Thomas Kruijer

Portrait of Thomas Kruijer

Send Email Download Image
  • Title
    Staff Scientist
  • Email
    kruijer1@llnl.gov
  • Phone
    (925) 424-2456
  • Organization
    Not Available

Research appointments

Since 2022: Staff Scientist, Lawrence Livermore National Laboratory

2020–2021: Professor (W3), Museum für Naturkunde & Freie Universität Berlin 

2020: Staff Scientist, Lawrence Livermore National Laboratory

2017-2020 Postdoctoral Researcher, Lawrence Livermore National Laboratory

2014-2017: Research Associate/Lecturer (Akademischer Rat), University of Münster

2013-2014: Postdoctoral researcher, University of Münster

2013: Postdoctoral researcher, ETH Zürich

Research interests

Thomas Kruijer is an isotope geo- and cosmochemist working in the Chemical & Isotopic Signatures group at LLNL. His research is aimed at determining the origin, accretion, and early evolution of planets. This is accomplished by reconstructing the processes and chronology of events that occurred during the earliest stages of Solar System history. To this end, Kruijer measures small-scale isotopic variations in extraterrestrial rock samples, such as meteorites and lunar rocks, by utilizing isotope ratio mass spectrometry techniques. To facilitate advances in this field of research, he has developed and implemented (i) novel methods for isotope ratio measurements using thermal ionization (TIMS) and inductivity coupled plasma mass spectrometry (MC-ICPMS), as well as (ii) state-of-the-art techniques for clean-lab sample preparation and element purification.

Kruijer has used isotopic signatures and radiometric ages of planetary samples and lunar rocks to study diverse aspects of early Solar System evolution, including:

♣ the evolution of the solar protoplanetary disk

♣ the origin, accretion, and core formation history of protoplanets

♣ the heritage and formation location of planetary building blocks

♣ the accretion and early differentiation of Earth and Mars

♣ the origin and early evolution of the Moon

Kruijer's research at LLNL is also focused on addressing problems in nuclear forensics by studying isotopic signatures in anthropogenic samples and/or nuclear materials and by exploiting the analytical expertise required to make advances in cosmochemistry and lunar science using isotopic tools.

PhD in Isotope Geo- and Cosmochemistry, ETH Zürich, 2013

MSc in Geology and Isotope geochemistry, VU University Amsterdam, 2009

BSc in Earth Sciences, VU University Amsterdam, 2007

Publications as of April 2022. Please see ORCID (https://orcid.org/0000-0003-0974-4324) and Google Scholar (https://scholar.google.com/citations?user=INKCxa4AAAAJ&hl=en) for additional publications.

Articles:

(38)   Kruijer T.S., Burkhardt C., Borg L.E., Kleine T. (2022) Tungsten and molybdenum isotopic evidence for an impact origin of pallasites. Earth and Planetary Science Letters, 584, 117440.

(37)   Borg, L.E., Brennecka G.A., Kruijer T.S. (2022) The Origin of Volatile Elements in the Earth-Moon System. Proceedings of the National Academy of Sciences of the United States of America, 119(8), e2115726119.

(36)   Burkhardt C., Spitzer, F., Morbidelli A., Budde G., Render J., Kruijer T.S., Kleine T. (2021) Terrestrial planet formation from lost inner solar system material. Science Advances, 7 (52).

(35)   Kruijer T.S., Archer G.J., Kleine T. (2021) No 182W evidence for early Moon formation. Comment on Thiemens M.M. et al. 2019 “Early Moon formation inferred from hafnium–tungsten systematics”. Nature Geoscience, 14, 714–715.

(34)   Hellmann J.L., Kruijer T.S., Metzler K., Patzek M., Pack A., Berndt J., Kleine T. (2020) Hf-W chronology of a macrochondrule from the L5/6 chondrite Northwest Africa 8192. Meteoritics and Planetary Science 10, 2241-2255.

(33)   Brennecka G.A., Burkhardt C., Budde G., Kruijer T.S., Nimmo F., Kleine T. (2020) Astronomical context of Solar System formation from molybdenum isotopes in meteorite inclusions. Science, 370, 837–840.

(32)   Spitzer F., Burkhardt C., Budde G., Kruijer T.S., Morbidelli A., Kleine T. (2020) Isotopic evolution of the inner Solar System inferred from molybdenum isotopes in meteorites. Astrophysical Journal Letters, 898:L2 (10pp).

(31)   Kruijer T.S., Borg L.E., Wimpenny J., Sio C.K. (2020) Onset of magma ocean solidification on Mars inferred from Mn-Cr chronometry. Earth and Planetary Science Letters, 542, 116315.

