Articles | Volume 21, issue 11
https://doi.org/10.5194/cp-21-2133-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-2133-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Review article
| 
12 Nov 2025
Review article |
| 12 Nov 2025
| 12 Nov 2025
Phanerozoic paleoenvironmental and paleoclimatic evolution in Svalbard
Aleksandra Smyrak-Sikora
CORRESPONDING AUTHOR
Department of Geosciences, Norwegian University of Science and Technology (NTNU), Trondheim 7031, Norway
Department of Arctic Geology, The University Centre in Svalbard (UNIS), Longyearbyen 9171, Norway
Peter Betlem
Norwegian Geotechnical Institute (NGI), Oslo 0806, Norway
Victoria S. Engelschiøn
Natural History Museum, University of Oslo, Oslo 0562, Norway
William J. Foster
Department of Earth System Science, University of Hamburg, 20146 Hamburg, Germany
Sten-Andreas Grundvåg
Department of Geosciences, The Arctic University of Norway, Tromsø 9019, Norway
Mads E. Jelby
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
Morgan T. Jones
Department of Ecology, Environment and Geoscience (EMG), Umeå University, Umeå, Sweden
Department of Geosciences, University of Oslo, Oslo 0315, Norway
Grace E. Shephard
Centre for Planetary Habitability (PHAB), University of Oslo, Oslo 0315, Norway
Research School of Earth Sciences, Australian National University, Acton, Canberra, Australia
Kasia K. Śliwińska
Department of Geo-energy and Storage, The Geological Survey of Denmark and Greenland (GEUS), Copenhagen 1350, Denmark
Madeleine L. Vickers
Department of Ecology, Environment and Geoscience (EMG), Umeå University, Umeå, Sweden
Valentin Zuchuat
Mineral Resources, CSIRO, Australia
Geological Institute, RWTH-Aachen University, 52062 Aachen, Germany
Lars Eivind Augland
Department of Geosciences, University of Oslo, Oslo 0315, Norway
Jan Inge Faleide
Department of Geosciences, University of Oslo, Oslo 0315, Norway
Jennifer M. Galloway
Geological Survey of Canada (GSC)/Commission géologique du Canada, Calgary, AB, Canada
William Helland-Hansen
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
Maria A. Jensen
Department of Arctic Geology, The University Centre in Svalbard (UNIS), Longyearbyen 9171, Norway
Erik P. Johannessen
EP Skolithos, Sisikveien 36, 4022 Stavanger, Norway
Maayke Koevoets
Geological Survey of the Netherlands (TNO), Utrecht 3584 CB, the Netherlands
Denise Kulhanek
Institute of Geosciences, Kiel University, 24118 Kiel, Germany
Gareth S. Lord
Equinor, Bergen, Norway
Tereza Mosociova
Department of Arctic Geology, The University Centre in Svalbard (UNIS), Longyearbyen 9171, Norway
Department of Geosciences, University of Oslo, Oslo 0315, Norway
Snorre Olaussen
Department of Arctic Geology, The University Centre in Svalbard (UNIS), Longyearbyen 9171, Norway
Sverre Planke
Department of Geosciences, University of Oslo, Oslo 0315, Norway
Volcanic Basin Energy Petroleum Research AS (VBER), Oslo
Gregory D. Price
School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, Devon, PL4 8AA, United Kingdom
Lars Stemmerik
Department of Geo-energy and Storage, The Geological Survey of Denmark and Greenland (GEUS), Copenhagen 1350, Denmark
Kim Senger
Department of Arctic Geology, The University Centre in Svalbard (UNIS), Longyearbyen 9171, Norway
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Kim Senger, Denise Kulhanek, Morgan T. Jones, Aleksandra Smyrak-Sikora, Sverre Planke, Valentin Zuchuat, William J. Foster, Sten-Andreas Grundvåg, Henning Lorenz, Micha Ruhl, Kasia K. Sliwinska, Madeleine L. Vickers, and Weimu Xu
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Laura Kellner, Karen Dybkjær, Stefan Piasecki, Julie Fredborg, Francien Peterse, Erik S. Rasmussen, Manuel Vieira, Lígia Castro, and Kasia K. Śliwińska
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We analysed Miocene dinocyst taxa and organic particle assemblages along a distal–proximal transect in the North Sea Basin. Based on distal and shallow marine successions, we reconstruct depositional changes across the Miocene Climatic Optimum (MCO; ~16.9–14.7 Ma) and use dinocysts as palaeoclimate proxies. Additionally, we provide five GDGT-derived sea surface temperature data points that support our dinocyst-based climate interpretation.
