1. Li, W., Coogan, L. A., Wang, K., Takahashi, Y., Shakouri, M., Hu, Y. and Liu, X.-M. (2024) Hydrothermal origin of heavy potassium isotope compositions in altered oceanic crust: Implications for tracing the elemental cycleEarth and Planetary Science Letters625, 118448.
  2. Yang, T., Liu, H., Li, Y., Xue, Y.-Y., Li, X., Wang, K., and Sun, W.-D. (2023) High-temperature inter-mineral potassium isotope fractionation in ultrapotassic and granitic rocks: Implications for the potassium isotopic compositions of arc magmas. Chemical Geology, 641, 121770.
  3. Liu, H., Yang, T., Xue, Y.-Y., Deng, J., Xiao, Y., Sun, H., Tong, F., Wang, K., Gao, Y., Lin, K.-Y., Zhang, F., Jin, X., and Sun, W.-D. (2023) Slab dehydration and potassium-lithium recycling in the forearc indicated by potassium and lithium isotope compositions of exhumed metabasites. Geochimica et Cosmochimica Acta, 360, 16-35.
  4. Koefoed, P., Barrat J.-A., Pravdivtseva, O., Alexander, C.M.O’D., Lodders, K., Ogliore, R., and Wang, K. (2023) The potassium isotopic composition of CI chondrites and the origin of isotopic variations among primitive planetary bodies. Geochimica et Cosmochimica Acta, 358, 49-60.
  5. Wang, K., and Ionov, D. (2023) Potassium isotope evidence for slab-derived fluids in the sub-arc mantleEarth and Planetary Science Letters619, 118315.
  6. Turner, S. J., Barickman, M. H., Rodriguez, J., Fike, D. A., Jones, C. M., Wang, K., Savov, I. P., Agostini, S., Krawczynski, M. J., and Parai, R. (2023) Boron isotopes in Central American volcanics indicate a key role for the subducting oceanic crust. Earth and Planetary Science Letters, 619, 118289.


  1. Li, W., Liu, X.-M., Wang, K., McManus, J., Haley, B. A., Takahashi, Y., Shakouri, M. and Hu, Y. (2022) Potassium isotope signatures in modern marine sediments: Insights into early diagenesisEarth and Planetary Science Letters599, 117849.
  2. Koefoed, P., Pravdivtseva, O., Ogliore, R., Jiang, Y., Lodders, K., Neuman, M. and Wang, K. (2022) The dynamic formation process of the CB chondrite Gujba. Geochimica et Cosmochimica, 332, 33-56.
  3. Li, W., Liu, X.-M., Wang, K., Takahashi, Y., Hu, Y. & Chadwick, O. A. (2022) Soil potassium isotope composition during four million years of ecosystem development in Hawai‘i. Geochimica et Cosmochimica, 332, 57-77.
  4. Neuman, M., Holzheid, A., Lodders, K., Fegley, B. Jr., Jolliff, B. L., Koefoed, P., Chen, H., and Wang, K. (2022) High temperature evaporation and isotopic fractionation of K and Cu. Geochimica et Cosmochimica Acta316, 1-20.
  5. Li, W., Liu, X.-M., Wang, K., Hu, Y.-F., Suzuki, A., and Yoshimura, T. (2022) Potassium incorporation and isotope fractionation in cultured scleractinian corals. Earth and Planetary Science Letters, 581, 117393.


