Olgeir Sigmarsson
Olgeir Sigmarsson
Unknown affiliation
Verified email at hi.is
Title
Cited by
Cited by
Year
Iron and lithium isotope systematics of the Hekla volcano, Iceland—evidence for Fe isotope fractionation during magma differentiation
JA Schuessler, R Schoenberg, O Sigmarsson
Chemical Geology 258 (1-2), 78-91, 2009
2242009
Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow
MT Gudmundsson, K Jónsdóttir, A Hooper, EP Holohan, SA Halldórsson, ...
Science 353 (6296), 2016
1812016
Chemical mobilizations in laterites: evidence from trace elements and 238U-234U-230Th disequilibria
O Dequincey, F Chabaux, N Clauer, O Sigmarsson, N Liewig, JC Leprun
Geochimica et cosmochimica acta 66 (7), 1197-1210, 2002
1552002
A detailed Th, Sr and O isotope study of Hekla: differentiation processes in an Icelandic volcano
O Sigmarsson, M Condomines, S Fourcade
Contributions to Mineralogy and Petrology 112 (1), 20-34, 1992
1421992
Katla volcano, Iceland: magma composition, dynamics and eruption frequency as recorded by Holocene tephra layers
BA Óladóttir, O Sigmarsson, G Larsen, T Thordarson
Bulletin of Volcanology 70 (4), 475-493, 2008
1362008
Origin of silicic magma in Iceland revealed by Th isotopes
O Sigmarsson, C Hémond, M Condomines, S Fourcade, N Oskarsson
Geology 19 (6), 621-624, 1991
1231991
Uranium and 10 Be enrichments by fluids in Andean arc magmas
O Sigmarsson, M Condomines, JD Morris, RS Harmon
Nature 346 (6280), 163-165, 1990
1221990
Timescales of magma chamber processes and dating of young volcanic rocks
M Condomines, PJ Gauthier, O Sigmarsson
Reviews in Mineralogy and Geochemistry 52 (1), 125-174, 2003
1092003
Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland
BA Óladóttir, G Larsen, O Sigmarsson
Bulletin of Volcanology 73 (9), 1187-1208, 2011
992011
Oxygen isotope heterogeneity and disequilibria of olivine crystals in large volume Holocene basalts from Iceland: evidence for magmatic digestion and erosion of Pleistocene …
I Bindeman, A Gurenko, O Sigmarsson, M Chaussidon
Geochimica et Cosmochimica Acta 72 (17), 4397-4420, 2008
932008
Trace element degassing and enrichment in the eruptive plume of the 2000 eruption of Hekla volcano, Iceland
S Moune, PJ Gauthier, SR Gislason, O Sigmarsson
Geochimica et Cosmochimica Acta 70 (2), 461-479, 2006
922006
Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snæfellsjökull volcanoes
E Martin, O Sigmarsson
Contributions to Mineralogy and Petrology 153 (5), 593-605, 2007
912007
Melting of a subducting oceanic crust from U–Th disequilibria in Austral Andean lavas
O Sigmarsson, H Martin, J Knowles
Nature 394 (6693), 566-569, 1998
911998
Remobilization of silicic intrusion by mafic magmas during the 2010 Eyjafjallajökull eruption
O Sigmarsson, I Vlastélic, R Andreasen, I Bindeman, JL Devidal, S Moune, ...
Solid Earth 2 (2), 271-281, 2011
892011
Mantle and crustal contribution in the genesis of recent basalts from off-rift zones in Iceland: constraints from Th, Sr and O isotopes
O Sigmarsson, M Condomines, S Fourcade
Earth and Planetary Science Letters 110 (1-4), 149-162, 1992
861992
Provenance of basaltic tephra from Vatnajökull subglacial volcanoes, Iceland, as determined by major-and trace-element analyses
BA Óladóttir, O Sigmarsson, G Larsen, JL Devidal
The Holocene 21 (7), 1037-1048, 2011
852011
Environmental pressure from the 2014–15 eruption of Bárðarbunga volcano, Iceland
SR Gíslason, G Stefansdottir, M Pfeffer, S Barsotti, T Jóhannsson, ...
European Association of Geochemistry, 2015
842015
Origin of 226Ra–230Th disequilibria in arc lavas from southern Chile and implications for magma transfer time
O Sigmarsson, J Chmeleff, J Morris, L Lopez-Escobar
Earth and Planetary Science Letters 196 (3-4), 189-196, 2002
832002
Recent volatile evolution in the magmatic system of Hekla volcano, Iceland
S Moune, O Sigmarsson, T Thordarson, PJ Gauthier
Earth and Planetary Science Letters 255 (3-4), 373-389, 2007
822007
Short magma chamber residence time at an Icelandic volcano inferred from U-series disequilibria
O Sigmarsson
Nature 382 (6590), 440-442, 1996
791996
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