Peter K. Bijl, Kasia K. Śliwińska, Bella Duncan, Arnaud Huguet, Sebastian Naeher, Ronnakrit Rattanasriampaipong, Claudia Sosa-Montes de Oca, Alexandra Auderset, Melissa A. Berke, Bum Soo Kim, Nina Davtian, Tom Dunkley Jones, Desmond D. Eefting, Felix J. Elling, Pierrick Fenies, Gordon N. Inglis, Lauren O'Connor, Richard D. Pancost, Francien Peterse, Addison Rice, Appy Sluijs, Devika Varma, Wenjie Xiao, and Yi Ge Zhang
Biogeosciences, 22, 6465–6508, https://doi.org/10.5194/bg-22-6465-2025, https://doi.org/10.5194/bg-22-6465-2025, 2025
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Many academic laboratories worldwide process environmental samples for analysis of membrane lipid molecules of archaea, for the reconstruction of past environmental conditions. However, the sample workup scheme involves many steps, each of which has a risk of contamination or bias, affecting the results. This paper reviews steps involved in sampling, extraction and analysis of lipids, interpretation and archiving of the data. This ensures reproducible, reusable, comparable and consistent data.
Rafael Kenji Horota, Christian Haug Eide, Kim Senger, Marius Opsanger Jonassen, and Marie Annette Vander Kloet
EGUsphere, https://doi.org/10.5194/egusphere-2025-2248, https://doi.org/10.5194/egusphere-2025-2248, 2025
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We explored how virtual tools can help students prepare for and reflect on outdoor learning in the Arctic. Using surveys from university courses in Svalbard, we found that digital field visits helped students feel more confident, better understand the landscape, and learn more effectively. These tools do not replace real fieldwork but make it more accessible and inclusive. Our research shows how technology can support hands-on learning in remote environments.
Peter Betlem, Nil Rodes, Sara Mollie Cohen, and Marie A. Vander Kloet
Geosci. Commun., 8, 51–65, https://doi.org/10.5194/gc-8-51-2025, https://doi.org/10.5194/gc-8-51-2025, 2025
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Together with our students, we co-created two open geoscientific course modules using the Jupyter Book framework. Students were happy with the framework's accessibility, inclusivity, interactivity, and multimedia content and eagerly contributed to the educational materials through the GitHub backend when given the opportunity. Our efforts are an important step in the development of geoscientific open educational content co-created by technical experts, social scientists, and students alike.
Bella J. Duncan, Robert McKay, Richard Levy, Joseph G. Prebble, Timothy Naish, Osamu Seki, Christoph Kraus, Heiko Moossen, G. Todd Ventura, Denise K. Kulhanek, and James Bendle
EGUsphere, https://doi.org/10.5194/egusphere-2024-4021, https://doi.org/10.5194/egusphere-2024-4021, 2025
This preprint is open for discussion and under review for Climate of the Past (CP).
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We use plant wax compound specific stable isotopes to investigate how ancient Antarctic vegetation adapted to glacial conditions 23 million years ago. We find plants became less water efficient to prioritise photosynthesis during short, harsh growing seasons. Ecosystem changes also included enhanced aridity, and a shift to a stunted, low elevation vegetation. This shows the adaptability of ancient Antarctic vegetation under atmospheric CO2 conditions comparable to modern.