(30)   Kleine T., Budde G., Burkhardt C., Kruijer T.S., Worsham E.A., Morbidelli A., Nimmo F. (2020) The non-carbonaceous–carbonaceous meteorite dichotomy. Space Science Reviews, 216, 55.

(29)   Kruijer T.S., Kleine T., Borg L.E. (2020) The great isotopic dichotomy of the early Solar System. Nature Astronomy 4, 32-40.

(28)   Kruijer T.S., Kleine T. (2019) Age and origin of IIE iron meteorites inferred from Hf-W chronology. Geochimica et Cosmochima Acta 262, 92-103.

(27)   Borg L.E., Gaffney A.M., Kruijer T.S., Marks N.A., Sio, C.K., Wimpenny J. (2019) Isotopic evidence for a young lunar magma ocean. Earth and Planetary Science Letters 523, 115706.

(26)   Worsham E.A., Burkhardt C., Budde G., Fischer-Gödde M., Kruijer T.S., Kleine T. (2019) Distinct evolution of the carbonaceous–non-carbonaceous reservoirs: Insights from Ru, Mo, and W isotopes. Earth and Planetary Science Letters 521, 103-112.

(25)   Hellmann J.L., Kruijer T.S., Van Orman J.A., Metzler K., Kleine T. (2019) Hf-W chronology of ordinary chondrites. Geochimica et Cosmochimica Acta, 258, 290-309.

(24)   Archer G.J., Walker R.J., Tino J., Blackburn T., Kruijer T.S., Hellmann J. (2019) Siderophile element constraints on the thermal history of the H chondrite parent body. Geochimica et Cosmochimica Acta 245, 556-576.

(23)   Kruijer T.S., Kleine T. (2018) No 182W excess in the Ontong Java Plateau Source. Chemical Geology, 485, 24-31.

(22)   Neumann W., Kruijer T.S., Breuer D., Kleine T. (2018) Multi-stage core formation in planetesimals
revealed by numerical modelling and Hf-W chronometry of iron meteorites. Journal of Geophysical Research – Planets, 123.

(21)   Budde G, Kruijer T.S., Kleine T. (2018) Hf-W chronology of CR chondrites: Implications for the timescales of chondrule formation and the distribution of 26Al in the solar nebula. Geochimica et Cosmochimica Acta, 222, 284-304.

(20)   Matthes M., Fischer-Gödde M., Kruijer T.S., Kleine T. (2018) Pd-Ag chronometry of IVA iron meteorites and the crystallization, compaction and cooling of a protoplanetary core. Geochimica et Cosmochimica Acta 220, 82-95.

(19)   Herd C.D.K., Walton E.L., Agee C.B., Muttik N., Ziegler K., Shearer C.K., Bell A.S., Santos A.R., Burger P.V., Simon J.I., Tappa M.J., McCubbin F.M., Gattacceca J., Lagroix F., Sanborn M.E., Yin Q, Cassata W.S., Borg L.E., Lindvall R.E., Kruijer T.S., Brennecka G.A., Kleine T. (2017) The Northwest Africa 8159 Martian Meteorite: Expanding the Martian Sample Suite to the Early Amazonian. Geochimica et Cosmochimica Acta 218, 1-26.

(18)   Kruijer T.S., Kleine T. (2017) Tungsten isotopes and the origin of the Moon. Earth and Planetary Science Letters 475, 15-24.

(17)   Kruijer T.S., Kleine T., Borg L.E., Brennecka G.A., Fischer-Gödde M., Irving A.J., Bischoff A., Agee C.B. (2017) The early differentiation of Mars inferred from Hf-W chronometry. Earth and Planetary Science Letters 474, 345-354.

(16)   Kruijer T.S., Kleine T., Burkhardt C., Budde G. (2017) Age of Jupiter inferred from the distinct genetics and formation times of meteorites. Proceedings of the National Academy of Sciences of the United States of America 114, 6712-6716.

(15)   Krabbe N., Kruijer T.S., Kleine T. (2017) Tungsten stable isotope compositions of terrestrial samples and meteorites determined by double spike MC-ICPMS. Chemical Geology 450, 135-154.

(14)   Dale C.W., Kruijer T.S., Burton K.W. (2017) Highly siderophile element and 182W evidence for a partial late veneer in the source of 3.8 Ga rocks from Isua, Greenland. Earth and Planetary Science Letters 454, 293-303.

(13)   Budde G., Burkhardt C., Brennecka G.A., Fischer-Gödde M., Kruijer T.S., Kleine T. (2016) Molybdenum isotopic evidence for the origin of chondrules and a distinct heritage of carbonaceous and non-carbonaceous meteorites. Earth and Planetary Science Letters 454, 293-303.

