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Guðmundur Heiðar Guðfinnsson - Research Scholar

Guðmundur Heiðar Guðfinnsson

–

School of Engineering and Natural Sciences

Guðmundur Heiðar Guðfinnsson

Research Scholar

Research Scientist

Location
Askja / N-148
Phone
525 - 4148
Email
gudmhg [at] hi.is

Unit
Institute of Earth Sciences

Published works

2023

Magma plumbing architectures and timescales of magmatic processes during historical magmatism on the Reykjanes Peninsula, IcelandEarth and Planetary Science Letters

2022

Rapid shifting of a deep magmatic source at Fagradalsfjall volcano, IcelandNature
Ancient and recycled sulfur sampled by the Iceland mantle plumeEarth and Planetary Science Letters
Oxygen isotope evidence for progressively assimilating trans-crustal magma plumbing systems in IcelandGeology

2021

Eruptive history and volcano-tectonic evolution of Paka volcanic complex in the northern Kenya rift: Insights into the geothermal heat sourceJournal of African Earth Sciences
A reappraisal of peridotite solidus phase equilibria from 6 to 14 GPa in the system CaO-MgO-Al2O3-SiO2Journal of Petrology

2020

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 GuineaLithos
Geothermal energy and ore-forming potential of 600 °C mid-ocean-ridge hydrothermal fluidsGeology
Mid-crustal storage and crystallization of Eyjafjallajökull ankaramites, South IcelandJOKULL
Olivine chemistry reveals compositional source heterogeneities within a tilted mantle plume beneath IcelandEarth and Planetary Science Letters
Temporal evolution of magma and crystal mush storage conditions in the Bárðarbunga-Veiðivötn volcanic system, IcelandLithos

2019

Clinopyroxene–Liquid Equilibria and Geothermobarometry in Natural and Experimental Tholeiites: the 2014–2015 Holuhraun Eruption, IcelandJournal of Petrology
Signature of deep mantle melting in South Iceland olivineContributions to Mineralogy and Petrology

2018

Geochemistry and petrology of Holocene lavas in the Bárðardalur region, N-Iceland. Part I: Geochemical constraints on source provenanceJökull
Quantitative measurement of olivine composition in three dimensions using helical-scan X-ray micro-tomographyAmerican Mineralogist
Melt inclusion constraints on volatile systematics and degassing history of the 2014–2015 Holuhraun eruption, IcelandContributions to Mineralogy and Petrology
Petrology and geochemistry of the 2014–2015 Holuhraun eruption, central Iceland: compositional and mineralogical characteristics, temporal variability and magma storageContributions to Mineralogy and Petrology
Zircon and apatite-bearing pyroxene hornblendite mantle xenolith from Hungary, Carpathian-Pannonian regionLithos

2017

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

2016

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

2015

Environmental pressure from the 2014-15 eruption of Bárðarbunga volcano, IcelandGeochemical 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 liquidsJournal of Geophysical Research: Solid Earth
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 mantleAmerican Mineralogist
IDDP—The chemistry of the IDDP-01 well fluids in relation to the geochemistry of the Krafla geothermal systemGeothermics

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 GPaJournal of Geophysical Research: Solid Earth

2011

Oceanic Volcanism from the Low-velocity Zone – without Mantle PlumesJournal of Petrology
Xenon and Argon: A contrasting behavior in olivine at depthGeochimica et Cosmochimica Acta
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 EarthJournal 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-CO2Journal of Geophysical Research

2009

Experimental constraints on rutile saturation during partial melting of metabasalt at the amphibolite to eclogite transition, with applications to TTG genesisAmerican Mineralogist

2008

Primary carbonatite melt from deeply subducted oceanic crustNature

2007

Origin of the Oceanic LithosphereJournal 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 GPaJournal of Petrology
Kimberlite petrogenesis: Insights from clinopyroxene-melt partitioning experiments at 6 GPa in the CaO-MgO-Al2O3-SiO2-CO2 systemGeochimica et Cosmochimica Acta
Carbonate-rich melts in the oceanic low-velocity zone and deep mantleSpecial Paper 388: Plates, plumes and paradigms

2004

Silica-poor, mafic alkaline lavas from ocean islands and continents: Petrogenetic constraints from major elementsJournal of Earth System Science
High-pressure melting experiments on garnet clinopyroxenite and the alkalic to tholeiitic transition in ocean-island basaltsEarth and Planetary Science Letters

2002

Generation of mid-ocean ridge basalts at pressures from 1 to 7 GPaGeochimica et Cosmochimica Acta

2001

A pressure-independent geothermometer for primitive mantle meltsJournal of Geophysical Research: Solid Earth

2000

Melting Behaviour of Model Lherzolite in the System CaO–MgO–Al2O3–SiO2–FeO at 0·7–2·8 GPaJournal of Petrology

1998

The effect of trace elements on the olivine-wadsleyite transformationAmerican Mineralogist

1996

Melting relations of model lherzolite in the system CaO-MgO-Al2O3-SiO2at 2.4-3.4 GPa and the generation of komatiitesJournal of Geophysical Research: Solid Earth

Keywords for Specialisation:

Igneous petrology

Research Scientist