Kim Senger, Grace Shephard, Fenna Ammerlaan, Owen Anfinson, Pascal Audet, Bernard Coakley, Victoria Ershova, Jan Inge Faleide, Sten-Andreas Grundvåg, Rafael Kenji Horota, Karthik Iyer, Julian Janocha, Morgan Jones, Alexander Minakov, Margaret Odlum, Anna Sartell, Andrew Schaeffer, Daniel Stockli, Marie Annette Vander Kloet, and Carmen Gaina
Geosci. Commun., 7, 267–295, https://doi.org/10.5194/gc-7-267-2024, https://doi.org/10.5194/gc-7-267-2024, 2024
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The article describes a course that we have developed at the University Centre in Svalbard that covers many aspects of Arctic geology. The students experience this course through a wide range of lecturers, focussing both on the small and larger scales and covering many geoscientific disciplines.
Juan F. Diaz, Noritoshi Suzuki, Jennifer M. Galloway, and Manuel Bringué
J. Micropalaeontol., 43, 69–80, https://doi.org/10.5194/jm-43-69-2024, https://doi.org/10.5194/jm-43-69-2024, 2024
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In this study, we describe one new genus and three new species of radiolarians from Upper Cretaceous strata of the northern mainland coast of Arctic Canada. This is one of the few Cretaceous radiolarian assemblages recovered from the interior of North America and high northern latitudes and serves as a foundation for future Cretaceous radiolarian research in Arctic regions. Taxonomic descriptions were based on external and internal features observed using a scanning electron microscope.
Peter Betlem, Thomas Birchall, Gareth Lord, Simon Oldfield, Lise Nakken, Kei Ogata, and Kim Senger
Earth Syst. Sci. Data, 16, 985–1006, https://doi.org/10.5194/essd-16-985-2024, https://doi.org/10.5194/essd-16-985-2024, 2024
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We present the digitalisation (i.e. textured outcrop and terrain models) of the Agardhfjellet Fm. cliffs exposed in Konusdalen West, Svalbard, which forms the seal of a carbon capture site in Longyearbyen, where several boreholes cover the exposed interval. Outcrop data feature centimetre-scale accuracies and a maximum resolution of 8 mm and have been correlated with the boreholes through structural–stratigraphic annotations that form the basis of various numerical modelling scenarios.
Madeleine L. Vickers, Morgan T. Jones, Jack Longman, David Evans, Clemens V. Ullmann, Ella Wulfsberg Stokke, Martin Vickers, Joost Frieling, Dustin T. Harper, Vincent J. Clementi, and IODP Expedition 396 Scientists
Clim. Past, 20, 1–23, https://doi.org/10.5194/cp-20-1-2024, https://doi.org/10.5194/cp-20-1-2024, 2024
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The discovery of cold-water glendonite pseudomorphs in sediments deposited during the hottest part of the Cenozoic poses an apparent climate paradox. This study examines their occurrence, association with volcanic sediments, and speculates on the timing and extent of cooling, fitting this with current understanding of global climate during this period. We propose that volcanic activity was key to both physical and chemical conditions that enabled the formation of glendonites in these sediments.
Kim Senger, Denise Kulhanek, Morgan T. Jones, Aleksandra Smyrak-Sikora, Sverre Planke, Valentin Zuchuat, William J. Foster, Sten-Andreas Grundvåg, Henning Lorenz, Micha Ruhl, Kasia K. Sliwinska, Madeleine L. Vickers, and Weimu Xu
Sci. Dril., 32, 113–135, https://doi.org/10.5194/sd-32-113-2023, https://doi.org/10.5194/sd-32-113-2023, 2023
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Geologists can decipher the past climates and thus better understand how future climate change may affect the Earth's complex systems. In this paper, we report on a workshop held in Longyearbyen, Svalbard, to better understand how rocks in Svalbard (an Arctic archipelago) can be used to quantify major climatic shifts recorded in the past.
