Research Foci
Early solar system evolution
In particular: Early solar system chronology; Early evolution of the solar protoplanerary disk; Origin, accretion and differentiation history of small planetary bodies; Accretion and early differentiation of Earth and Moon; Irradiation and neutron capture effects in extraterrestrial materials; Nucleosynthetic isotope heterogeneity; Iron meteorites; Refractory inclusions (CAI)
Origin, accretion and differentiation history of protoplanets
Hf-W chronometry; Tungsten (W) isotopes; Platinum (Pt) isotopes; Ultra-clean laboratory techniques: sample digestion, chemical separation; Multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS)
Hf-W chronometry of terrestrial and extraterrestrial materials
Accretion and early differentiation history of Earth , Moon, and Mars
Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICPMS)
CV
Academic Education
- Doctoral degree (Dr. sc. ETH Zurich) in isotope cosmochemistry, ETH Zurich, Inst. of Geochemistry and Petrology, Switzerland.
- Master of Science (MSc.) in Geosciences of Basins and Lithosphere - Research Master VU University Amsterdam, Faculty of Earth and Life Sciences, The Netherlands
- Bachelor of Science (BSc.) in Earth sciences (Geology) VU University Amsterdam, Faculty of Earth and Life Sciences, The Netherlands
Positions
- Research Associate (Akad. Rat auf Zeit.), Inst. for Planetology, University of Münster
- Postdoctoral research fellow, Institute for Planetology, University of Münster, Germany
- Postdoctoral researcher, Institute for Geochemistry and Petrology, ETH Zürich, Switzerland
- Scientific asisstant, Institute for Geochemistry and Petrology, ETH Zürich, Switzerland
Honors
- Medaille der ETH Zürich – Eidgenössische Technische Hochschule Zürich
- Escher prize – Royal Geological and Mining Society (KNGMG)
Project
- SPP 1385 - Subproject: Molybdenum isotope anomalies in fine-grained refractory inclusions from Allende and Vigarano ( – )
Subproject in DFG-Joint Project Hosted outside the University of Münster: DFG - Priority Programme | Project Number: KR 4463/1-1
- SPP 1385 - Subproject: Molybdenum isotope anomalies in fine-grained refractory inclusions from Allende and Vigarano ( – )
Publications
- Hellmann, JL, Kruijer, TS, Metzler, K, Patzek, M, Pack, A, Berndt, J, and Kleine, T. . “Hf-W chronology of a macrochondrule from the L5/6 chondrite Northwest Africa 8192.” Meteoritics and Planetary Science, № 55 (10): 2241–2255. doi: 10.1111/maps.13571.
- Hellmann, JL, Kruijer, TS, Van Orman, JA, Metzler, K, and Kleine, T. . “Hf-W chronology of ordinary chondrites.” Geochimica et Cosmochimica Acta, № 258: 290–309. doi: 10.1016/j.gca.2019.05.040.
- Budde, G., Kruijer, T.S., and Kleine, T. . “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. doi: 10.1016/j.gca.2017.10.014.
- Kruijer, T.S. Kleine, and T.. . “No 182W excess in the Ontong Java Plateau source.” Chemical Geology, № 485: 24–31. doi: 10.1016/j.chemgeo.2018.03.024.
- Kruijer, T., and Kleine, T. . “Tungsten isotopes and the origin of the Moon.” Earth and Planetary Science Letters, № 475 (null): 15–24. doi: 10.1016/j.epsl.2017.07.021.
- Kruijer, T., Kleine, T., Borg, L., Brennecka, G., Irving, A., Bischoff, A., and Agee, C. . “The early differentiation of Mars inferred from Hf–W chronometry.” Earth and Planetary Science Letters, № 474 (null): 345–354. doi: 10.1016/j.epsl.2017.06.047.
- Kruijer, T.S. Burkhardt, C. Budde, G. Kleine, and T.. . “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 (26): 6712–6716. doi: 10.1073/pnas.1704461114.
- Krabbe, N., Kruijer, T., and Kleine, T. . “Tungsten stable isotope compositions of terrestrial samples and meteorites determined by double spike MC-ICPMS.” Chemical Geology, № 450 (null): 135–144. doi: 10.1016/j.chemgeo.2016.12.024.
- Dale, C.W., Kruijer, T.S., and Burton, K.W. . “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, № 458: 394–404.