  1. Tian Z., Magna T., Day J. M. D., Mezger K., Scherer E. E., Lodders K., Hin R. C., Koefoed P., Bloom H. and Wang K. (2021) Potassium isotope composition of Mars reveals a mechanism of planetary volatile retention. Proceedings National Academy of Sciences118, e2101155118.
  2. Kuhnel, W. W., Jacobsen, S. B.,  Li, Y., Ku, Y., Petaev, M.I., Huang, S., Wu, Z., and Wang, K. (2021) High-temperature inter-mineral potassium isotope fractionation: Implications for K-Ca-Ar chronology. ACS Earth and Space Chemistry, 5, 2740-2754.
  3. Wang, K., Li, W., Li, S., Tian, Z., Koefoed, P., and Zheng, X-Y. (2021) INVITED REVIEW: Geochemistry and cosmochemistry of potassium stable isotopes. GEOCHEMISTRY81, 125786. Supplementary Material: Potassium Isotope Database
A new tracer using potassium isotopes has been recently developed to study a variety of Earth and environmental processes, such as continental weathering, clay formation, hydrothermal alteration, oceanic plate subduction, arc volcanism, soil development, and plant growth. Photo credit: NASA. Graphic design: Sean Garcia/Washington University in St. Louis. Download Graphic: PDF, JPEG, TIFF, PNG.
  1. Magna, T., Jiang, Y., Skála, R., Wang, K., Sossi, P. A., and Žák, K. (2021) Potassium elemental and isotope constraints on the formation of tektites and element loss during impactsGeochimica et Cosmochimica Acta,  312, 321-342.
  2. Liu, H., Xue, Y-Y., Zhang, G., Sun, W-D., Tian, Z., Tuller-Ross, B., and Wang, K. (2021) Potassium isotopic composition of low-temperature altered oceanic crust and its impact on the global K cycle. Geochimica et Cosmochimica Acta311, 59-73.
  3. Ionov, D., and Wang, K. (2021) Potassium distribution and isotope composition in the lithospheric mantle in relation to global Earth’s reservoirs. Geochimica et Cosmochimica Acta, 309, 151-170.
  4. Li, W., Liu, X.-M., Wang, K., Joel Fodrie, F., Yoshimura, T., and Hu, Y.-F. (2021) Potassium phases and isotopic composition in modern marine biogenic carbonates. Geochimica et Cosmochimica Acta, 304, 364-380.
  5. Liu, H., Xue, Y-Y., Wang, K., Sun, W-D., and Wang, K. (2021) Contributions of slab-derived fluids to ultrapotassic rocks indicated by K isotopes. Lithos, 396-397, 106202.
  6. Li, W., Liu, X-M., Wang, K., and Koefoed, P. (2021) Lithium and potassium isotope fractionation during silicate rock dissolution: an experimental approach. Chemical Geology, 568, 120142.
  7. Moynier, F., Hu, Y., Wang, K., Zhao, Y., Deng, Z., Moureau, J., Li, W., Simon, J., and Teng, F-Z. (2021) Potassium isotopic composition of various samples using a collision-cell inductively coupled plasma mass spectrometer, Nu Instrument Sapphire. Chemical Geology, 571, 120144.
  8. Wang, K., Peucker-Ehrenbrink, B., Chen, H., Lee, H., and Hasenmueller, E.A. (2021) Dissolved potassium isotopic composition of major world riversGeochimica et Cosmochimica Acta, 294, 145-159.
  9. Jiang, Y., Koefoed, P., Pravdivtseva, O., Chen, H., Li, C-H., Huang, F., Qin, L-P., Liu, J., and Wang, K. (2021) Early solar system aqueous activity: K isotope evidence from Allende. Meteoritics & Planetary Science, 56, 61-76.


