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Olgeir Sigmarsson
Olgeir Sigmarsson
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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
2882009
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), aaf8988, 2016
2642016
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
1672002
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, 20-34, 1992
1651992
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, 475-493, 2008
1572008
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
1371991
Uranium and 10Be enrichments by fluids in Andean arc magmas
O Sigmarsson, M Condomines, JD Morris, RS Harmon
Nature 346 (6280), 163-165, 1990
1251990
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
1222008
Holocene volcanic activity at Grímsvötn, Bárdarbunga and Kverkfjöll subglacial centres beneath Vatnajökull, Iceland
BA Óladóttir, G Larsen, O Sigmarsson
Bulletin of Volcanology 73, 1187-1208, 2011
1192011
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
1162003
Silicic magma petrogenesis in Iceland by remelting of hydrothermally altered crust based on oxygen isotope diversity and disequilibria between zircon and magma with …
I Bindeman, A Gurenko, T Carley, C Miller, E Martin, O Sigmarsson
Terra Nova 24 (3), 227-232, 2012
1102012
Environmental pressure from the 2014–15 eruption of Bárđarbunga volcano, Iceland
SR Gíslason, G Stefansdottir, M Pfeffer, S Barsotti, T Jóhannsson, ...
European Association of Geochemistry, 2015
1072015
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
1052006
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
1051998
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
1002011
Crustal thermal state and origin of silicic magma in Iceland: the case of Torfajökull, Ljósufjöll and Snćfellsjökull volcanoes
E Martin, O Sigmarsson
Contributions to Mineralogy and Petrology 153, 593-605, 2007
982007
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
972011
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
952007
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
941992
Origin of Icelandic basalts: A review of their petrology and geochemistry
O Sigmarsson, S Steinthórsson
Journal of Geodynamics 43 (1), 87-100, 2007
922007
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Artikelen 1–20