Olgeir Sigmarsson 1958-
Sigmarsson, Olgeir
VIAF ID: 193000733 ( Personal )
Permalink: http://viaf.org/viaf/193000733
Preferred Forms
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- 100 1 _ ‡a Sigmarsson, Olgeir
- 100 1 _ ‡a Sigmarsson, Olgeir
Works
Title | Sources |
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The 1996 and 1998 subglacial eruptions beneath the Vatnajökull ice sheet in Iceland : contransting geochemical and geophysical inferences on magma migration | |
Aðskilnaður vökva og kristalla í Surtseyjarhraunum : vísbending um uppruna FeTi-basalts. | |
Aldur yngsta bergs Ljósufjalla á Snæfellsnesi | |
Ascension et dégazage des magmas basaltiques : application aux volcans d'Islande et de la Chaîne des Puys (France) | |
Ascent and degassing of basaltic magmas : case studies in Iceland and in the Chaîne des Puys (France). | |
Bræðslutilraunir á Eldgjárbasalti : tilraunaaðferðir og myndunarferli FeTi-basalts. | |
Caractérisation des conditions redox du manteau terrestre dans différents contextes géodynamiques | |
Characterization of the redox conditions of the Earth’s mantle in the different geodynamic settings. | |
Chemical mobilizations in laterites : evidence from trace elements and 238U-234U-230Th disequilibria | |
Deciphering eruption history and magmatic processes from tephra in Iceland | |
Delimiting Bárðarbunga and Askja volcanic systems with Sr- and Nd-isotope ratios | |
The dynamic geology of Iceland | |
Effusive activity in the 1963-1967 Surtsey eruption, Iceland : flow emplacement and growth of small lava shields | |
Les éléments halogènes dans les magmas, du traçage des conditions de stockage aux flux éruptifs | |
Les éruptions historiques de Lanzarote, Iles Canaries : contribution des inclusions vitreuses à la compréhension de la formation des liquides primitives et leur sources. | |
Etude géochimique des magmas acides d'Islande : mode de genèse, implications sur l'évolution géodynamique islandaise et sur la formation de la proto-croûte continentale | |
Geochemical study of silicic magmas from Iceland : genesis mechanism, implications for the Icelandic geodynamic evolution and for the formation of the primitive continental crust. | |
Geochemistry of igneous rocks in Iceland: a review | |
GEOCHIMIE ISOTOPIQUE DU THORIUM DES ILES OCEANIQUES (ISLANDE, CANARIES) ET DES ZONES DE SUBDUCTION (INDONESIE ET CHILI) | |
Gliðnunarhraði Íslands : metinn með aldursgreiningum á megineldstöðvum Austurlands | |
Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow | |
Historical eruptions of Lanzarote, Canary Islands : Inference of magma source and melt generation from olivine and its melt inclusions | |
Holocene eruption history and magmatic evolution of the subglacial volcanoes, Grimsvötn, Bárdarbunga and Kverkfjöll beneath Vatnajökull, Iceland | |
Hvað leynist undir Kötlu? : breytingar á kvikukerfi síðustu 8400 árin í ljósi gjóskulagarannsókna | |
Hvítserkur : fjall sem myndaðist í setskál | |
Iron and lithium isotope systematics of the Hekla volcano, Iceland : evidence for Fe isotope fractionation during magma differentiation | |
The Katla volcano S-Iceland : holocene tephra stratigraphy and eruption frequency | |
Magma dynamics at Hekla (Iceland) volcano constrained by U-series disequilibria | |
Magma residence time beneath the Piton de la Fournaise Volcano, Reunion Island, from U-series disequilibria | |
Mantle processes from recent basalts of the Snæfellsnes Volcanic Zone, Iceland | |
Origin of 226Ra-230Th disequilibria in arc lavas from southern Chile and implications for magma transfer time | |
Radon and its daughters in volcanic gas plumes : instrumental developments, metrology and contribution to the study of magmatic degassing processes. | |
Le radon et ses descendants dans les panaches de gaz volcanique : développements instrumentaux, métrologie et apports à la compréhension des processus de dégazage magmatique | |
Rapid magma transfer beneath the southern volcanic zone, Chile | |
Segregations in Surtsey lavas (Iceland) reveal extreme magma differentiation during late stage of flow emplacement | |
Skyggnst í fortíð Grímsvatna, Bárðarbungu og Kverkfjalla | |
Survival of the Mýrdalsjökull ice cap through the Holocene thermal maximum : evidence from sulphur contents in Katla tephra layers (Iceland) from the last ∼8400 years | |
Systematics of the trace elements U and Th in Laki, Grímsvötn and Gjálp volcanics, fractionational crystallaization and volcanological consequences | |
Time constraints on the origin of large volume basalts derived from O-isotope and trace element mineral zoning and U-series disequilibria in the Laki and Grimsvotn volcanic system | |
Trace element degassing and enrichment in the eruptive plume of the 2000 eruption of Hekla volcano, Iceland | |
Trondhjemitic and granitic melts formed by frational crystallization of an olivine tholeiite from Reykjanes Peninsula, Iceland | |
U, Ra and Ba incorporation during preciptitation of hyddrothermal carbonates : implications for 226Ra-Ba dating of impure travertines | |
U-series radioactive disequilibria 238U-230Th-226Ra : discussions on sources and processes responsible for volcanism of the Anden cordillera and on the deglaciation in Iceland. | |
Volatils mineurs (S, Cl, F) et éléments traces dans les magmas pré-éruptifs et les gaz volcaniques | |
Volume estimates of nine Katla tephra layers (~1860 BC - 870 AD) |