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Stefán Arnórsson

Stefán Arnórsson

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Earth Science
Iceland
2026

D-Index & Metrics

Earth Science

D-Index
47
Citations
9247
World Ranking
3971
National Ranking
9

Research.com Recognitions

  • 2026 - Research.com Earth Science in Iceland Leader Award
  • 2025 - Research.com Earth Science in Iceland Leader Award

Overview

Stefán Arnórsson is affiliated with the University of Iceland in Iceland and works in multiple intersecting fields including geochemistry, environmental chemistry, and materials science. Their research covers a range of scientific topics concentrating on geochemical processes, isotope studies, and material behavior at the molecular level.

The scientist's work integrates several subfields such as:

  • Geochemistry and Petrology
  • Environmental Chemistry
  • Mechanics of Materials
  • Materials Chemistry
  • Atomic and Molecular Physics, and Optics

Stefán's research contributions address diverse topics, including:

  • Groundwater and Isotope Geochemistry
  • Methane Hydrates and Related Phenomena
  • Hydrocarbon exploration and reservoir analysis
  • Mesoporous Materials and Catalysis
  • Photonic Crystals and Applications
  • Iron oxide chemistry and applications

A selection of recent papers demonstrates the scientist's focus on geochemical processes and experimental methods. These papers include:

  • Assessing the sources of inorganic carbon in surface-, soil- and non-thermal groundwater in Iceland by δ13C and 14C, 2020, Geochimica et Cosmochimica Acta
  • Silica polymerization and nanocolloid nucleation and growth kinetics in aqueous solutions, 2024, Geochimica et Cosmochimica Acta
  • Silica polymerization experimental data, 2023, Zenodo (CERN European Organization for Nuclear Research)
  • Silica polymerization experimental data, 2023, Zenodo (CERN European Organization for Nuclear Research)

Frequent collaboration with other scientists is part of Stefán's research activities. Notable coauthors include:

  • Andri Stefánsson
  • Samuel Scott
  • Iwona Gałeczka
  • Ingvi Gunnarsson
  • Árný E. Sveinbjörnsdóttir

The scientist regularly publishes in established venues, primarily:

  • Geochimica et Cosmochimica Acta
  • Zenodo (CERN European Organization for Nuclear Research)

Best Publications

  • The chemistry of geothermal waters in Iceland. III. Chemical geothermometry in geothermal investigations

    Stefán Arnórsson;Einar Gunnlaugsson;Hördur Svavarsson

  • Amorphous silica solubility and the thermodynamic properties of H4SiO°4 in the range of 0° to 350°C at Psat

    Ingvi Gunnarsson;Stefán Arnórsson

  • Chemical weathering of basalt in Southwest Iceland; effects of runoff, age of rocks and vegetative/glacial cover

    Sigurdur Reynir Gislason;Stefan Arnorsson;Halldor Armannsson

  • The chemistry of geothermal waters in Iceland. I. Calculation of aqueous speciation from 0° to 370°C

    Stefán Arnórsson;Sven Sigurdsson;Hördur Svavarsson

  • The chemistry of geothermal waters in Iceland. II. Mineral equilibria and independent variables controlling water compositions

    Stefán Arnórsson;Einar Gunnlaugsson;Hördur Svavarsson

  • Processes controlling the distribution of boron and chlorine in natural waters in Iceland

    Stefán Arnórsson;Audur Andrésdóttir

  • Geothermal systems in Iceland: Structure and conceptual models—I. High-temperature areas

    Stefán Arnórsson

  • New gas geothermometers for geothermal exploration—calibration and application

    Stefán Arnórsson;Einar Gunnlaugsson

  • Chemical equilibria in icelandic geothermal systems—Implications for chemical geothermometry investigations

    S. Arnórsson

  • Fluid-Fluid Interactions in Geothermal Systems

    Stefán Arnórsson;Andri Stefánsson;Jón Örn Bjarnason

  • The use of mixing models and chemical geothermometers for estimating underground temperatures in geothermal systems

    Stefán Arnórsson

  • Application of the silica geothermometer in low temperature hydrothermal areas in Iceland

    Unknown

  • Sampling and analysis of geothermal fluids

    S. Arnórsson;J. Ö. Bjarnason;N. Giroud;I. Gunnarsson

  • Dissolution of primary basaltic minerals in natural waters: saturation state and kinetics

    Sigurdur R. Gislason;Stefán Arnórsson

  • Porosity evolution and mineral paragenesis during low-grade metamorphism of basaltic lavas at Teigarhorn, eastern Iceland

    Philip S. Neuhoff;Thrainn Fridriksson;Stefan Arnorsson;Dennis K. Bird

  • Dissolution of primary minerals in natural waters

    Andri Stefánsson;Sigurdur R Gı́slason;Stefán Arnórsson

  • Helium isotopes in Icelandic geothermal systems: I. 3He, gas chemistry, and 13C relations

    R.J Poreda;H Craig;S Arnórsson;J.A Welhan

  • Assessment of feldspar solubility constants in water in the range of 0 degrees to 350 degrees C at vapor saturation pressures

    Stefan Arnorsson;Andri Stefansson

  • Deposition of calcium carbonate minerals from geothermal waters; Theoretical considerations

    Stefán Arnórsson

  • The boron isotope systematics of Icelandic geothermal waters: 1. Meteoric water charged systems

    J.K. Aggarwal;M.R. Palmer;T.D. Bullen;S. Arnórsson

  • Feldspar saturation state in natural waters

    Andri Stefánsson;Stefán Arnórsson

Frequent Co-Authors

Andri Stefánsson
Andri Stefánsson University of Iceland
Dennis K. Bird
Dennis K. Bird Stanford University
Jan Heinemeier
Jan Heinemeier Aarhus University
Sigurdur R. Gislason
Sigurdur R. Gislason University of Iceland
Jaime D. Barnes
Jaime D. Barnes The University of Texas at Austin
Karl Grönvold
Karl Grönvold University of Iceland
David R. Hilton
David R. Hilton University of California, San Diego
Niels Oskarsson
Niels Oskarsson Nordic Volcanological Center
S. A. Halldorsson
S. A. Halldorsson University of Iceland

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