- Herd, C., Walton, E., Agee, C., Muttik, N., Ziegler, K., Shearer, C., Bell, A., Santos, A., Burger, P., Simon, J., Tappa, M., McCubbin, F., Gattacceca, J., Lagroix, F., Sanborn, M., Yin, Q., Cassata, W., Borg, L., Lindvall, R., Kruijer, T., Brennecka, G., Kleine, T., Nishiizumi, K., and Caffee, M. . “The Northwest Africa 8159 martian meteorite: Expanding the martian sample suite to the early Amazonian.” Geochimica et Cosmochimica Acta, № 218 (null): 1–26. doi: 10.1016/j.gca.2017.08.037.
- Budde, G., Burkhardt, C., Brennecka, G.A., Fischer-Gödde, M., Kruijer, T.S., and Kleine, T. . “Molybdenum isotopic evidence for the origin of chondrules and a distinct genetic heritage of carbonaceous and non-carbonaceous meteorites.” Earth and Planetary Science Letters, № 454: 293–303. doi: 10.1016/j.epsl.2016.09.020.
- Budde, G., Kleine, T., Kruijer, T.S., Burkhardt, C., and Metzler, K. . “Tungsten isotopic constraints on the age and origin of chondrules.” Proceedings of the National Academy of Sciences of the United States of America, № 113: 2886–2891. doi: 10.1073/pnas.1524980113.
- Budde, G., Kruijer, T.S., Fischer-Gödde, M., Irving, A.J., and Kleine, T. . “Planetesimal differentiation revealed by the Hf-W systematics of ureilites.” Earth and Planetary Science Letters, № 430: 316–325. doi: 10.1016/j.epsl.2015.08.034.
- Fischer-Gödde, M., Burkhardt, C., Kruijer, T., and Kleine, T. . “Ru isotope heterogeneity in the solar protoplanetary disk.” Geochimica et Cosmochimica Acta, № 168: 151–171. doi: 10.1016/j.gca.2015.07.032.
- Matthes, M., Fischer-Gödde, M., Kruijer, T., Leya, I., and Kleine, T. . “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 (null): 45–62. doi: 10.1016/j.gca.2015.07.027.
- Kruijer, Thomas, Kleine, Thorsten, Fischer-Gödde, Mario, and Sprung, Peter. . “Lunar tungsten isotopic evidence for the late veneer.” Nature, № 520: 534–537.
- Cook, D.L., Kruijer, T.S., and Kleine, T. . “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.
- Kruijer, T.S., Kleine, T., Fischer-Gödde, M., Burkhardt, C., Wieler, and R.. . “Nucleosynthetic W isotope anomalies and the Hf-W chronometry of Ca-Al-rich inclusions.” Earth and Planetary Science Letters, № 403: 317–327.
- Kruijer, T.S., Touboul, M., Fischer-Godde, M., Bermingham, K.R., Walker, R.J., and Kleine, T. . “Protracted core formation and rapid accretion of protoplanets.” Science, № 344 (6188): 1150–1154. doi: 10.1126/science.1251766.
- Cook, D.L., Kruijer, T.S., Leya, I., and Kleine, T. . “Cosmogenic 180W variations in meteorites and re-assessment of a possible 184Os-180W decay system.” Geochimica et Cosmochimica Acta, № 140 (null): 160–176. doi: 10.1016/j.gca.2014.05.013.
Research Articles (Journals)
- Kruijer, T.S., Sprung, P., Kleine, T., Leya, I., and Wieler, R. . “The abundance and isotopic composition of Cd in iron meteorites.” Meteoritics and Planetary Science, № 48: 2597–2607.
- Kruijer, TS, Fischer-Gödde, M, Kleine, T, Sprung, P, Leya, I, and Wieler, R. . “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. doi: 10.1016/j.epsl.2012.10.014.
Theses (Doctoral or Postdoctoral)
- Kruijer, Thomas. . “Hf-W chronology of planetary accretion and differentiation at the dawn of solar system history.” Dissertation thesis, ETH Zurich.
- Kruijer, T.S., Sprung, P., Kleine, T., Leya, I., Burkhardt, C., and Wieler, R. . “Hf–W chronometry of core formation in planetesimals inferred from weakly irradiated iron meteorites.” Geochimica et Cosmochimica Acta, № 99: 287–304.
Dr. Thomas Kruijer
