Sonja Geilert PhD

Vening Meineszgebouw A
Princetonlaan 8a
3584 CB Utrecht

Sonja Geilert PhD

Assistant Professor
Geochemistry
s.geilert@uu.nl

Publications

2024

Scholarly publications

Vosteen, P., Kossack, M., Vogt, C., Andersen, C. H., Geilert, S., Zabel, M., & Scholz, F. (2024). Iron redox shuttling and uptake by silicate minerals on the Namibian mud belt. Geochimica et Cosmochimica Acta, 386. https://doi.org/10.1016/j.gca.2024.10.013
Geilert, S., Frick, D. A., Abbott, A. N., & Löhr, S. C. (2024). Marine clay maturation induces systematic silicon isotope decrease in authigenic clays and pore fluids. Communications Earth and Environment, 5(1), Article 573. https://doi.org/10.1038/s43247-024-01746-4
Dale, A. W., Geilert, S., Diercks, I., Fuhr, M., Perner, M., Scholz, F., & Wallmann, K. (2024). Seafloor alkalinity enhancement as a carbon dioxide removal strategy in the Baltic Sea. Communications Earth and Environment, 5(1), Article 452. https://doi.org/10.1038/s43247-024-01569-3
Fuhr, M., Wallmann, K., Dale, A. W., Kalapurakkal, H. T., Schmidt, M., Sommer, S., Deusner, C., Spiegel, T., Kowalski, J., & Geilert, S. (2024). Alkaline mineral addition to anoxic to hypoxic Baltic Sea sediments as a potentially efficient CO2-removal technique. Frontiers in Climate, 6, Article 1338556. https://doi.org/10.3389/fclim.2024.1338556
https://dspace.library.uu.nl/bitstream/handle/1874/437999/fclim-06-1338556.pdf?sequence=1

2023

Scholarly publications

Riebesell, U., Basso, D., Geilert, S., Dale, A. W., & Kreuzburg, M. (2023). Mesocosm experiments in ocean alkalinity enhancement research. In A. Oschlies, A. Stevenson, L. T. Bach, K. Fennel, R. E. M. Rickaby, T. Satterfield, R. Webb, & J.-P. Gattuso (Eds.), Guide to Best Practices in Ocean Alkalinity Enhancement Research (Vol. 2). Copernicus Publications, State Planet. https://doi.org/10.5194/sp-2-oae2023-6-2023
https://dspace.library.uu.nl/bitstream/handle/1874/436401/sp-2-oae2023-6-2023.pdf?sequence=1
Eisaman, M., Geilert, S., Renforth, P., Bastianini, L., Campbell, J., Dale, A. W., Foteinis, S., Grasse, P., Hawrot, O., Löscher, C. R., Rau, G. H., & Ronning, J. (2023). Assessing the technical aspects of ocean-alkalinity-enhancement approaches. In A. Oschlies, A. Stevenson, L. T. Bach, K. Fennel, R. Rickaby, E. M. Satterfield, R. Webb, & J.-P. Gattuso (Eds.), Guide to Best Practices in Ocean Alkalinity Enhancement Research (Vol. 2). (State of the Planet). Copernicus Publications, State Planet. https://doi.org/10.5194/sp-2-oae2023-3-2023
https://dspace.library.uu.nl/bitstream/handle/1874/436400/sp-2-oae2023-3-2023.pdf?sequence=1
Fuhr, M., Wallmann, K., Dale, A. W., Diercks, I., Kalapurakkal, H. T., Schmidt, M., Sommer, S., Böhnke, S., Perner, M., & Geilert, S. (2023). Disentangling artificial and natural benthic weathering in organic rich Baltic Sea sediments. Frontiers in Climate, 5, Article 1245580. https://doi.org/10.3389/fclim.2023.1245580
https://dspace.library.uu.nl/bitstream/handle/1874/434657/fclim-05-1245580.pdf?sequence=1
Wallmann, K., Geilert, S., & Scholz, F. (2023). Chemical Alteration of Riverine Particles in Seawater and Marine Sediments: Effects on Seawater Composition and Atmospheric CO2. American Journal of Science, 323, 1-39. Article 87455. https://doi.org/10.2475/001c.87455
Geilert, S., Frick, D. A., Garbe-Schönberg, D., Scholz, F., Sommer, S., Grasse, P., Vogt, C., & Dale, A. W. (2023). Coastal El Niño triggers rapid marine silicate alteration on the seafloor. Nature Communications, 14(1), 1-8. Article 1676. https://doi.org/10.1038/s41467-023-37186-5

