walferdange, Luxembourg, 14-16 June, 1993), edited by P. Melchior, European Center for Geodynamics and Seismology, p. 79-98. (137)

Sigmundsson, F., Alves, M. M., Palsson, K., Alvez, J. L., and Tryggvason, E. 1995. 1993 GPS measurements at the Furnas volcano: Comparison of L1 and L3 GPS data for volcano monitoring, in: The European Laboratory Volcanoes, Proceedings of the International workshop held in Catania Sicily, 18-21 June 1994, edited by F. Barberi, European Commission, ECSC-EC-EAEC, Brussels. (151)

Sigmundsson, F., Einarsson, P., Bilham, R., and Sturkell, E. 1995. Rift-transform kinematics in south Iceland: Deformation from Global Positioning System measurements, 1986-1992, J. Geophys. Res., 100, 6235-6248, 1995. (133)

Sigmundsson, F., Tryggvason, E., Alves, M. M., Alves, J. L., Palsson, K. and Olafsson, H. 1995. Slow inflation of the Furnas volcano, Sao Miguel, Azores, suggested from initial leveling and Global Positioning System measurements, Geophys. Res. Lett., 22, 1681-1684. (136)

Soesoo, A. 1995. Diversity of plutonic rocks in the oceanic crust: The Thverartindur central volcanic complex, SE Iceland. Proc. Estonian Acad.Sci. Geol., 1995, 44, 234-248. (168)

Tryggvason, E. 1995. Precision of Tilt-Leveling on Active Volcanoes in Iceland. In. Barthemely et al. (eds.) New challenges for Geodesy in Volcanoes Monitoring, Workshop Proceedings, 8, 193, C.E.G.S., Luxembourg. (138)

Tryggvason, E., Alves, M. M., Alves, J. L., Nunes, J. C. and Ólafsson, H. 1995. Ground deformation measurements 1991-1993 at Furnas volcano, Sao Miguel, Azores. In: Barberi et al. (eds.) The European laboratory volcanoes, p. 209-227. ECSC-EC-EAEC, Brussels. (150)

1994:

Burnard, P. G., Stuart, F. M., Turner, G. and Oskarsson, N. 1994. Air contamination of basaltic magmas: Implications for high 3He/4He mantle Air Isotopic composition. J. Geoph. Res., 99, 17,709-17,715. (125)

Fjäder,K., Gudmundsson, A. and Forslund, T. 1994. Dikes, minor faults and mineral veins associated with a transform fault in North Iceland. J. Structural Geology, 16, 109-119. (119)

Gudmunsson, O., Brandsdottir, B., Menke, W. and Sigvaldason, G. E. 1994: The crustal magma chamber of the Katla volcano in south Iceland revealed by 2-D seismic undershooting. Geophys. J. Int., 119, 277-296. (126)

Jakobsson, S. and Oskarsson, N. 1994. The system C-O in equilibrium with graphite at high pressure and temperature: An experimental study. Geochimica et Cosmochimica Acta, 58, 9-17. (121)

Jónasson, K. 1994. Rhyolite volcanism in the Krafla central volcano, north-east Iceland. Bull. Volc., 56, 516-528. (128)

Kumpulainen, R. A. 1994. Fissure-fill and tunnel-fill sediments: expressions of permafrost and increased hydrostatic pressure. J. Quat. Sci., 9, 59-72. (122)

Oskarsson, N., Grönvold, K. and Sigvaldason, G. E. 1994. Compositions of basalts above the Iceland mantle plume. Min. Mag., 58a, 676-678. (127)

Óskarsson, N., Helgason, Ö. and Steinthórsson, S. 1994. Oxidation state of iron in mantle-derived magmas of the Icelandic rift zone. Hyperfine Interactions, 91, 733-737. (129)

Sigvaldason, G. E. 1994. Vulkansk aktivitet i 50 år. Nordisk Tidskrift, 6, 499-503. (130)

Sturkell, E., Sigmundsson, F., Einarsson, P. and Bilham, R. 1994. Strain accumulation 1986-1992 across the Reykjanes Peninsula plate boundary, Iceland, determined from GPS measurements, Geophys. Res. Lett., 21, 125-128. (120)