Stephen P. Hesselbo, Aisha Al-Suwaidi, Sarah J. Baker, Giorgia Ballabio, Claire M. Belcher, Andrew Bond, Ian Boomer, Remco Bos, Christian J. Bjerrum, Kara Bogus, Richard Boyle, James V. Browning, Alan R. Butcher, Daniel J. Condon, Philip Copestake, Stuart Daines, Christopher Dalby, Magret Damaschke, Susana E. Damborenea, Jean-Francois Deconinck, Alexander J. Dickson, Isabel M. Fendley, Calum P. Fox, Angela Fraguas, Joost Frieling, Thomas A. Gibson, Tianchen He, Kat Hickey, Linda A. Hinnov, Teuntje P. Hollaar, Chunju Huang, Alexander J. L. Hudson, Hugh C. Jenkyns, Erdem Idiz, Mengjie Jiang, Wout Krijgsman, Christoph Korte, Melanie J. Leng, Timothy M. Lenton, Katharina Leu, Crispin T. S. Little, Conall MacNiocaill, Miguel O. Manceñido, Tamsin A. Mather, Emanuela Mattioli, Kenneth G. Miller, Robert J. Newton, Kevin N. Page, József Pálfy, Gregory Pieńkowski, Richard J. Porter, Simon W. Poulton, Alberto C. Riccardi, James B. Riding, Ailsa Roper, Micha Ruhl, Ricardo L. Silva, Marisa S. Storm, Guillaume Suan, Dominika Szűcs, Nicolas Thibault, Alfred Uchman, James N. Stanley, Clemens V. Ullmann, Bas van de Schootbrugge, Madeleine L. Vickers, Sonja Wadas, Jessica H. Whiteside, Paul B. Wignall, Thomas Wonik, Weimu Xu, Christian Zeeden, and Ke Zhao
Sci. Dril., 32, 1–25, https://doi.org/10.5194/sd-32-1-2023, https://doi.org/10.5194/sd-32-1-2023, 2023
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We present initial results from a 650 m long core of Late Triasssic to Early Jurassic (190–202 Myr) sedimentary strata from the Cheshire Basin, UK, which is shown to be an exceptional record of Earth evolution for the time of break-up of the supercontinent Pangaea. Further work will determine periodic changes in depositional environments caused by solar system dynamics and used to reconstruct orbital history.
Eva P. S. Eibl, Kristin S. Vogfjörd, Benedikt G. Ófeigsson, Matthew J. Roberts, Christopher J. Bean, Morgan T. Jones, Bergur H. Bergsson, Sebastian Heimann, and Thoralf Dietrich
Earth Surf. Dynam., 11, 933–959, https://doi.org/10.5194/esurf-11-933-2023, https://doi.org/10.5194/esurf-11-933-2023, 2023
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Floods draining beneath an ice cap are hazardous events that generate six different short- or long-lasting types of seismic signals. We use these signals to see the collapse of the ice once the water has left the lake, the propagation of the flood front to the terminus, hydrothermal explosions and boiling in the bedrock beneath the drained lake, and increased water flow at rapids in the glacial river. We can thus track the flood and assess the associated hazards better in future flooding events.
Roy Helge Gabrielsen, Panagiotis Athanasios Giannenas, Dimitrios Sokoutis, Ernst Willingshofer, Muhammad Hassaan, and Jan Inge Faleide
Solid Earth, 14, 961–983, https://doi.org/10.5194/se-14-961-2023, https://doi.org/10.5194/se-14-961-2023, 2023
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The Barents Shear Margin defines the border between the relatively shallow Barents Sea that is situated on a continental plate and the deep ocean. This margin's evolution history was probably influenced by plate tectonic reorganizations. From scaled experiments, we deduced several types of structures (faults, folds, and sedimentary basins) that help us to improve the understanding of the history of the opening of the North Atlantic.
Morgan T. Jones, Ella W. Stokke, Alan D. Rooney, Joost Frieling, Philip A. E. Pogge von Strandmann, David J. Wilson, Henrik H. Svensen, Sverre Planke, Thierry Adatte, Nicolas Thibault, Madeleine L. Vickers, Tamsin A. Mather, Christian Tegner, Valentin Zuchuat, and Bo P. Schultz
Clim. Past, 19, 1623–1652, https://doi.org/10.5194/cp-19-1623-2023, https://doi.org/10.5194/cp-19-1623-2023, 2023
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There are periods in Earth’s history when huge volumes of magma are erupted at the Earth’s surface. The gases released from volcanic eruptions and from sediments heated by the magma are believed to have caused severe climate changes in the geological past. We use a variety of volcanic and climatic tracers to assess how the North Atlantic Igneous Province (56–54 Ma) affected the oceans and atmosphere during a period of extreme global warming.