2022

Scholarly publications

Sarkar, S., Moser, M., Berndt, C., Doll, M., Böttner, C., Chi, W. C., Klaeschen, D., Galerne, C., Karstens, J., Geilert, S., Mortera-Gutierrez, C., & Hensen, C. (2022). Thermal State of the Guaymas Basin Derived From Gas Hydrate Bottom Simulating Reflections and Heat Flow Measurements. Journal of Geophysical Research: Solid Earth, 127(8), Article e2021JB023909. https://doi.org/10.1029/2021JB023909
Luo, M., Li, W., Geilert, S., Dale, A. W., Song, Z., & Chen, D. (2022). Active Silica Diagenesis in the Deepest Hadal Trench Sediments. Geophysical Research Letters, 49(14), Article e2022GL099365. https://doi.org/10.1029/2022GL099365
Fuhr, M., Geilert, S., Schmidt, M., Liebetrau, V., Vogt, C., Ledwig, B., & Wallmann, K. (2022). Kinetics of Olivine Weathering in Seawater: An Experimental Study. Frontiers in Climate, 4, Article 831587. https://doi.org/10.3389/fclim.2022.831587

2021

Scholarly publications

Grasse, P., Haynert, K., Doering, K., Geilert, S., Jones, J. L., Brzezinski, M. A., & Frank, M. (2021). Controls on the Silicon Isotope Composition of Diatoms in the Peruvian Upwelling. Frontiers in marine science, 8, Article 697400. https://doi.org/10.3389/fmars.2021.697400
Geilert, S., Albers, E., Frick, D. A., Hansen, C. T., & von Blanckenburg, F. (2021). Systematic changes in serpentine Si isotope signatures across the Mariana forearc – a new proxy for slab dehydration processes. Earth and Planetary Science Letters, 575, Article 117193. https://doi.org/10.1016/j.epsl.2021.117193
Lagostina, L., Frandsen, S., MacGregor, B. J., Glombitza, C., Deng, L., Fiskal, A., Li, J., Doll, M., Geilert, S., Schmidt, M., Scholz, F., Bernasconi, S. M., Jørgensen, B. B., Hensen, C., Teske, A., & Lever, M. A. (2021). Interactions between temperature and energy supply drive microbial communities in hydrothermal sediment. Communications Biology, 4(1), Article 1006. https://doi.org/10.1038/s42003-021-02507-1
Wang, W., Geilert, S., Wei, H. Z., & Jiang, S. Y. (2021). Competition of equilibrium and kinetic silicon isotope fractionation during silica precipitation from acidic to alkaline pH solutions in geothermal systems. Geochimica et Cosmochimica Acta, 306, 44-62. https://doi.org/10.1016/j.gca.2021.05.022
Dale, A. W., Paul, K. M., Clemens, D., Scholz, F., Schroller-Lomnitz, U., Wallmann, K., Geilert, S., Hensen, C., Plass, A., Liebetrau, V., Grasse, P., & Sommer, S. (2021). Recycling and Burial of Biogenic Silica in an Open Margin Oxygen Minimum Zone. Global Biogeochemical Cycles, 35(2), Article e2020GB006583. https://doi.org/10.1029/2020GB006583

2020

Scholarly publications

Geilert, S., Grasse, P., Doering, K., Wallmann, K., Ehlert, C., Scholz, F., Frank, M., Schmidt, M., & Hensen, C. (2020). Impact of ambient conditions on the Si isotope fractionation in marine pore fluids during early diagenesis. Biogeosciences, 17(7), 1745-1763. https://doi.org/10.5194/bg-17-1745-2020
Geilert, S., Grasse, P., Wallmann, K., Liebetrau, V., & Menzies, C. D. (2020). Serpentine alteration as source of high dissolved silicon and elevated δ30Si values to the marine Si cycle. Nature Communications, 11(1), Article 5123. https://doi.org/10.1038/s41467-020-18804-y
Grasse, P., Closset, I., Jones, J. L., Geilert, S., & Brzezinski, M. A. (2020). Controls on Dissolved Silicon Isotopes Along the U.S. GEOTRACES Eastern Pacific Zonal Transect (GP16). Global Biogeochemical Cycles, 34(9), Article e2020GB006538. https://doi.org/10.1029/2020GB006538

2019

Scholarly publications

Scholz, F., Schmidt, M., Hensen, C., Eroglu, S., Geilert, S., Gutjahr, M., & Liebetrau, V. (2019). Shelf-to-basin iron shuttle in the Guaymas Basin, Gulf of California. Geochimica et Cosmochimica Acta, 261, 76-92. https://doi.org/10.1016/j.gca.2019.07.006
Schmidt, C., Hensen, C., Wallmann, K., Liebetrau, V., Tatzel, M., Schurr, S. L., Kutterolf, S., Haffert, L., Geilert, S., Hübscher, C., Lebas, E., Heuser, A., Schmidt, M., Strauss, H., Vogl, J., & Hansteen, T. (2019). Origin of High Mg and SO4 Fluids in Sediments of the Terceira Rift, Azores-Indications for Caminite Dissolution in a Waning Hydrothermal System. Geochemistry, Geophysics, Geosystems, 20(12), 6078-6094. https://doi.org/10.1029/2019GC008525
Geilert, S., Vogl, J., Rosner, M., & Eichert, T. (2019). Boron isotope variability related to boron speciation (change during uptake and transport) in bell pepper plants and SI traceable n(11B)/n(10B) ratios for plant reference materials. Rapid Communications in Mass Spectrometry, 33(13), 1137-1147. https://doi.org/10.1002/rcm.8455