Tryggvason, E. 1994. Observed ground deformation at Hekla, Iceland prior to and during the eruptions of 1970, 1980-1981 and 1991. J. Volcanol. Geotherm. Res., 61, 281-291. (124)

Tryggvason, E. 1994. Surface deformation at the Krafla volcano, North Icleand, 1982-1992. Bull. Volcanol., 56, 98-107. (123)

1993:

Gudmundsson, A. 1993. On the structure and formation of fracture zones. Terra Nova, 5, 215-224.(113)

Gudmundsson, A. and Brynjolfsson, S. 1993. Overlapping rift-zone segments and the evolution of the South Iceland seismic zone. Geophys. Res. Lett. , 20, 1903-1906. (115)

Gudmundsson, A., Brynjolfsson, S. and Jonsson, M. T. 1993. Structural analysis of a transform fault-rift zone junction in North Iceland. Tectonophysics, 220, 205-221. (112)

Hemond, C., Arndt, N.T., Lichtenstein, U., Hofmann, A.W., Oskarsson, N. and Steinthorsson, S. 1993. The Heterogeneous Iceland Plume: Nd-Sr-O Isotopes and Trace Element Constraints. J. Geoph. Res., 98, 15, 833-15,850. (116)

Rymer, H. and Tryggvason, E. 1993. Gravity and elevation changes at Askja, Iceland. Bull. Volc., 55, 362-371. (114)

1992:

Forslund, T. and Gudmunsson, A. 1992. Structure of Tertiary and Pleistocene normal faults in Iceland. Tectonics, 11, 57-68. (99)

Gautneb, H. and Gudmunsson, A. 1992. Effect of local and regional stress fields on sheet emplacement in West Iceland, J. Volcanol. Geotherm. Res., 51, 339-356. (106)

Gíslason, S.R., Andrésdóttir, A., Sveinbjörnsdóttir, Á. E., Óskarsson, N., Thordarson, Th., Thorsander, P., Novak, M. and Zak, K. 1992. Local effects of volcanoes on the hydrosphere: Example from Hekla, southern Iceland. In: Kharaka and Maest (eds.) Water -Rock Interaction, p. 477-481. Balkema, Rotterdam. (104)

Gudmunsson, A. 1992. Formation and growth of normal faults at the divergent plate boundary in Icleland. Terra Nova, 4, 464-471. (108)

Gudmunsson, A., Bergerat, F., Angelier, J. and Villemin, T. 1992. Extensional tectonics of southwest Iceland. Bull. Soc. Géol. France, 163, 561-570. (107)

Gudmunsson, A., Oskarsson, N., Grönvold, K., Sæmundsson, K., Sigurdsson, O., Stefansson, R., Gislason, S., Einarsson, P., Brandsdottir, B., Larsen, G. Johannesson H. and Thordarson, T. 1992. The 1991 eruption of Hekla, Iceland. Bull. Volcanol. 54, 238-246. (100)

Gudmunsson, A. and Sæmundsson, K. 1992. Heklugosið 1991: Gangur gossins og aflfræði Heklu. Náttúrufræðingurinn, 61, 145-158. (110)

Helgason, Ö., Oskarsson, N. and Sigvaldason, G.E. 1992. Oxygen fugacity stratification of a magma chamber revealed by Mössbauer spectroscopy: Evidence from the 1875 Askja eruption, N. Iceland. Hyperfine Interactions, 70, 989-992. (103)

Oskarsson, N. and Hansteen, T. H. 1992. The use of graphite for the removal of oxygen from nitrogen purge gas in high tempurature microthermometry using the Linkam TH1500 stage. Eur. J. Mineral, 4, 865-871. (109)

Sigmundsson, F. 1992. Tectonic implications of the 1989 Afar earthquake sequence, Geophys. Res. Lett., 19, 877-880. (186)

Sigmundsson, F. and Einarsson, P. 1992. Glacio-isostatic crustal movements caused by historical volume change of the Vatnajokull ice cap, Iceland, Geophys. Res. Lett., 19, 2123-2126. (187)

Sigvaldason, G. E. 1992. Recent hydrothermal explosion craters in an old hyaloclastite flow, central Iceland. J. Volcanol. Geotherm. Res., 54, 53-63. (111)

