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Guðmundur Heiðar Guðfinnsson - Research Scholar
–
School of Engineering and Natural Sciences
Guðmundur Heiðar Guðfinnsson
Íslenska
Research Scholar
Research Scientist
Location
Askja / N-148
Phone
525 - 4148
Email
gudmhg [at] hi.is
Unit
Institute of Earth Sciences
ORCID site
https://orcid.org/0000-0003-3275-9866
Research portal – Guðmundur Heiðar Guðfinnsson
Courses 2024 - 2025
EFN612M - Molecular spectroscopy and reaction dynamics
JAR312G - Igneous Petrology
Education
1995
,
Doktorspróf
,
University of Texas at Dallas
,
Geosciences
1985
,
BS
,
University of Iceland
,
Geology
1980
,
Stúdentspróf
,
Hamrahlíð Junior College
,
Junior College
Professional Experience
2013 -
,
Associate Research Professor,
Institute of Earth Sciences, University of Iceland
2008 -
2013,
Geologist,
Iceland GeoSurvey
2006 -
2008,
,
2000 -
2005,
,
1998 -
2000,
,
1996 -
1998,
,
1995 -
1996,
,
1985 -
1988,
Geologist,
Building Research Institute
Published works
2025
Deconvolution of high and low-temperature alteration processes along the contact zones of basaltic-dike intrusions in basaltic host rocks of different permeabilities – implications for geothermal exploration
Geothermics
2024
A dynamic mid-crustal magma domain revealed by the 2023 to 2024 Sundhnúksgígar eruptions, Iceland
Science
Hydraulically linked reservoirs simultaneously fed the 1975–1984 Krafla Fires eruptions: Insights from petrochemistry
Earth and Planetary Science Letters
2023
Magma plumbing architectures and timescales of magmatic processes during historical magmatism on the Reykjanes Peninsula, Iceland
Earth and Planetary Science Letters
2022
Rapid shifting of a deep magmatic source at Fagradalsfjall volcano, Iceland
Nature
Ancient and recycled sulfur sampled by the Iceland mantle plume
Earth and Planetary Science Letters
Oxygen isotope evidence for progressively assimilating trans-crustal magma plumbing systems in Iceland
Geology
2021
Eruptive history and volcano-tectonic evolution of Paka volcanic complex in the northern Kenya rift: Insights into the geothermal heat source
Journal of African Earth Sciences
A reappraisal of peridotite solidus phase equilibria from 6 to 14 GPa in the system CaO-MgO-Al2O3-SiO2
Journal of Petrology
2020
Temporal evolution of magma and crystal mush storage conditions in the Bárðarbunga-Veiðivötn volcanic system, Iceland
Lithos
Olivine chemistry reveals compositional source heterogeneities within a tilted mantle plume beneath Iceland
Earth and Planetary Science Letters
Mid-crustal storage and crystallization of Eyjafjallajökull ankaramites, South Iceland
JOKULL
Major and trace element partitioning between majoritic garnet and carbon dioxide-rich liquid in model carbonated peridotite at 10 GPa and interpretations of the element chemistry of majoritic garnet inclusions in diamonds from the subcontinental mantle of Brazil and Guinea
Lithos
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluids
Geology
2019
Signature of deep mantle melting in South Iceland olivine
Contributions to Mineralogy and Petrology
Clinopyroxene–Liquid Equilibria and Geothermobarometry in Natural and Experimental Tholeiites: the 2014–2015 Holuhraun Eruption, Iceland
Journal of Petrology
2018
Geochemistry and petrology of Holocene lavas in the Bárðardalur region, N-Iceland. Part I: Geochemical constraints on source provenance
Jökull
Zircon and apatite-bearing pyroxene hornblendite mantle xenolith from Hungary, Carpathian-Pannonian region
Lithos
Petrology and geochemistry of the 2014–2015 Holuhraun eruption, central Iceland: compositional and mineralogical characteristics, temporal variability and magma storage
Contributions to Mineralogy and Petrology
Melt inclusion constraints on volatile systematics and degassing history of the 2014–2015 Holuhraun eruption, Iceland
Contributions to Mineralogy and Petrology