2018

Scholarly publications

Geilert, S., Hensen, C., Schmidt, M., Liebetrau, V., Scholz, F., Doll, M., Deng, L., Fiskal, A., Lever, M. A., Su, C. C., Schloemer, S., Sarkar, S., Thiel, V., & Berndt, C. (2018). On the formation of hydrothermal vents and cold seeps in the Guaymas Basin, Gulf of California. Biogeosciences, 15(18), 5715-5731. https://doi.org/10.5194/bg-15-5715-2018

2016

Scholarly publications

Berndt, C., Hensen, C., Mortera-Gutierrez, C., Sarkar, S., Geilert, S., Schmidt, M., Liebetrau, V., Kipfer, R., Scholz, F., Doll, M., Muff, S., Karstens, J., Planke, S., Petersen, S., Böttner, C., Chi, W. C., Moser, M., Behrendt, R., Fiskal, A., ... Lizarralde, D. (2016). Rifting under steam-How rift magmatism triggers methane venting from sedimentary basins. Geology, 44(9), 767-770. https://doi.org/10.1130/G38049.1
Ehlert, C., Doering, K., Wallmann, K., Scholz, F., Sommer, S., Grasse, P., Geilert, S., & Frank, M. (2016). Stable silicon isotope signatures of marine pore waters – Biogenic opal dissolution versus authigenic clay mineral formation. Geochimica et Cosmochimica Acta, 191, 102-117. https://doi.org/10.1016/j.gca.2016.07.022
Geilert, S., Vroon, P. Z., & van Bergen, M. J. (2016). Effect of diagenetic phase transformation on the silicon isotope composition of opaline sinter deposits of Geysir, Iceland. Chemical Geology, 433, 57-67. https://doi.org/10.1016/j.chemgeo.2016.04.008

2015

Scholarly publications

Geilert, S., Vroon, P. Z., Keller, N. S., Gudbrandsson, S., Stefánsson, A., & van Bergen, M. J. (2015). Silicon isotope fractionation during silica precipitation from hot-spring waters: Evidence from the Geysir geothermal field, Iceland. Geochimica et Cosmochimica Acta, 164, 403-427. https://doi.org/10.1016/j.gca.2015.05.043
https://dspace.library.uu.nl/bitstream/handle/1874/318243/04_main.pdf?sequence=1
Roerdink, D. L., van den Boorn, S. H. J. M., Geilert, S., Vroon, P. Z., & van Bergen, M. J. (2015). Experimental constraints on kinetic and equilibrium silicon isotope fractionation during the formation of non-biogenic chert deposits. Chemical Geology, 402, 40-51. https://doi.org/10.1016/j.chemgeo.2015.02.038
https://dspace.library.uu.nl/bitstream/handle/1874/315597/isotope.pdf?sequence=1

2014

Scholarly publications

Geilert, S., Vroon, P. Z., Roerdink, D. L., Van Cappellen, P., & van Bergen, M. J. (2014). Silicon isotope fractionation during abiotic silica precipitation at low temperatures: Inferences from flow-through experiments. Geochimica et Cosmochimica Acta, 142, 95-114. https://doi.org/10.1016/j.gca.2014.07.003
Geilert, S., Vroon, P. Z., & van Bergen, M. J. (2014). Silicon isotopes and trace elements in chert record early Archean basin evolution. Chemical Geology, 386, 133-142. https://doi.org/10.1016/j.chemgeo.2014.07.027

2013

Scholarly publications

Geilert, S. (2013). Silicon isotope fractionation during silica precipitation from aqueous solutions: Experimental and field evidence. [Doctoral thesis 1 (Research UU / Graduation UU), Utrecht University]. UU Department of Earth Sciences.
https://dspace.library.uu.nl/bitstream/handle/1874/286924/S.Geilert2013_ElectronicAppendix.xls?sequence=1

2012

Scholarly publications

Geilert, S., Freundt, A., Wörner, G., & Kutterolf, S. (2012). Geochemical differences between along-arc and across-arc volcanics in west-central Nicaragua. Journal of South American Earth Sciences, 35, 38-50. https://doi.org/10.1016/j.jsames.2011.11.004