Sigvaldason, G. E., Annertz, K. and Nilsson, M. 1992. Effect of glacier loading/deloading on volcanism: postglacial volcanic production rate of the Dyngjufjöll area, Central Iceland. Bull. Volanol., 54, 385-392. (105)

Sturkell, E. , Brandsdóttir, B., Shimamura, H. and Mochizuki, M. 1992. Seismic crustal structure along the Axafjordur through at the eastern margin of the Tjörnes fracture zone, N-Iceland. Jökull, 42, 13-23. (117)

Tryggvason, E. 1992. Höskuldsvatn: Cause of unusually high lake level in 1991. Jökull, 42, 25-29. (118)

1991:

Bergh, S. G. and Sigvaldason, G. E. 1991. Pleistocene mass-flow deposits of basaltic hyaloclastite on a shallow submarine shelf, South Iceland. Bull. Volcanol., 53, 597-611. (95)

Elliott, T. R., Hawkesworth, C. J. and Grönvold, K. 1991. Dynamic melting of the Iceland plume. Nature, 351, 201-206. (92)

Forslund, T. and Gudmundsson, A. 1991. Crustal spreading due to dikes and faults in southwest Iceland. Journ. Structural Geolology, 13, 443-457. (91)

Gudmundsson, A. and Böckström, K. 1991. Structure and development of the Sveinagja graben, Northeast Iceland. Tectonophysics, 200, 111-125. (96)

Hansteen, T. H. 1991. Multi-stage evolution of the picritic Mælifell rocks, SW Iceland: constraints from mineralogy and inclusions of glass and fluid in olivine. Contrib. Mineral. Petrol., 109, 225-239. (97)

Marty, B., Gunnlaugsson, E., Jambon, A., Oskarsson, N. Ozima, M. Pineau, F. and Torssander, P. 1991. Gas geochemistry of geothermal fluids, the Hengill area, southwest rift zone of Iceland. Chemical Geology, 91, 207-225. (93)

Nicholson, H., Condomines, M., Fitton, J. G.,Fallick, A. E.,Grönvold K. and Rogers, G. 1991. Geochemical and Isotopic Evidence for Crustal Assimilation Beneath Krafla, Iceland. Journ. of Petrology, 32, 1005-1020. (94)

Sigmarsson, O., Condomines, M., Grönvold, K. and Thordarson, T. 1991. Extreme magma homogeneity in the 1783-84 Lakagigar eruption: Origin of a large volume of evolved basalt in Iceland. Geophys. Res. Letters, 18, 2229-2232. (98)

1990:

Calderone, G. M., Grönvold, K. and Oskarsson, N. 1990. The welded air-fall tuff layer at Krafla, northern Iceland: a composite eruption triggered by injection of basaltic magma. J. Volcanol. Geotherm. Res., 44, 303-314. (90)

Gudmundsson, A. 1990. Dyke emplacement at divergent plate boundaries. In: A.J.Parker et al. (eds.), Mafic Dykes and Emplacement Mechanisms, p. 47-62. Balkema, Rotterdam. (89)

Gudmundsson, A. 1990. Emplacement of dikes, sills and crustal magma chambers at divergent plate boundaries. Tectonophysics, 176, 257-275. (85)

Hilton, D.R., Grönvold, K., O'Nions, R.K. and Oxburgh, E.R. 1990. Regional distribution of 3He anomalies in the Icelandic crust. Chemical Geology, 88, 55-67. (88)

Jakobsson, S. and Oskarsson, N. 1990. Experimental determination of fluid compositions in the system C-O-H T and low fO2. Geochimica et Cosmochimica Acta, 54, 355-362. (82)

Oskarsson, N. 1990. Carbon dioxide bursts of Lake Nyos, Cameroon, modelled as periodic supersaturation in a countercurrent reactor. J. Volcanol. Geotherm. Res., 42, 307-318. (87)

Trönnes, R. G. 1990. Basaltic Melt Evolution of the Hengill Volcanic System, SW Iceland, and Evidence for Clinopyroxene Assimilation in Primitive Tholeiitic Magmas. Journ. Geophys. Res., 95, 15,893-15,910. (86)

1989:

Arnórsson, S., Gíslason, S.R., Gestsdóttir, K. og Óskarsson, N. 1989. Chlorine and boron in natural waters in Iceland. In: Miles (ed.), Water Rock Interaction, p. 37-40. Balkema, Rotterdam. (84)

