Katherine Elizabeth Grant

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  • Title
    Staff Scientist
  • Email
    grant39@llnl.gov
  • Phone
    (925) 423-8159
  • Organization
    PLS-AEED-ATMOSPHERIC, EARTH, ENERGY

Research Interests

My research focuses on understanding both how and why organic carbon persists in the terrestrial environment on different timescales. I use various geochemical methods, such as stable and radiogenic carbon isotopes, to understand how fast organic carbon cycles through particular reservoirs and what controls the rate of this cycling. I am particularly interested in understanding if certain carbon compound classes are selectively preserved in the Earth’s critical zone and to what extent mineral-carbon interactions control these processes.

PhD, Geological Sciences: Isotope Geochemistry, Cornell University, Ithaca, New York

MS, Environmental Engineering, Southern Methodist University, Dallas, Texas

BS, Chemistry, University of Notre Dame, South Bend, Indiana

 

Selected publications

Grant, K. E., Dellinger, M., Dickson, A. J., Ogric, M., Horan, K., Petsch, S., and Hilton, R. G. (2025) Validating the rhenium proxy for rock organic carbon oxidation using weathering profiles, Chemical Geology 671. https://doi.org/10.1016/j.chemgeo.2024.122464

Ghazi, L., Grant, K. E., Chappaz, A., Danish, M., Peucker‐Ehrenbrink, B., and Pett‐Ridge, J. C. (2024) The Global Biogeochemical Cycle of Rhenium, Global Biogeochemical Cycles38. e2024GB008254. https://doi.org/10.1029/ 2024GB008254

Sullivan, D. L., Brennecka, G. A., Grant, K. E., and Anbar, A. D. (2024) Rhenium Isotope Reconnaissance of Uranium Ore Concentrates, Earth and Planetary Science Letters644. https://doi.org/10.1016/j.epsl.2024.118898

Grant, K. E., Repasch, M. N., Finstad, K. M., Kerr, J. D., Marple, M., Larson, C. J., Broek, T. A. B., Pett-Ridge, J., and McFarlane, K. J. (2024) Diverse organic carbon dynamics captured by radiocarbon analysis of distinct compound classes in a grassland soil, Biogeosciences 21, 4395-441. https://doi.org/10.5194/bg-21-4395-2024

Finstad, K., Nuccio, E., Grant, K., Broek, T., Pett-Ridge, J., and McFarlane, K.; (2024) Radiocarbon analysis of soil microbial biomass via direct chloroform extraction, 10.31223/x5h952.

Grant, K.E., Hilton, R.G., Galy V.V. (2023) Global patterns of radiocarbon depletion in deep soil linked to the presence of rock-derived organic carbon. Geochemical Perspective Letters, Vol. 25 Pages 36-40

Ogrič, M., Dellinger, M., Grant, K.E., Galy, V.V., Gu, X., Susan L. Brantley, S.L., Hilton. R.G. (2023) Low rates of rock organic carbon oxidation and anthropogenic cycling of rhenium in a slowly denuding landscape. Earth Surf. Process. Landforms. 1–17. DOI: 10.1002/esp.5543

 Grant, K.E., Galy, V.V., Haghipour, N., Eglinton, T.I., Derry, L.A. (2022) Persistence of old soil carbon under changing climate: the role of mineral-carbon interactions. Chemical Geology 587, 120629. https://doi.org/10.1016/j.chemgeo.2021.120629

 Inagaki, T.M., Possinger, A.R., Grant, K.E., Schweizer, S.A., Mueller, C.W., Derry, L.A., Lehmann, J. and Kögel-Knabner, I. (2020) Subsoil organo-mineral associations under contrasting climate conditions. Geochimica et Cosmochimica Acta. 270, 244-263

Grant, K.E., Galy, V.V., Chadwick, O.A., Derry, L.A. (2019) Thermal oxidation of carbon in organic matter rich volcanic soils: insights into SOC age differentiation and mineral stabilization. Biogeochemistry 144, 291–304

 

For a full list, see: Google Scholar | ResearchGate | ORCID