Peer-reviewed articles
17. Löw N, Halldórsson SA, Beier C, Bali E, Matthews S, Guðfinnsson GH, Marshall EW, Helgason J, Ranta E, Abersteiner A, Barnes JD, Caracciolo A. (2025) Magma storage and transport beneath the near-rift Fjallgarðar Volcanic Ridge, Northeast Iceland. Contributions to Mineralogy and Petrology 180:24 (link)Peer-reviewed articles
16. Pilicita M BF. Bali E, Guðfinnsson GH, Friðleifsson GÓ, Ranta E, Kristinsson SG (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 125 (link, preprint)
15. Marshall EW, Caracciolo A, Bali E, Halldórsson SA, Matthews S, Ranta E, Rasmussen MB, Gunnarsson Robin J, Guðfinnson GH, Maclennan J, Bosq C, Auclair D, Sigmarsson O, Merrill H, Gísladóttir B, Johnson S, Löw N, Stracke A, Genske F. (2024) The petrology and geochemistry of the 2021 Fagradalsfjall eruption, Iceland: an eruption sourced from multiple, compositionally diverse, near-Moho sills. AGU Advances 5 (link)
14. Ranta E, Halldórsson SA, Óladóttir BA, Pfeffer MA, Caracciolo A, Bali E, Guðfinnsson GH, Kahl M, Barsotti S (2024) Magmatic controls on volcanic sulfur emissions at the Iceland hotspot. Geochemistry, Geophysics, Geosystems 25:5 (link, preprint)
13. Caracciolo A, Bali E, Ranta E, Halldórsson SA, Guðfinnsson GH, Óskarsson BV (2024) Medieval and recent SO2 budgets in the Reykjanes Peninsula: implication for future hazard. Geochemical Perspectives Letters 30 (link)
12. Pfeffer MA, Arellano S, Barsotti S, Petersen GN, Barnie T, Ilyinskaya E, Hjörvar T, Bali E, Pedersen GBM, Guðmunsson GH, Vogfjörð K, Ranta E, Óladóttir BA, Edwards B, Moussallam Y, Stefánsson A, Scott SW, Smekens J, Varnam M, Titos M (2024) SO2 emission rates and incorporation into the air pollution dispersion forecast during the 2021 eruption of Fagradalsfjall, Iceland. Journal of Volcanology and Geothermal Research 449 (link)
11. Stow M, Prytulak J, Burton KW, Nowell GM, Marshall EW, Halldórsson SA, Matthews S, Rasmussen MB, Ranta E, Caracciolo A (2023) No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption. Geochemical Perspectives Letters 27 (link)
10. Ranta E, Halldórsson SA, Barry PH, Ono S, Gunnarsson Robin J, Kleine BI, Ricci A, Fiebig J, Sveinbjörnsdóttir ÁE, Stefánsson A (2023) Deep magma degassing and volatile fluxes through volcanic hydrothermal systems: Insights from the Askja and Kverkfjöll volcanoes, Iceland. Journal of Volcanology and Geothermal Research 436:107776 (link)
9. Halldórsson SA, Marshall EW, Caracciolo A, Matthews S, Bali E, Rasmussen MB, Ranta E, Gunnarsson Robin J, Gudfinnsson GH, Sigmarsson O, Maclennan J, Jackson MG, Whitehouse M, Jeon H, van der Meer Q, Mibei GK, Kalliokoski M, Repczynska MM, Rúnarsdóttir RH, Sigurðsson G, Pfeffer MA, Scott SW, Kjartansdóttir R, Kleine BI, Oppenheimer C, Aiuppa A, Ilyinskaya E, Bitetto M, Giudice G, Stefánsson A (2022) Rapid shifting of a deep magmatic source at Fagradalsfjall volcano, Iceland. Nature 609 (link)
8. Ranta E, Gunnarsson-Robin J, Halldórsson SA, Ono S, Izon G, Jackson MG, Reekie CDJ, Jenner FE, Guðfinnsson GH, Jónsson OP, Stefánsson A (2022) Ancient and recycled sulfur sampled by the Iceland mantle plume. Earth and Planetary Science Letters 584:117452 (link, preprint)