Gautneb, H., Gudmundsson, A. and Oskarsson, N. 1989. Structure, petrochemistry and evolution of a sheet swarm in an Icelandic central volcano. Geol. Mag., 126, 659-673. (79)

Gudmundsson, A. 1989. Innskotatíðni kvikuhólfa og gostíðni eldstöðvakerfa. Náttúrufræðingurinn, 59, 39-54. (77)

Imsland, P. 1989. Kagoshimaþingið og japönsk eldfjöll. Náttúrufræðingurinn, 59, 141-158 and 197-213. (83)

Imsland, P. 1989. Study Models for Volcanic Hazards in Iceland. In: IAVCEI Proceedings in Volcanology 1, J.H. Latter (ed.), Volcanic Hazards, p. 36-56. Springer-Verlag. (75)

Opheim, J. A. and Gudmundsson, A. 1989. Formation and geometry of fractures, and related volcanism, of the Krafla fissure swarm, northeast Iceland. Geol. Soc. Am. Bull., 101, 1608-1622. (80)

Sigvaldason, G. E. 1989. International Conference on Lake Nyos Disaster, Yaoundé, Cameroon 16-20 March, 1987: Conclusions and Recommendations. J. Volcanol. Geotherm. Res., 39, 97-107. (81)

Torssander, P. 1989. Sulfur isotope ratios of Icelandic rocks. Contrib. Mineral. Petrol., 102, 18-23. (76)

Tryggvason, E. 1989. Ground deformation in Askja, Iceland: its source and possible relation to flow of the mantle plume. J. Volcanol. Geotherm. Res., 39, 61-71. (78)

1988:

Gautneb, H. 1988. Structure, age and formation of dykes on the island of Smöla, Central Norway. Norsk Geologisk Tidsskrift, 68, 275-288. (74)

Gudmundsson, A. 1988. Effect of tensile stress concentration around magma chambers on intrusion and extrusion frequencies. J. Volcanol. Geotherm. Res., 35, 179-194. (71)

Gudmundsson, A. 1988. Formation of collapse calderas. Geology, 16, 808-810. (70)

Hemond, Ch., Condomines, M., Fourcade, S., Allégre, C.J., Oskarsson N. and Javoy, M. 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. (69)

Torssander, P. 1988. Sulfur isotope ratios of Icelandic lava incrustations and volcanic gases. J. Volcanol. Geotherm. Res., 35, 227-235. (72)

1987:

Gudmundsson, A. 1987. Lateral magma flow, caldera collapse, and a mechanism of large eruptions in Iceland. J. Volcanol. Geotherm. Res., 34, 65-78. (68)

Guðmundsson, A. 1987. Kvikuhólf í gosbeltum Íslands. Náttúrufræðingurinn, 57, 37-53. (66)

Guðmundsson, A. 1987. Formation and mechanics of magma reservoirs in Iceland. Geophys. J.R. astr. Soc., 91, 27-41. (65)

Guðmundsson, A. 1987. Reply to comment on "Possible effect of aspect ratios of magma chambers on eruption frequency". Geology, 15, 878-879. (64)

Guðmundsson, A. 1987. Geometry, formation and development of tectonic fractures on the Reykjanes Peninsula, southwest Iceland. Tectonophysics, 139, 295-308. (63)

Guðmundsson, A. 1987. Tectonics of the Thingvellir fissure swarm, SW Iceland. Journ. Structural Geology, 9, 61-69. (60)

Steinthórsson, S., Óskarsson, N., Arnórsson, S. and Gunnlaugsson, E. 1987. Metasomatism in Iceland: Hydrothermal alteration and remelting of oceanic crust. In: H.C. Helgeson (ed.), Chemical Transport in Metasomatic Processes, p. 355-387. D. Reidel Publ. Co. (67)

Tryggvason, E. 1987. Myvatn lake level observations 1984-1986 and ground deformation during a Krafla eruption. J. Volcanol. Geotherm. Res., 31, 131-138. (62)

1986:

Gudmundsson, A. 1986. Possible effect of aspect ratios of magma chambers on eruption frequency. Geology, 14, 991-1094. (59)