Kasia K. Śliwińska, Helen K. Coxall, David K. Hutchinson, Diederik Liebrand, Stefan Schouten, and Agatha M. de Boer
Clim. Past, 19, 123–140, https://doi.org/10.5194/cp-19-123-2023, https://doi.org/10.5194/cp-19-123-2023, 2023
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We provide a sea surface temperature record from the Labrador Sea (ODP Site 647) based on organic geochemical proxies across the late Eocene and early Oligocene. Our study reveals heterogenic cooling of the Atlantic. The cooling of the North Atlantic is difficult to reconcile with the active Atlantic Meridional Overturning Circulation (AMOC). We discuss possible explanations like uncertainty in the data, paleogeography and atmospheric CO2 boundary conditions, model weaknesses, and AMOC activity.
Thomas Goelles, Tobias Hammer, Stefan Muckenhuber, Birgit Schlager, Jakob Abermann, Christian Bauer, Víctor J. Expósito Jiménez, Wolfgang Schöner, Markus Schratter, Benjamin Schrei, and Kim Senger
Geosci. Instrum. Method. Data Syst., 11, 247–261, https://doi.org/10.5194/gi-11-247-2022, https://doi.org/10.5194/gi-11-247-2022, 2022
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We propose a newly developed modular MObile LIdar SENsor System (MOLISENS) to enable new applications for small industrial light detection and ranging (lidar) sensors. MOLISENS supports both monitoring of dynamic processes and mobile mapping applications. The mobile mapping application of MOLISENS has been tested under various conditions, and results are shown from two surveys in the Lurgrotte cave system in Austria and a glacier cave in Longyearbreen on Svalbard.
Molly O. Patterson, Richard H. Levy, Denise K. Kulhanek, Tina van de Flierdt, Huw Horgan, Gavin B. Dunbar, Timothy R. Naish, Jeanine Ash, Alex Pyne, Darcy Mandeno, Paul Winberry, David M. Harwood, Fabio Florindo, Francisco J. Jimenez-Espejo, Andreas Läufer, Kyu-Cheul Yoo, Osamu Seki, Paolo Stocchi, Johann P. Klages, Jae Il Lee, Florence Colleoni, Yusuke Suganuma, Edward Gasson, Christian Ohneiser, José-Abel Flores, David Try, Rachel Kirkman, Daleen Koch, and the SWAIS 2C Science Team
Sci. Dril., 30, 101–112, https://doi.org/10.5194/sd-30-101-2022, https://doi.org/10.5194/sd-30-101-2022, 2022
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How much of the West Antarctic Ice Sheet will melt and how quickly it will happen when average global temperatures exceed 2 °C is currently unknown. Given the far-reaching and international consequences of Antarctica’s future contribution to global sea level rise, the SWAIS 2C Project was developed in order to better forecast the size and timing of future changes.
Ella W. Stokke, Morgan T. Jones, Lars Riber, Haflidi Haflidason, Ivar Midtkandal, Bo Pagh Schultz, and Henrik H. Svensen
Clim. Past, 17, 1989–2013, https://doi.org/10.5194/cp-17-1989-2021, https://doi.org/10.5194/cp-17-1989-2021, 2021
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In this paper, we present new sedimentological, geochemical, and mineralogical data exploring the environmental response to climatic and volcanic impact during the Paleocene–Eocene Thermal Maximum (~55.9 Ma; PETM). Our data suggest a rise in continental weathering and a shift to anoxic–sulfidic conditions. This indicates a rapid environmental response to changes in the carbon cycle and temperatures and highlights the important role of shelf areas as carbon sinks driving the PETM recovery.