7. Halldórsson SA, Hilton DR, Marshall EW, Ranta E, Ingvason A, Chakraborty S, Gunnarsson Robin J, Rasmussen MB, Gibson SA, Ono S, Scarsi P, Abebe T, Hopp J, Barry PH, Castillo PR (2022) Evidence from gas-rich ultramafic xenoliths for Superplume-derived recycled volatiles in the East African sub-continental mantle. Chemical Geology 589:120682 (link)
6. Marshall EW, Ranta E, Halldórsson SA, Caracciolo A, Bali E, Jeon H, Whitehouse MJ, Barnes JD, Stefánsson A (2022) Boron isotope evidence for the presence of devolatilized and rehydrated subducted materials in the Icelandic mantle source. Earth and Planetary Science Letters 577:117229 (link, preprint)
5. Taracsák Z, Neave DA, Beaudry P, Gunnarsson-Robin J, Burgess R, Edmonds M, Halldórsson SA, Longpré M-A, Ono S, Ranta E, Stefánsson A, Turchyn AV, EIMF, Hartley ME (2021) Instrumental mass fractionation during sulfur isotope analysis by secondary ion mass spectrometry in natural and synthetic glasses. Chemical Geology 578 (link)
4. Byrne DJ, Broadley MW, Halldórsson SA, Ranta E, Ricci A, Tyne RL, Stefánsson A, Ballentine CJ, Barry PH (2021) The use of noble gas isotopes to trace subsurface boiling temperatures in Icelandic geothermal systems. Earth and Planetary Science Letters 560:116805 (link)
3. Ranta E, Barnes JD, Halldórsson SA, Jónasson K, Stefánsson A (2021) Chlorine isotope ratios record magmatic brine assimilation during rhyolite genesis. Geochemical Perspectives Letters 16 (link)
2. Ranta E, Stockmann GJ, Wagner T, Fusswinkel T, Sturkell E, Tollefsen E, Skelton A (2018) Fluid–rock reactions in the 1.3 Ga siderite carbonatite of the Grønnedal–Íka alkaline complex, Southwest Greenland. Contributions to Mineralogy and Petrology173:78 (link)
1. Stockmann GJ, Ranta E, Trampe E, Sturkell E, Seaman P (2018) Carbon mineral storage in seawater: Ikaite (CaCO3· 6H2O) columns in Greenland. Energy Procedia 146 (link)
Thesises
Ranta E. Stable isotopes of volatile elements as a window into the crust and mantle beneath Icelandic volcanoes (2022) PhD thesis, Institute of Earth Sciences, University of Iceland (link)Thesises
Ranta E. Fluid-rock reactions in the carbonatites of the Grønnedal-Íka alkaline complex, South Greenland (2017) MSc thesis, Department of Geosciences and Geography, University of Helsinki (link)
Ranta E. Study of opaque phases in carbonatites of the Grønnedal-Íka alkaline complex, Southwest Greenland (2015) BSc thesis, Stockholm University, Department of Geological Sciences (link)
Popular science
Matthews S, Ranta E (2022) A glimpse into the deepest parts of the Fagradalsfjall volcanic system. Research briefing in Nature (link)Popular science
Sturkell E, Stockmann GJ, Ranta E, Seaman P (2018) Sagan om Ikkafjorden - de vita vikingarna. Geologiskt Forum 100
Proceedings
Ranta E, Stefánsson A, Gunnarsson-Robin J, Kjartansdóttir R, Halldórsson SA (2021) Characterising Geothermal Fluids of the Askja and Kverkfjöll Volcanic Systems, Iceland. Proceedings World Geothermal Congress 2020+1 (extended abstract)Proceedings
Conference abstracts
2025Conference abstracts
Ranta E, Beier C, Halldórsson SA. Syn-eruptive magma plumbing dynamics of monogenetic lava shields in Iceland. Goldschmidt, Prague (July 2025).
Beier C, Abersteiner A, Ranta E, Halldórsson SA. The Crust Cracks Up: lateral magma transport in NE Iceland.