Gudmundsson, A. 1986. Mechanical Aspects of Postglacial Volcanism and Tectonics of the Reykjanes Peninsula, Southwest Iceland. Journ. Geoph. Res., 91, 12,711-12,721. (58)

Guðmundsson, A. 1986. Sprungurnar á Þingvöllum og myndun þeirra. Náttúrufræðingurinn, 56, 1-18. (54)

Oskarsson, N. 1986. Chemical surveillance of volcanoes in Iceland. Per. Mineral., 55, 75-89. (73)

Sigvaldason, G. E. and Óskarsson, N. 1986. Fluorine in basalts from Iceland.Contrib. Mineral. Petrol., 94, 263-271. (57)
Páll Imsland, 1986: The volcanic eruption on Jan Mayen, January 1985: interaction between a volcanic island and a fracture zone. J. Volcanol. Geotherm. Res., 28: 45-54. (56)

Tryggvason, E. 1986. The 1975-1981 rifting episode in North-Iceland. Royal Soc. of New Zealand Bull., 24, 349-355. (61)

Tryggvason, E. 1986. Multiple magma reservoirs in a rift zone volcano: Ground deformation and magma transport during the September 1984 eruption of Krafla, Iceland. J. Volcanol. Geotherm. Res., 28, 1-44. (55)

1985:

Imsland, P. 1985. Vulkaner is och kokande vatten - Islands geologiska historia - En kort översikt. Gardar, XVI-XVII, 8-14. (53)

Imsland, P. 1985. Eldgosið á Jan Mayen í janúar 1985. Jökull, 35, 97-102. (51)

Imsland, P. 1985. Úr þróunarsögu jarðskorpunnar við sunnanverðan Faxaflóa, sprungumyndunarsaga. Náttúrufræðingurinn, 54, 63-76. (49)

Oskarsson, N. Steinthorsson, S. and Sigvaldason, G.E. 1985. Iceland Geochemical Anomaly: Origin, Volcanotectonics, Chemical Fractionation and Isotope Evolution of the Crust. Journ. Geoph. Res., 90, 10,011-10,025. (52)

Steinthorsson, S., Oskarsson, N. and Sigvaldason, G. E. 1985. Origin of Alkali Basalts in Iceland: A Plate Tectonic Model. Journ. Geoph. Res., 90, 10,027-10,042. (52b)

1984:

Grönvold, K. 1984. Bergfræði Skaftáreldahrauns. In: Gísli Á. Gunnlaugsson et al.(eds.), Skaftáreldar 1783-1784, p. 49-107. Mál og menning, Rvk. (45)

Grönvold, K. and Jóhannesson, H. 1984. Eruption in Grímsvötn 1983; course of events and chemical studies of the tephra. Jökull, 34, 1-11. (43)

Larsen, G. 1984. Recent volcanic history of the Veidivötn fissure swarm, southern Iceland - An approach to volcanic risk assessment. J. Volcanol. Geotherm. Res., 22, 33-58. (41)

Larsen, G. and Þórðarson, Þ. 1984. Gjóskan frá Skaftáreldum 1783. Útlit og helstu einkenni. In: Gísli Á. Gunnlaugsson et al. (eds.), Skaftáreldar 1783-1784, p. 59-66. Mál og menning, Rvk. (46)

Mörk, M. B. E. 1984. Magma mixing in the post-glacial Veidivötn fissure eruption, southeast Iceland: a microprobe study of mineral and glass variations. Lithos, 17, 55-75. (43b)

Ólafsson, M., Imsland, P. and Larsen, G. 1984. Nornahár. II. Efni, eiginleikar og myndun. Náttúrufræðingurinn, 53: 135-144. (48) Níels Óskarsson, Karl Grönvold and Guðrún Larsen, 1984: Móðan frá Skaftáreldum. Uppruni, magn og gerð. In: Gísli Á. Gunnlaugsson et al. (eds.), Skaftáreldar 1783-1784, p. 67-79. Mál og menning, Rvk. (47)

Oskarsson, N. 1984. Monitoring of fumarole discharge during the 1975-1982 rifting in Krafla volcanic center, north Iceland. J. Volcanol. Geotherm. Res., 22, 97-121. (42)

Tryggvason, E. 1984. Widening of the Krafla Fissure Swarm During the 1975-1981 Volcano- tectonic Episode. Bull. Volc., 47, 47-69. (50)