Quantitative measurement of olivine composition in three dimensions using helical-scan X-ray micro-tomography
American Mineralogist
2017
Trace element systematics of olivine from historical eruptions of Lanzarote, Canary Islands: Constraints on mantle source and melting mode
Chemical Geology
2016
Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow
Science
2015
Environmental pressure from the 2014-15 eruption of Bárðarbunga volcano, Iceland
Geochemical Perspectives Letters
2014
Melting phase relations of model carbonated peridotite from 2 to 3 GPa in the system CaO-MgO-Al2O3-SiO2-CO2and further indication of possible unmixing between carbonatite and silicate liquids
Journal of Geophysical Research: Solid Earth
IDDP—The chemistry of the IDDP-01 well fluids in relation to the geochemistry of the Krafla geothermal system
Geothermics
Melting phase equilibria of model carbonated peridotite from 8 to 12 GPa in the system CaO-MgO-Al2O3-SiO2-CO2 and kimberlitic liquids in the Earth's upper mantle
American Mineralogist
2013
Silicate liquid-carbonatite liquid transition along the melting curve of model, vapor-saturated peridotite in the system CaO-MgO-Al2O3-SiO2-CO2from 1.1 to 2 GPa
Journal of Geophysical Research: Solid Earth
2011
Melting Phase Relations of Simplified Carbonated Peridotite at 12-26 GPa in the Systems CaO-MgO-SiO2-CO2 and CaO-MgO-Al2O3-SiO2-CO2: Highly Calcic Magmas in the Transition Zone of the Earth
Journal of Petrology
Xenon and Argon: A contrasting behavior in olivine at depth
Geochimica et Cosmochimica Acta
Oceanic Volcanism from the Low-velocity Zone – without Mantle Plumes
Journal of Petrology
2010
Experimentally dictated stability of carbonated oceanic crust to moderately great depths in the Earth: Results from the solidus determination in the system CaO-MgO-Al2O3-SiO2-CO2
Journal of Geophysical Research
2009
Experimental constraints on rutile saturation during partial melting of metabasalt at the amphibolite to eclogite transition, with applications to TTG genesis
American Mineralogist
2008
Primary carbonatite melt from deeply subducted oceanic crust
Nature
2007
Origin of the Oceanic Lithosphere
Journal of Petrology
2006
Response to the comment by M. Lustrino on “High-pressure melting experiments on garnet clinopyroxenite and the alkalic–tholeiitic transition in ocean-island basalts” by Keshav et al. [Earth Planet. Sci. Lett. 223, 365–379 (2004)]
Earth and Planetary Science Letters
2005
Continuous Gradations among Primary Carbonatitic, Kimberlitic, Melilititic, Basaltic, Picritic, and Komatiitic Melts in Equilibrium with Garnet Lherzolite at 3–8 GPa
Journal of Petrology
Kimberlite petrogenesis: Insights from clinopyroxene-melt partitioning experiments at 6 GPa in the CaO-MgO-Al2O3-SiO2-CO2 system
Geochimica et Cosmochimica Acta
Carbonate-rich melts in the oceanic low-velocity zone and deep mantle
Special Paper 388: Plates, plumes and paradigms
2004
Silica-poor, mafic alkaline lavas from ocean islands and continents: Petrogenetic constraints from major elements
Journal of Earth System Science
High-pressure melting experiments on garnet clinopyroxenite and the alkalic to tholeiitic transition in ocean-island basalts
Earth and Planetary Science Letters
2002
Generation of mid-ocean ridge basalts at pressures from 1 to 7 GPa
Geochimica et Cosmochimica Acta
2001
A pressure-independent geothermometer for primitive mantle melts
Journal of Geophysical Research: Solid Earth
2000
Melting Behaviour of Model Lherzolite in the System CaO–MgO–Al2O3–SiO2–FeO at 0·7–2·8 GPa
Journal of Petrology
1998
The effect of trace elements on the olivine-wadsleyite transformation
American Mineralogist
1996
Melting relations of model lherzolite in the system CaO-MgO-Al2O3-SiO2at 2.4-3.4 GPa and the generation of komatiites
Journal of Geophysical Research: Solid Earth
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