Ranta E, Fusswinkel T, Beier C, Bali E. Late-stage magmatic fluid compositions in mafic intrusions constrained by fluid inclusion analysis. GeoDays, Oulu, Finland (March 2024). Oral 2024
Tvauri A, Kalliomäki H, Law KA, Ranta E, Rämö T. Major and trace element composition of tourmaline in the Kaustinen Li pegmatites: implications for melt origin and evolution. European Mineralogical Concference (August 2024)
Caracciolo A, Bali E, Ranta E, Halldórsson SA, Guðfinnsson GH. Medieval eruptions in the Reykjanes Peninsula, Iceland: magma storage depths and SO2 emission potentials for future eruption hazard assessment. EGU General Assembly, Vienna, Austria (April 2024)
Beier C, Haase K, Ranta E, Devey C, Halldórsson SA, Abersteiner A. Structural control on plume-ridge interaction in northern Iceland. GeoDays, Turku, Finland (March 2024)
Ranta E, Halldórsson SA, Óladóttir BA, Pfeffer MA, Caracciolo A, Bali E, Guðfinnsson GH, Kahl M, Barsotti S. Magmatic sulfur systematics at the Iceland hotspot viewed through the lens of melt inclusions. GeoDays, Turku, Finland (March 2024). Oral
Ranta E, Beier C, Halldórsson SA. The making of monogenetic lava shields: a case study of the mid-Holocene Trölladyngja eruption, Iceland. Nordic Geological Winter Meeting, Gothenburg, Sweden (January 2024). Oral
2023
Löw N, Halldórsson SA, Beier C, Abersteiner A, Marshall EW, Bali E, Guðfinnsson GH, Matthews S, Helgason J, Ranta E, Curtice J, Kurz M, Barry P. There and back again: An Icelandic rift jump tale. Goldschmidt, Lyon, France (July 2023)
Ranta E, Halldórsson SA, Barry PH, Ono S, Gunnarsson Robin J, Kleine BI, Ricci A, Fiebig J, Sveinbjörnsdóttir ÁE, Stefánsson A. Deep magma degassing and volatile fluxes through volcanic hydrothermal systems in Iceland. Goldschmidt, Lyon, France (July 2023). Oral
Marshall EW, Caracciolo A, Matthews S, Ranta E, Gunnarsson Robin J, Sigmarsson O, Halldórsson SA, Bali E, Guðfinnsson GH, Rasmussen MB, Löw, N. Geochemical monitoring results of the 2021 and 2022 Fagradalsfjall eruptions. Goldschmidt, Lyon, France (July 2023)
Ranta E, Beier C, Halldórsson SA. The making of monogenetic lava shields: a case study of the mid-Holocene Trölladyngja eruption, Iceland. GeoDays, Helsinki, Finland (March 2023). Poster
2022
Ranta E, Halldórsson SA, Barnes JD, Jónasson K, Stefánsson A. Melt-brine interaction in silicic magma mushes. Goldschmidt, Honolulu, Hawai'i, USA/hybrid (July 2022). Invited talk
Sigmarsson O, Marshall EW, Bosq C, Auclair D, Rasmussen MB, Kleine BI, Ranta E, Matthews S, Halldórsson SA, Jackson MG, Guðfinnsson GH, Bali E, Stefánsson A, Guðmundsson MT. Basalt production controlled by mantle source fertility at Fagradalsfjall, Iceland. EGU General Assembly, Vienna, Austria (May 2022)
Stow M, Prytulak J, Burton K, Nowell G, Marshall EW, Rasmussen MB, Matthews S, Ranta E, Caracciolo A. Temporal Fe-Zn isotopic variations in the chemically heterogeneous Fagradalsfjall eruption, 2021. EGU General Assembly, Vienna, Austria (May 2022)
Marshall EW, Rasmussen MB, Halldórsson SA, Matthews S, Ranta E, Sigmarsson O, Gunnarsson Robin J, Barnes JD, Bali E, Caracciolo A, Guðfinnsson GH, Mibei G. An overview of the geochemistry and petrology of the mantle-sourced Fagradalsfjall eruption, Iceland. EGU General Assembly, Vienna, Austria (May 2022)
Halldórsson SA, Matthews S, Ranta E, Kleine BI, Barnes JD, Shimizu K, Wang J, Jenner FE, Jackson MG, Stefánsson A, Hallis L, Dixon JE. An ancient, primordial source of water in the Iceland plume source? Nordic Geological Winter Meeting 2022, Reykjavik, Iceland (May 2022)
Ranta E, Halldórsson SA, Nykänen V, Kaikkonen R, Gudfinnsson GH, Barry PH, O'Brien, H, Rasmussen MB, Gunnarsson Robin J, Marshall EW, Stef-ansson A, Bali E, Jackson MG, Grönvold K. Asymmetric distribution of enriched components in the Iceland mantle. Nordic Geological Winter Meeting 2022, Reykjavik, Iceland (May 2022). Oral
Matthews S, Shorttle O, Halldórsson SA, Jenner F, Ranta E, Maclennan J, Murton B, Rudge JF, Small length scale H2O heterogeneity in the Icelandic mantle. Nordic Geological Winter Meeting 2022, Reykjavik, Iceland (May 2022)