  1. Koefoed, P., Pravdivtseva, O., Chen, H., Gerritzen, C., Thiemens, M.M., Wang, K. (2020) Potassium isotope systematics of the LL4 chondrite Hamlet: Implications for chondrule formation and alteration. Meteoritics & Planetary Science, 55, 1833-1847.
  2. Wang, K., Close, H.G., Tuller-Ross, B., and Chen, H. (2020) Global average potassium isotope composition of modern seawater. ACS Earth and Space Chemistry, 4, 1010-1017.
  3. Tian, Z., Jolliff, B.L., Korotev, R.L., Fegley, B. Jr., Lodders, K., Day, J.M.D., Chen, H., and Wang, K. (2020) Potassium isotopic composition of the Moon. Geochimica et Cosmochimica Acta, 280, 263-280.
  4. Wang, A., Yan, Y., Jolliff, B. L., McLennan, S. M., Wang, K., Shi, E., and Farrell, W. M. (2020) Chlorine release from common chlorides by Martian dust activity. Journal of Geophysical Research: Planets,125, e2019JE006283.
  5. Day, J.M.D., Moynier, F., Sossi, P.A., Wang, K., Meshik, A.P., Pradivtseva, O.V., Pettit, D.R. (2020) Moderately volatile element behavior at high temperature determined from nuclear detonation.Geochemical Perspectives Letters, 13, 54-60.
  6. Liu, H., Wang, K., Sun, W-D., Xiao, Y., Xue, Y-Y., and Tuller-Ross, B. (2020) Extremely light K in subducted low-T altered oceanic crust: Implications for K recycling in subduction zone. Geochimica et Cosmochimica Acta, 277, 206-223.
  7. Chen, H., Liu, X-M., and Wang, K. (2020) Potassium isotope fractionation during chemical weathering of basalts. Earth and Planetary Science Letters, 539, 116192.
  8. Bloom, H., Lodders, K., Chen, H., Zhao, C., Tian, Z., Koefoed, P., Pető, M. K., Jiang, Y., and Wang, K. (2020) Potassium isotope compositions of carbonaceous and ordinary chondrites: Implications on the origin of volatile depletion in the early solar systemGeochimica et Cosmochimica Acta, 277, 111-131.
  9. Zhao, C., Lodders, K., Bloom, H., Chen, H., Tian, Z., Koefoed, P., Pető, M. K., and Wang, K. (2020) Potassium isotopic compositions of enstatite meteoritesMeteoritics & Planetary Science, 55, 1404-1417.


  1. Chen, J., Jolliff, B.L., Wang, A., Korotev, R.L., Wang, K., Carpenter, P.K., Chen, H., Ling, Z., Fu, X., Ni, Y., Cao, H., and Huang, Y. (2019) Petrogenesis and shock metamorphism of basaltic lunar meteorites Northwest Africa 4734 and 10597. Journal of Geophysical Research: Planets, 124, 2583-2598.
  2. Tian, Z., Chen, H., Fegley, B. Jr., Lodders, K., Barrat, J-A., Day, J.M.D., and Wang, K. (2019) Potassium isotope compositions of howardite-eucrite-diogenite meteorites. Geochimica et Cosmochimica Acta, 266, 611-632.
  3. Tuller-Ross, B., Savage, P. S., Chen, H., and Wang, K. (2019) Potassium isotope fractionation during magmatic differentiation of basalt to rhyolite. Chemical Geology, 525, 37-45.
  4. Jiang, Y., Chen, H., Fegley, B. Jr., Lodders, K., Hsu, W., Jacobsen, S.B., and Wang, K. (2019) Implications of K, Cu and Zn isotopes for the formation of tektites. Geochimica et Cosmochimica Acta, 259, 170-187.
  5. Tuller-Ross, B., Marty, B., Chen, H., Kelley, K. A., Lee, H., and Wang, K. (2019) Potassium isotope systematics of oceanic basalts. Geochimica et Cosmochimica Acta, 259, 144-154.
  6. Chen, H., Meshik, A.P., Pravdivtseva, O.V., Day, J.M.D., and Wang, K. (2019) Potassium isotope fractionation during the high-temperature evaporation determined from the Trinity nuclear test. Chemical Geology, 522, 84-92.
  7. Lockmiller, K. A., Wang, K., Fike, D. A., Shaughnessy, A.R., and Hasenmueller, E.A., (2019) Using multiple tracers (F−, B, δ11B, and optical brighteners) to distinguish between municipal drinking water and wastewater inputs to urban streams. Science of The Total Environment, 671, 1245-1256.
  8. Chen, H., Tian, Z., Tuller-Ross, B., Korotev, R. L., and Wang, K. (2019) High-precision potassium isotopic analysis by MC-ICP-MS: An inter-laboratory comparison and refined K atomic weight. Journal of Analytical Atomic Spectrometry34, 160-171.
  9. Li, Y., Wang, W., Huang, S., Wang, K., and Wu, Z. (2019) First-principles investigation of the concentration effect on equilibrium fractionation of K isotopes in feldspars. Geochimica et Cosmochimica Acta, 245, 374-384.