(12)   Budde G., Kleine T., Kruijer T.S., Burkhardt C., Metzler K. (2016) Tungsten isotopic evidence for the age and origin of chondrules. Proceedings of the National Academy of Sciences of the United States of America 113, 2886-2891.

(11)   Fischer-Gödde M., Burkhardt C., Kruijer T.S., Kleine T. (2015) Ru isotope heterogeneity in the solar protoplanetary disk. Geochimica et Cosmochimica Acta 168, 151-171.

(10)   Matthes M., Fischer-Gödde M., Kruijer T.S., Leya I., Kleine T. (2015) Pd-Ag chronometry of iron meteorites: correction of neutron capture-effects and application to the cooling history of differentiated protoplanets. Geochimica et Cosmochimica Acta 169, 45-62.

(9)     Cook D.L., Kruijer T.S., Kleine, T
 (2015) Reply to comment by Peters et al. (2015) on “Cosmogenic 180W variations in meteorites and re-assessment of a possible 184Os–180W decay system” Geochimica et Cosmochimica Acta 169, 240-243.

(8)     Kruijer T.S., Kleine T., Fischer-Gödde M., Sprung (2015) Lunar tungsten isotopic evidence for the late veneer. Nature 520, 534-537.

(7)     Budde G., Kruijer T.S., Fischer-Gödde M., Irving A.J., Kleine T (2015) Planetesimal differentiation revealed by the Hf-W systematics of ureilites. Earth and Planetary Science Letters 430, 316-325.

(6)     Kruijer T.S., Touboul M., Fischer-Gödde M., Bermingham K, Kleine T., Walker R.J. (2014) Protracted core formation and rapid accretion of protoplanets. Science 344, 1150-1154.

(5)     Kruijer T.S., Kleine T., Fischer-Gödde M., Burkhardt C., Wieler, R. (2014) Nucleosynthetic W isotope anomalies and the Hf-W chronometry of Ca-Al-rich inclusions. Earth and Planetary Science Letters 403, 317-327.

(4)     Cook D.L., Kruijer T.S., Kleine, T
(2014) Cosmogenic 180W variations in meteorites and re-assessment of a possible 184Os–180W decay system. Geochimica et Cosmochimica Acta 140, 160-176.

(3)     Kruijer T.S., Sprung P., Kleine T., Leya I., Wieler R. (2013) Abundance and isotopic composition of Cd in iron meteorites. Meteoritics and Planetary Science 48, 2597-2607.

(2)     Kruijer T.S., Fischer-Gödde M., Kleine T., Sprung P., Leya I., Wieler R. (2013) Neutron capture on Pt isotopes in iron meteorites and the Hf-W chronology of core formation in planetesimals. Earth and Planetary Science Letters 361, 162-172.

(1)     Kruijer T.S., Sprung P., Kleine T., Leya I., Burkhardt C., Wieler R. (2012) Hf-W chronometry of core formation in planetesimals inferred from weakly irradiated iron meteorites. Geochimica et Cosmochimica Acta 99, 287-304.

Book chapters

Bermingham, K. & Kruijer, T.S. (2022). Isotopic Constraints on the Formation of the Main Belt. In S. Marchi, C. Raymond, & C. Russell (Eds.), Vesta and Ceres: Insights from the Dawn Mission for the Origin of the Solar System (Cambridge Planetary Science, pp. 212-226). Cambridge: Cambridge University Press.

Kleine, T., Budde, G., Hellmann, J., Kruijer, T.S., Burkhardt, C. (2018). Tungsten Isotopes and the Origin of Chondrules and Chondrites. In S. Russell, H. Connolly Jr., & A. Krot (Eds.), Chondrules: Records of Protoplanetary Disk Processes (Cambridge Planetary Science, pp. 276-299). Cambridge: Cambridge University Press.

Kruijer T.S., Kleine T. (2018) Origin and Evolution of the Moon: Tungsten Isotopic Constraints. Encyclopedia of Lunar Science, Doi: 10.1007/978-3-319-05546-6_81-1.

 

  • 2020 – Nier Prize, Meteoritical Society
  • 2019 – F.W. Clarke Award, Geochemical Society
  • 2014 – ETH Medal (Distinction of doctoral research)
  • 2013 – LPI Career Development Award, Lunar and Planetary Institute
  • 2010 – Escher Prize, Royal Geological and Mining Society (KNGMG)

Member of the American Geophysical Union (AGU), Geochemical Society, and the Meteoritical Society.

Linkedin profile: https://www.linkedin.com/in/thomaskruijer