DOI: 10.5281/zenodo.15405160
title: Dataset and Interactive Plot for Smyrak-Sikora et al., 2025; Phanerozoic paleoenvironmental and paleoclimatic evolution in Svalbard.

description: This upload contains the dataset (xlsx-file) and an interactive Plotly-based plot (html-file) corresponding to Figure 4 of the article Smyrak-Sikora et al., 2025. The visualization is provided as supplementary material to support dynamic exploration of the data presented in the publication.

Smyrak-Sikora, A., Betlem, P., Engelschiøn, V. S., Foster, W. J., Grundvåg, S.-A., Jelby, M. E., Jones, M. T., Shephard, G. E., Śliwińska, K. K., Vickers, M. L., Zuchuat, V., Augland, L. E., Faleide, J. I., Galloway, J. M., Helland-Hansen, W., Jensen, M. A., Johannessen, E. P., Koevoets, M., Kulhanek, D., Lord, G. S., Mosociova, T., Olaussen, S., Planke, S., Price, G. D., Stemmerik, L., and Senger, K.: Phanerozoic paleoenvironmental and paleoclimatic evolution in Svalbard, EGUsphere, 2025.

Please note: Users of this dataset are kindly requested to cite the original source publications when referencing or reusing the data. This ensures proper credit is given to the original authors and supports responsible data use in scientific research.

All data have been curated and formatted to facilitate clarity, reproducibility, and meaningful interaction through the included plot.

The dataset includes values compiled from the following scientific publications:

Bond, D.P.G., Wignall, P.B., Joachimski, M.M., Sun, Y., Savov, I., Grasby, S.E., Beauchamp, B., and Blomeier, D.P.G.: An abrupt extinction in the Middle Permian (Capitanian) of the Boreal Realm (Spitsbergen) and its link to anoxia and acidification, GSA Bulletin, 127 (9-10), 1411-1421, http://dx.doi.org/10.1130/b31216.1, 2015.

Buggisch, W., Blomeier, D. and Joachimski, M.M.: Facies, diagenesis and carbon isotopes of the Early Permian Gipshuken Formation (Svalbard). Zeitschrift der Deutschen Gesellschaft fur Geowissenschaften, 163(3): 309, 2012.

Cui, Y., Kump, L. R., Ridgwell, A. J., Charles, A. J., Junium, C. K., Diefendorf, A. F., Freeman, K. H., Urban, N. M.,and Harding, I. C.: Slow release of fossil carbon during the Palaeocene–Eocene Thermal Maximum. Nature Geoscience, 4(7), 481-485, 2011.

Doerner, M., Berner, U., Erdmann, M., and Barth, T.: Geochemical characterization of the depositional environment of Paleocene and Eocene sediments of the Tertiary Central Basin of Svalbard, Chemical Geology, 542, 119587, https://doi.org/10.1016/j.chemgeo.2020.119587, 2020.

Galfetti, T., Hochuli, P. A., Brayard, A., Bucher, H., Weissert, H., & Vigran, J. O.: Smithian-Spathian boundary event: Evidence for global climatic change in the wake of the end-Permian biotic crisis. Geology, 35(4), 291-294, https://doi.org/10.1130/G23117A.1, 2007.

Grasby, S.E., Beauchamp, B., Bond, D.P.G., Wignall, P., Talavera, C., Galloway, J.M., Piepjohn, K., Reinhardt, L. and Blomeier, D.: Progressive environmental deterioration in northwestern Pangea leading to the latest Permian extinction. GSA Bulletin, 127(9-10): 1331-1347, 10.1130/b31197.1, 2015.

Jelby, M. E., Śliwińska, K. K., Koevoets, M. J., Alsen, P., Vickers, M. L., Olaussen, S., and Stemmerik, L.: Arctic reappraisal of global carbon-cycle dynamics across the Jurassic–Cretaceous boundary and Valanginian Weissert Event, Palaeogeogr. Palaeoclimatol. Palaeoecol., 555, https://doi.org/10.1016/j.palaeo.2020.109847, 2020.

Koevoets, M. J., Abay, T. B., Hammer, Ø., and Olaussen, S.: High-resolution organic carbon–isotope stratigraphy of the Middle Jurassic–Lower Cretaceous Agardhfjellet Formation of central Spitsbergen, Svalbard, Palaeogeogr. Palaeoclimatol. Palaeoecol., 449, 266–274, https://doi.org/10.1016/j.palaeo.2016.02.029, 2016.

Midtkandal, I., Svensen, H.H., Planke, S., Corfu, F., Polteau, S., Torsvik, T.H., Faleide, J.I., Grundvåg, S.-A., Selnes, H., Kürschner, W. and Olaussen, S.: The Aptian (Early Cretaceous) oceanic anoxic event (OAE1a) in Svalbard, Barents Sea, and the absolute age of the Barremian-Aptian boundary. Palaeogeography, Palaeoclimatology, Palaeoecology, 463: 126-135, https://doi.org/10.1016/j.palaeo.2016.09.023, 2016. 

Mueller, S., Veld, H., Nagy, J., & Kürschner, W. M. (2014). Depositional history of the Upper Triassic Kapp Toscana Group on Svalbard, Norway, inferred from palynofacies analysis and organic geochemistry. Sedimentary Geology, 310, 16-29.

Vickers, M. L., Price, G. D., Jerrett, R. M., and Watkinson, M.: Stratigraphic and geochemical expression of Barremian–Aptian global climate change in Arctic Svalbard, Geosphere, 12, 1594–1605, https://doi.org/10.1130/ges01344.1, 2016.

Vickers, M. L., Price, G. D., Jerrett, R. M., Sutton, P., Watkinson, M. P., and FitzPatrick, M.: The duration and magnitude of Cretaceous cool events: Evidence from the northern high latitudes, GSA Bull., 131, 1979–1994, https://doi.org/10.1130/b35074.1, 2019.

Wesenlund, F., Grundvåg, S.-A., Engelschiøn, V.S., Thießen, O. and Pedersen, J.H.: Linking facies variations, organic carbon richness and bulk bitumen content–A case study of the organic-rich Middle Triassic shales from eastern Svalbard. Marine and Petroleum Geology, 132: 105168, 2021.

Zuchuat, V., Sleveland, A. R. N., Twitchett, R. J., Svensen, H. H., Turner, H., Augland, L. E., Jones, M. T., Hammer, Ø., Hauksson, B. T., Haflidason, H., Midtkandal, I., and Planke, S.: A new high-resolution stratigraphic and palaeoenvironmental record spanning the End-Permian Mass Extinction and its aftermath in central Spitsbergen, Svalbard, Palaeogeogr. Palaeoclimatol. Palaeoecol., 554, 109732, https://doi.org/10.1016/j.palaeo.2020.109732, 2020.