Kim Senger, Peter Betlem, Sten-Andreas Grundvåg, Rafael Kenji Horota, Simon John Buckley, Aleksandra Smyrak-Sikora, Malte Michel Jochmann, Thomas Birchall, Julian Janocha, Kei Ogata, Lilith Kuckero, Rakul Maria Johannessen, Isabelle Lecomte, Sara Mollie Cohen, and Snorre Olaussen
Geosci. Commun., 4, 399–420, https://doi.org/10.5194/gc-4-399-2021, https://doi.org/10.5194/gc-4-399-2021, 2021
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At UNIS, located at 78° N in Longyearbyen in Arctic Norway, we use digital outcrop models (DOMs) actively in a new course (
AG222 Integrated Geological Methods: From Outcrop To Geomodel) to solve authentic geoscientific challenges. DOMs are shared through the open-access Svalbox geoscientific portal, along with 360° imagery, subsurface data and published geoscientific data from Svalbard. Here we share experiences from the AG222 course and Svalbox, both before and during the Covid-19 pandemic.
Thomas Birchall, Malte Jochmann, Peter Betlem, Kim Senger, Andrew Hodson, and Snorre Olaussen
The Cryosphere Discuss., https://doi.org/10.5194/tc-2021-226, https://doi.org/10.5194/tc-2021-226, 2021
Preprint withdrawn
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Svalbard has over a century of drilling history, though this historical data is largely overlooked nowadays. After inspecting this data, stored in local archives, we noticed the surprisingly common phenomenon of gas trapped below the permafrost. Methane is a potent greenhouse gas, and the Arctic is warming at unprecedented rates. The permafrost is the last barrier preventing this gas from escaping into the atmosphere and if it thaws it risks a feedback effect to the already warming climate.
David K. Hutchinson, Helen K. Coxall, Daniel J. Lunt, Margret Steinthorsdottir, Agatha M. de Boer, Michiel Baatsen, Anna von der Heydt, Matthew Huber, Alan T. Kennedy-Asser, Lutz Kunzmann, Jean-Baptiste Ladant, Caroline H. Lear, Karolin Moraweck, Paul N. Pearson, Emanuela Piga, Matthew J. Pound, Ulrich Salzmann, Howie D. Scher, Willem P. Sijp, Kasia K. Śliwińska, Paul A. Wilson, and Zhongshi Zhang
Clim. Past, 17, 269–315, https://doi.org/10.5194/cp-17-269-2021, https://doi.org/10.5194/cp-17-269-2021, 2021
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The Eocene–Oligocene transition was a major climate cooling event from a largely ice-free world to the first major glaciation of Antarctica, approximately 34 million years ago. This paper reviews observed changes in temperature, CO2 and ice sheets from marine and land-based records at this time. We present a new model–data comparison of this transition and find that CO2-forced cooling provides the best explanation of the observed global temperature changes.
Mikkel Toft Hornum, Andrew Jonathan Hodson, Søren Jessen, Victor Bense, and Kim Senger
The Cryosphere, 14, 4627–4651, https://doi.org/10.5194/tc-14-4627-2020, https://doi.org/10.5194/tc-14-4627-2020, 2020
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In Arctic fjord valleys, considerable amounts of methane may be stored below the permafrost and escape directly to the atmosphere through springs. A new conceptual model of how such springs form and persist is presented and confirmed by numerical modelling experiments: in uplifted Arctic valleys, freezing pressure induced at the permafrost base can drive the flow of groundwater to the surface through vents in frozen ground. This deserves attention as an emission pathway for greenhouse gasses.
Cited articles
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Abdelmalak, M. M., Gac, S., Faleide, J. I., Shephard, G., Tsikalas, F., Polteau, S., Zastrozhnov, D., and Torsvik, T. H.: Quantification and restoration of the pre-drift extension across the NE Atlantic conjugate margins during the mid-Permian-early Cenozoic multi-rifting phases, Tectonics, 42, e2022TC007386, https://doi.org/10.1029/2022TC007386, 2023.
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Short summary
In this review article we present Svalbard’s unique geological archive, revealing its climate history over the last 540 million years. We uncover how this Arctic region recorded key global events, including the End-Permian Mass Extinction, and climate crises like the Paleocene–Eocene Thermal Maximum. The overall climate trend recorded in sedimentary successions in Svalbard is discussed in the context of global climate fluctuations and continuous drift of Svalbard from near equatorial to Arctic latitudes.
In this review article we present Svalbard’s unique geological archive, revealing its climate...
