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Fractional magma degassing at Holuhraun, Bardabunga volcanic system, Iceland ?

Pierre-J Gauthier , Séverine Moune , Olgeir Sigmarsson
EGU General Assembly, Apr 2019, Vienne, Austria
Poster communications hal-02404323v1

Trace element systematics of olivine from historical eruptions of Lanzarote, Canary Islands: Constraints on mantle source and melting mode

Alejandra Gómez-Ulla , Olgeir Sigmarsson , Gudmundur H. Gudfinnsson
Chemical Geology, 2017, 449, pp.99 - 111. ⟨10.1016/j.chemgeo.2016.11.021⟩
Journal articles hal-01639562v1
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Prolonged trachyte storage and unusual remobilization at Piton de la Fournaise, La Réunion Island, Indian Ocean: Li, O, Sr, Nd, Pb and Th Isotope study

Ivan Vlastélic , Patrick Bachèlery , Olgeir Sigmarsson , Kenneth T. Koga , Estelle F. Rose-Koga , et al.
Journal of Petrology, 2021, ⟨10.1093/petrology/egab048⟩
Journal articles hal-03267101v1
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Fractional degassing of S, Cl and F from basalt magma in the Bárðarbunga rift zone, Iceland

Olgeir Sigmarsson , Séverine Moune , Pierre-J Gauthier
Bulletin of Volcanology, 2020, 82 (7), ⟨10.1007/s00445-020-01391-7⟩
Journal articles hal-03001649v1

Clinopyroxene-melt experiments of Holuhraun basalt, Iceland: implications for magma storage and transport in the crust

Didier Laporte , Olgeir Sigmarsson , Baptiste Haddadi , Antoine Mathieu , Franck Pointud
EGU General Assembly 2019, Apr 2019, Vienne, Austria. Vol. 21, EGU2019-7077-1
Poster communications hal-02527232v1

Dynamic magma mixing revealed by the 2010 Eyjafjallajökull eruption

Olgeir Sigmarsson , Ivan Vlastélic , R. Andreasen , I. Bindeman , J.-L. Devidal , et al.
Solid Earth Discussions, 2011, 3, pp.591-613. ⟨10.5194/sed-3-591-2011⟩
Journal articles hal-00674051v1

Could Iceland be a modern analogue for the Earth's early continental crust?

Erwan Martin , Hervé Martin , Olgeir Sigmarsson
Terra Nova, 2008, 20 (6), pp.463-468. ⟨10.1111/j.1365-3121.2008.00839.x⟩
Journal articles hal-00381783v1

New Thorium Isotope Ratio Measurements in Silicate Reference Materials: A-THO, AGV-2, BCR-2, BE-N, BHVO-2 and BIR-1

Marion Carpentier , Abdelmouhcine Gannoun , Christian Pin , Olgeir Sigmarsson
Geostandards and Geoanalytical Research, 2016, 40 (2), pp.239 - 256. ⟨10.1111/j.1751-908X.2015.00385.x⟩
Journal articles istex hal-01637080v1

Low-pressure differentiation of tholeiitic lavas as recorded in segregation veins from Reykjanes (Iceland), Lanzarote (Canary Islands) and Masaya (Nicaragua)

Erwan Martin , Olgeir Sigmarsson
Contributions to Mineralogy and Petrology, 2007, 154 (5), pp.559-573. ⟨10.1007/s00410-007-0209-5⟩
Journal articles istex hal-00330441v1

Detrital zircon resolve longevity and evolution of silicic magmatism in extinct volcanic centers: A case study from the East Fjords of Iceland

T.L. Carley , C.F. Miller , O. Sigmarsson , M.A. Coble , C.M. Fisher , et al.
Geosphere, 2017, 13 (5), pp.1640 - 1663. ⟨10.1130/GES01467.1⟩
Journal articles hal-01713319v1
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Influence of tectonism on the composition of acid and basaltic lava

Olgeir Sigmarsson
Iceland in the Central Northern Atlantic : hotspot, sea currents and climate change, May 2010, Plouzané, France
Conference papers hal-00482056v1

Trace element degassing and enrichment in the eruptive plume of the 2000 eruption of Hekla volcano, Iceland

Séverine Moune , Pierre-Jean Gauthier , S.R. Gislason , Olgeir Sigmarsson
Geochimica et Cosmochimica Acta, 2006, 70 (2), pp.461-479
Journal articles hal-00272134v1

Geochemistry of Igneous Rocks in Iceland: a review

Olgeir Sigmarsson , J. Maclennan , M. Carpentier
Jökull, 2008, 58, pp.139 à 160
Journal articles insu-00354561v1

Origin of Icelandic basalts: a review of their petrology and geochemistry.

Olgeir Sigmarsson , S. Steinthorsson
Journal of Geodynamics, 2007, 43 (1), pp.87-100. ⟨10.1016/j.jog.2006.09.016⟩
Journal articles istex hal-00272294v1

Comment on "Continental geochemical signatures in dacites from Iceland and implications for models of early Archaean crust formation" by Willbold, M., Hegner, E., Stracke A. and Rocholl A.