1983:

Condomines, M., Grönvold, K., Hooker, P.J., Muehlenbachs, K., O'Nions, R.K., Óskarsson, N. and Oxburgh, E.R. 1983. Helium, oxygen, strontium and neodymium isotopic relationships in Icelandic volcanics. Earth and Planetary Science Letters, 66, 125-136. (40)

Grönvold, K., Larsen, G., Einarsson, P., Thorarinsson, S. and Saemundsson, K. 1983. The Hekla eruption 1980-1981. Bull. Volc., 46, 349-363. (44)

Imsland, P. 1983. Um náttúrufarslegar ógnir. Almenn samantekt. Tímarit VFÍ, 68, 8-10. (35)

Imsland, P. 1983. Biased chemical Range of Icelandic and oceanic Basalt Analyses: The Result of different sampling Methods and compositionally selective kinematic Evolution within the Rift Zones. Jökull, 33, 33-38. (33)

Imsland, P. 1983. Iceland and the Ocean Floor. Comparison of Chemical Characteristics of the Magmatic Rocks and SomeVolcanic Features. Contrib.Mineral. Petrol., 83, 31-37. (32)

Kjartansson, E. and Gronvold, K. 1983. Location of a magma reservoir beneath Hekla Volcano, Iceland. Nature, 301, 139-141. (30)

Steinþórsson, S. and Óskarsson, N. 1983. Chemical Monitoring of Jökulhlaup Water in Skeiðará and the geothermal system in Grímsvötn, Iceland. Jökull, 33, 73-86. (34)

Tarantola, A., Tryggvason, E. and Nercessian, A. 1983. Volcanic or seismic prediction as an inverse problem. Annales Geophysicae, 1, 443-450. (38)

Thy, P. 1983. Spinel Minerals in Transitional and Alkali Basaltic Glasses from Iceland. Contrib. Mineral. Petrol., 83, 141-149. (37)

Thy, P. 1983. Phase Relations in Transitional and Alkali Basaltic Glasses from Iceland. Contrib. Mineral. Petrol., 82, 232-251. (36)

1982:

Óskarsson, N., Sigvaldason, G. E. and Steinthórsson, S. 1982. A Dynamic Model of Rift Zone Petrogenesis and the Regional Petrology of Iceland. Journal of Petrology, 23, 28-74. (28)

Sigvaldason, G. E. 1982. Fluids in volcanic and geothermal systems. In: Chemistry and Geochemistry of Solutions at High Temperatures and Pressures. Physics and Chemistry of the Earth, 13-14, p. 179-195. Oxford, Pergamon Press. (27)

Tryggvason, E. 1982. Observed ground deformation during the Krafla eruption of March 16, 1980. Arquipélago, Univ. Açores, Série Ciencias da Natureza, III: 45-106. (31)

Tryggvason, E. 1982. Recent ground deformation in continental and oceanic rift zones.Continental and Oceanic Rifts, Geodynamic Series, 8, 17-29. (29)

1981:

Condomines, M., Morand, P., Allégre, C. J. and Sigvaldason, G. 1981. 230Th-238U disequilibria in historical lavas from Iceland. Earth and Planetary Science Letters, 55, 393-406. (39)

Larsen, G. 1981. Tephrochronology by microprobe glass analysis. In: S. Self and R.S.J. Sparks (eds.), Tephra Studies, p. 95-102. D. Reidel Publ. Co. (25)

Óskarsson, N. 1981. The chemistry of Icelandic lava incrustations and the latest stages of degassing. J. Volcanol. Geotherm. Res., 10, 93-111. (24)

1980:

Einarsson, E. H., Larsen, G. and Thorarinsson, S. 1980. The Sólheimar tephra layer and the Katla eruption of ~ 1357. Acta Naturalia Islandica, 28, 24 p. (26)

Mäkipää, H. T. 1980. Partitioning of chromium, manganese, cobalt and nickel between olivine and basaltic liquid: an experimental study. Bull. Geol. Soc. Finland, 52, 175-191. (23)

Óskarsson, N. 1980. The interaction between volcanic gases and tephra: fluorine adhering to tephra of the 1970 Hekla eruption. J. Volcanol. Geotherm. Res., 8, 251-266. (22)