  1. Wang, K., and Korotev, R. (2018). Meteorites. In Oxford Encyclopedia of Planetary Science. Oxford University Press.
  2. Wu, Z., Wang, A., Farrell, W. M., Yan, Y., Wang, K., Houghton, J., and Jackson, A. W. (2018) Forming perchlorates on Mars through plasma chemistry during dust events. Earth and Planetary Science Letters, 504, 94-105.


  1. Parendo, C. A., Jacobsen, S. B., and Wang, K. (2017) K isotopes as a tracer of seafloor hydrothermal alteration.Proceedings of the National Academy of Sciences, 114, 1827-1831.


  1. Wang, K., and Jacobsen, S. B. (2016) Potassium isotopic evidence for a high-energy giant impact origin of the MoonNature, 538, 487-490.
  2. Wang, K., and Jacobsen, S. B. (2016) An estimate of the Bulk Silicate Earth potassium isotopic composition based on MC-ICPMS measurements of basalts.Geochimica et Cosmochimica Acta178, 223-232.


  1. Wang, K., Jacobsen, S. B.,  Sedaghatpour, F., Chen, H., and Korotev, R.L. (2015) The earliest Lunar Magma Ocean differentiation recorded in Fe isotopes.Earth and Planetary Sciences Letters, 430, 202-208.
  2. Barrat, J. A., Rouxel, O., Wang, K., Moynier, F., Yamaguchi, A., Bischoff, A., and Langlade, J. (2015) Early stages of core segregation recorded by Fe isotopes in an asteroidal mantle.Earth and Planetary Sciences Letters, 419, 93-100.


  1. Wang, K., Savage, P.S., and Moynier, F.(2014)The iron isotope composition of enstatite meteorites: Implications for their origin and the metal/sulfide Fe isotopic fractionation factor.Geochimica et Cosmochimica Acta, 142, 149-165.
  2. Wang, K., Day, J.M.D., Korotev, R.L., Zeigler, R.A., and Moynier, F. (2014) Iron isotope fractionation during sulfide-rich felsic partial melting in early planetesimals.Earth and Planetary Sciences Letters, 392, 124-132.


  1. Moynier, F., Fujii, T., Wang, K., and Foriel, J. (2013) Ab initio calculations of the Fe(II) and Fe(III) isotopic effects in citrates, nicotianamine, and phytosiderophore, and new Fe isotopic measurements in higher plants.Comptes Rendus Geosciences, 345, 230-240.
  2. Wang, K., Moynier, F., Barrat, J-A., Zanda, B., Paniello, R.C., and Savage, P.S. (2013) Homogeneous distribution of Fe isotopes in the early solar nebula. Meteoritics & Planetary Sciences, 48, 354-364.


  1. Wang, K., Moynier, F., Podosek, F., and Foriel, J. (2012) An iron isotope perspective on the origin of the nanophase metallic iron in lunar regolith.Earth and Planetary Sciences Letters, 337-338, 17-24.
  2. Bishop, MC, Moynier F., Weinstein, C., Fraboulet, JG, Wang, K., and Foriel, J. (2012) The Cu isotopic composition of iron meteorites.Meteoritics & Planetary Sciences, 47, 268–276. link
  3. Wang, K., Moynier, F., Dauphas, N., Barrat, J.A., Craddock, P., and Sio, C. (2012) Iron isotope fractionation in planetary crusts.Geochimica et Cosmochimica Acta, 89, 31-45.


  1. Moynier, F., Blichert-Toft, J., Wang, K., Herzog, G., and Albarede, F. (2011) Elusive 60Fe in the early solar system.The Astrophysical Journal, 741, 71.
  2. Weinstein, C., Moynier, F., Wang, K., Paniello, R., Foriel, J., Catalano, J., and Pichat, S. (2011) Isotopic fractionation of Cu in plants.Chemical Geology, 286, 266-271.
  3. Wang, K., Moynier, F., Podosek, F., and Foriel, J. (2011) 58Fe and 54Cr in early solar system materials.The Astrophysical Journal Letters, 739, L58.
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