Erwan Martin , H. Martin , Olgeir Sigmarsson
Earth and Planetary Science Letters, 2010, 293, pp.218-219. ⟨10.1016/j.epsl.2010.02.021⟩
Journal articles istex hal-00635420v1
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Remobilization of silicic intrusion by mafic magmas during the 2010 Eyjafjallajökull eruption

Olgeir Sigmarsson , Ivan Vlastélic , R. Andreasen , I. Bindeman , Jean-Luc Devidal , et al.
Solid Earth, 2011, 2 (2), pp.271-281. ⟨10.5194/se-2-271-2011⟩
Journal articles insu-02949513v1
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The sulfur budget of the 2011 Grímsvötn eruption, Iceland

Olgeir Sigmarsson , Baptiste Haddadi , Simon Carn , Séverine Moune , Jonas Gudnason , et al.
Geophysical Research Letters, 2013, 40, pp.6095-6100. ⟨10.1002/2013GL057760⟩
Journal articles hal-00992831v1

Excess Po-210 in 2010 Eyjatjallajokull tephra (Iceland): Evidence for pre-eruptive gas accumulation

Olgeir Sigmarsson , Michel Condomines , Pierre-Jean Gauthier
Earth and Planetary Science Letters, 2015, 427, pp.66-73. ⟨10.1016/j.epsl.2015.06.054⟩
Journal articles hal-01217142v1

Temporal variations in the diversity of primitive melts supplied to the Santorini silicic magmatic system and links to lithospheric stresses

T. Flaherty , Timothy H. Druitt , L. Francalanci , Pierre Schiano , Olgeir Sigmarsson
Contributions to Mineralogy and Petrology, 2022, 177, ⟨10.1007/s00410-022-01941-6⟩
Journal articles insu-03777183v1
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Magma storage beneath Grímsvötn volcano, Iceland, constrained by clinopyroxene-melt thermobarometry and volatiles in melt inclusions and groundmass glass

B. Haddadi , O. Sigmarsson , G. Larsen
Journal of Geophysical Research : Solid Earth, 2017, 122 (9), pp.6984 - 6997. ⟨10.1002/2017JB014067⟩
Journal articles hal-01713309v1

Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland

Bergrun Oladottir , G. Larsen , Olgeir Sigmarsson
Bulletin of Volcanology, 2011, 73, pp.1187-1208. ⟨10.1007/s00445-011-0461-4⟩
Journal articles istex hal-00683312v1

Elevated CO2 concentrations and volatile-trace element ratios suggest carbon-rich fluid flux melting under Lanzarote, Canary Islands

Alejandra Gómez-Ulla , Marie Edmonds , Olgeir Sigmarsson
EGU General Assembly 2019, Apr 2019, Vienne, Austria. , Vol. 21 (EGU2019-7197), Geophysical Research Abstracts
Poster communications hal-02527240v1

Depth of magma differentiation before the Holuhraun eruption, Bárdarbunga (Iceland), constraint by trace element systematics

Olgeir Sigmarsson
EGU General Assembly 2019,, Apr 2019, Vienne, Austria
Conference papers hal-02527271v1

Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow

Magnús Gudmundsson , Kristín Jónsdóttir , Andrew Hooper , Eoghan P. Holohan , Sæmundur A. Halldórsson , et al.
Science, 2016, 353 (6296), ⟨10.1126/science.aaf8988⟩
Journal articles hal-01637368v1

Gliðnunarhraði Íslands metinn með aldursgreiningum á megineldstöðvum Austurlands

O. Sigmarsson , Erwan Martin , Jean-Louis Paquette , Valérie Bosse , K. Geirsson
Náttúrufræðingurinn, 2012, 82 ((1-4)), pp.105-111
Journal articles hal-01437872v1

Volume estimates of nine Katla tephra layers (similar to 1860 BC-870 AD)

Bergrún Arna Óladóttir , G. Larsen , Olgeir Sigmarsson
Jökull, 2014, 63, pp.23-40
Journal articles hal-02109166v1

Environmental pressure from the 2014–15 eruption of Bárðarbunga volcano, Iceland

S.R. Gislason , G. Stefánsdóttir , M.A. Pfeffer , S. Barsotti , T. Jóhannsson , et al.
Geochemical Perspectives Letters, 2015, 1, pp.84-93. ⟨10.7185/geochemlet.1509⟩
Journal articles hal-02115370v1

Delimiting Baroarbunga and Askja volcanic systems with Sr- and Nd-isotope ratios

Olgeir Sigmarsson , S.A. Halldórsson
Jökull, 2015, 65, pp.17-28
Journal articles hal-02115023v1

L'éruption sur la péninsule de Reykjanes, Islande, directement alimentée par la fonte de l'asthénosphère

Olgeir Sigmarsson , Sæmundur Halldórsson , Enikö Bali , Jóhann Gunnarsson Robin , Alberto Caracciolo , et al.
27e édition de la Réunion des Sciences de la Terre, SGF, CNRS, Laboratoire de Géologie de Lyon ou l’étude de la Terre, des planètes et de l’environnement, Nov 2021, Lyon, France
Conference papers hal-03588001v1

The historical basanite - alkali basalt - tholeiite suite at Lanzarote, Canary Islands: Carbonated melts of heterogeneous mantle source?

Alejandra Gómez-Ulla , Olgeir Sigmarsson , María José Huertas , Jean-Luc Devidal , Eumenio Ancochea
Chemical Geology, 2018, 494, pp.56 - 68. ⟨10.1016/j.chemgeo.2018.07.015⟩
Journal articles hal-01862142v1