Prestvik, T. 1980. Petrology of hybrid intermediate and silicic rocks from Öræfajökull, southeast Iceland. Geol. Föreningens i Stockholm Förhandlingar, 101[1979], 299-307. (21)

Tryggvason, E. 1980. Subsidence Events in the Krafla Area, North-Iceland, 1975-1979. Journ. Geophys., 47, 141-153. (19)

1979:

Björnsson, A., Johnsen, G., Sigurdsson, S., Thorbergsson, G. and Tryggvason, E. 1979. Rifting of the Plate Boundary in North Iceland 1975-1978. J. Geophys. Res., 84, 3029-3038. (16)

Griffin, W.L. and Jorgensen, K.A. 1979. The Grefsheim (Norway) meteorite: A new L5 chondrite. Meteoritics, 14: 117-120. (15)

Helgason, Ö., Oskarsson, N. and Mörup, S. 1979. Mössbauer spectroscopic studies of reference samples of Icelandic igneous rocks. Journal de Physique, 40, C2-452-453. (14)

Larsen, G. 1979. Um aldur Eldgjárhrauna. Náttúrufræðingurinn, 49, 1-26. (20)

Larsen, G., Grönvold, K. and Thorarinsson, S. 1979. Volcanic eruption through a geothermal borehole at Námafjall, Iceland. Nature, 278: 707-710. (13)

Mäkipää, H. 1979. Contribution to the Fe2O3/FeO determination in basaltic rocks. Bull. Geol. Soc. Finland, 51, 125-129. (18)

Mäkipää, H. 1979. Crystallization history of some postmetamorphic diabases in Åland, Häme and Satakunta, Finland. A theoretical and experimental study. Bull. Geol. Soc. Finland, 51, 93-124. (17)

1978:

Larsen, G. and Thorarinsson, S. 1978. H4 and Other Acid Hekla Tephra Layers. Jökull, 27, 28-46. (10)

Mäkipää, H. 1978. Mineral equilibria, geothermometers and geobarometers in some Icelandic hyaloclastites. Bull. Geol. Soc. Finland, 50, 113-134. (12)

Mäkipää, H. 1978. Petrological relations in some Icelandic basaltic hyaloclastites. Bull. Geol. Soc. Finland, 50, 81-112. (11)

1977:

Björnsson, A., Saemundsson, K., Einarsson, P., Tryggvason, E. and Grönvold, K. 1977. Current rifting episode in north Iceland. Nature, 226, 318-323. (6)

Imsland, P., Larsen, J. G., Prestvik, T. and Sigmond, E. M. 1977. The geology and petrology of Bouvetöya, south Atlantic Ocean. Lithos, 10: 213-234. (8)

Larsen, J. G. 1977. Transition from low potassium olivine tholeiites to alkali basalts on Ubekendt Ejland. Meddelelser om Grönland, 200: 1-42. (9)

1976:

Grönvold, K. 1976. Variation and origin of magma types in the Namafjall area, North Iceland. Bull. Soc. géol. France, XVIII: 869-870. (5)

O'Nions, R. K., Pankhurst R. J. and Grönvold, K. 1976. Nature and Development of Basalt Magma Sources Beneath Iceland and the Reykjanes Ridge. Journal of Petrology, 17: 315-338. (3)

Sigmond, E. M. and Andresen, A. 1976. Rb-Sr isochron age of meta-andesites from Skorpehei,Suldal, south Norway. Norsk Geologisk Tidskrift, 56: 315-319. (7)

Sigvaldason, G. E. and Óskarsson, N. 1976. Chlorine in basalts from Iceland. Geochimica et Cosmochimica Acta, 40: 777-789. (2)

Sigvaldason, G.E., Steinthorsson, S., Oskarsson, N. and Imsland, P. 1976. The simultaneous production of basalts, enriched and depleted in large lithophilic trace ions (LIL), within the same fissure swarms in Iceland. Bull. Soc. géol. France, XVIII: 863-867. (4)

1974:

Sigvaldason, G. E. and Steinthórsson, S. 1974: Chemistry of tholeiitic basalts from Iceland and their relation to the Kverkfjöll hot spot. In: Kristjansson (ed.), Geodynamics of Iceland and the North Atlantic Area, p. 155-164. D. Reidel Publ. Company, Dordrecth-Holland. (1)