Halldórsson SA & 29 other authors. Rapid source shifting of a deep magmatic system revealed by the Fagradalsfjall eruption, Iceland. Nordic Geological Winter Meeting 2022, Reykjavik, Iceland (May 2022)
Matthews S, Shorttle O, Halldórsson SA, Ranta E, Maclennan J, Rudge JF, Murton B. Preservation of H2O heterogeneity in the Icelandic mantle. VMSG, virtual (January 2022)
2021
Bali E, Caracciolo A, Guðfinnsson GH, Marshall EW., Rasmussen, MB, Matthews S., Ranta E, Mibei G, Halldórsson SA. Melt Transport Directly from the Mantle During the Fagradalsfjall Eruption, Iceland. AGU Fall Meeting (December 2021, link)
Marshall EW, Rasmussen MB, Halldórsson SA, Matthews S, Ranta E, Sigmarsson O, Gunnarsson Robin J, Bali E, Caracciolo A, Guðfinnsson GH, Mibei, GK. Rapid geochemical evolution of the mantle-sourced Fagradalsfjall eruption, Iceland. AGU Fall Meeting (December 2021, link)
Ranta E, Stefánsson A, Gunnarsson-Robin J, Kjartansdóttir R, Halldórsson SA. Characterising Geothermal Fluids of the Askja and Kverkfjöll Volcanic Systems, Iceland. World Geothermal Congress 2020+1, Reykjavik, Iceland (October 2021). Oral
Ranta E, Barnes JD, Halldórsson SA, Jónasson K, Stefánsson A. Magmatic brine assimilation: a new process accompanying rhyolite genesis. Spring meeting of the geological society of Iceland, Reykjavik (March 2021). Oral
2020
Ranta E, Gunnarsson-Robin J, Halldórsson SA, Ono S, Izon G, Jackson MG, Reekie CDJ, Jenner FE, Guðfinnsson GH, Jónsson OP, Stefánsson A. Sulfur isotope point-of-view on lower and upper mantle reservoirs below Iceland. Autumn meeting of the geological society of Iceland, Reykjavik (November 2020). Oral
Marshall EW, Halldórsson SA, Ranta E., Caracciolo A, Bali E, Jeon H, Whitehouse M, Stefánsson A. The boron isotope systematics of Icelandic basalts and melt inclusions. Goldschmidt, virtual (June 2020)
Halldórsson SA, Ranta E, Gunnarsson-Robin J, Bali E, Caracciolo A, Ono S, Jeon H, Whitehouse, Hartley ME, Dhaliwal J.K. , Matthews S, Stefánsson A. New sulfur isotope data from Icelandic subglacial glasses and melt inclusions: constraints on sulfur sources and degassing. Goldschmidt, virtual (June 2020)
Ranta E, Stefánsson A, Gunnarsson-Robin J, Kjartansdóttir R, Halldórsson SA, Barry PH, Ono S. Geochemistry of the hydrothermal systems of the Askja and Kverkfjöll volcanoes, Iceland. Nordic Geological Winter Meeting 2020, Oslo, Norway (Jan 2020). Poster
2019
Marshall EW, Halldórsson SA., Ranta E., Whitehouse M, Stefánsson A. The boron isotope systematics of Icelandic basalts and their constraints on the Icelandic mantle source. AGU Fall Meeting, USA (December 2019). Poster
Ranta E, Halldórsson SA, Barnes JD, Marshall EW, Bali E, Guðfinnsson GH, Whitehouse M, Jeon H. Volatile charasteristics of an EM-type mantle component in Iceland. AGU Chapman Conference, Selfoss, Iceland (October 2019). Poster
Ranta E, Barnes JD, Halldórsson SA, Jónasson K. Origin of large chlorine isotope variability in Icelandic rhyolites. Goldschmidt, Barcelona Spain (August 2019). Oral
Stockmann G, Ranta E, Trampe E, Sturkell E, Seaman P. Natural carbon sequestration by ikaite in Ikka fjord, Greenland. Goldschmidt, Barcelona Spain (August 2019). Poster
Ranta E, Barnes JD, Halldórsson SA, Jónasson K. Chlorine isotope systematics in silicic rocks: Lessons from Iceland. Spring meeting of the geological society of Iceland, Reykjavik (March 2019). Oral
2018
Ranta E., Halldórsson, SA, Guðfinnsson GH, Bali E, Nykänen V., Grönvold K, Kaikkonen R. Origin of volatile-enriched basalts of the Kverkfjöll volcanic system, Iceland. Goldschmidt, Boston, USA. (Also presented at the International Carbon Conference, Reykjavik, Iceland). Poster
Ranta E, Stockmann G, Wagner T, Fusswinkel T, Sturkell E, Tollefsen E, Skelton A. Fluid-rock reactions in the carbonatites of the 1.3 Ga Grønnedal-Íka alkaline complex, Southwest Greenland. Nordic Geological Winter Meeting, Copenhagen, Denmark. Oral
Ranta E, Halldórsson SA, Guðfinnsson GH, Bali E, Nykänen V, Grönvold K, Kaikkonen R. Geochemical characteristics of an enriched Icelandic tholeiitic magma suite: the case of the Kverkfjöll volcanic system. Nordic Geological Winter Meeting, Copenhagen, Denmark. (Also presented at the Spring meeting of the geological society of Iceland, Reykjavik). Poster