Robert Frei

Robert Frei

Professor

ORCID: 0000-0001-7708-9881

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  1. Published

    ‘Plug in plug' Os distillation

    Nägler, T. F. & Frei, Robert, 1997, In: Schweizerische Mineralogische und Petrographische Mitteilungen. 77, p. 123-127

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    trapped noble gases in native gold: Radiogenic He and fission Xe in  U-rich minerals accompanying placer gold

    Niedermann, S., Eugster, O., Thalmann, C., Frei, Robert, Kramers, J. D., Bruno, L. & Hofmann, B., 1994, In: Lunar Planetary Science. 25, p. 997-998

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Weathering on land and transport of chromium to the ocean in a subtropical region (Misiones, NW Argentina): A chromium stable isotope perspective

    Frei, Robert, Poiré, D. G. & Frei, Karin Margarita, Aug 2014, In: Chemical Geology. 381, p. 110-124 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Was the Black Hills domain (South Dakota) always part of the Archean Wyoming Craton? new evidence from ~3.4-2.7 Ga detrital-zircon populations found in both ~1.9 and ~2.5 Ga strata

    Dahl, P. S., Frei, Robert & Whitehouse, W. M. J., 2008, Geological Society of America Abstracts with Programs. Vol. 40(6). p. 145-15

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  5. Published

    Was it for walrus? Viking Age settlement and medieval walrus ivory trade in Iceland and Greenland

    Frei, K. M., Coutu, A. N., Smiarowski, K., Harrison, R., Madsen, C. K., Arneborg, J., Frei, Robert, Gudmundsson, G., Sindbaek, S. M., Woollett, J., Hartman, S., Hicks, M. & McGovern, T. H., 27 May 2015, In: World Archaeology. 47, 3, p. 439-466

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Variations of redox conditions in the atmosphere and Yangtze Platform during the Ediacaran-Cambrian transition: Constraints from Cr isotopes and Ce anomalies

    Wei, W., Frei, Robert, Gilleaudeau, G. J., Li, D., Wei, G., Huang, F. & Ling, H., 2020, In: Palaeogeography, Palaeoclimatology, Palaeocology. 543, 11 p., 109598.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Variations of cadmium concentrations and cadmium isotopes in Mytilus from North Atlantic and Baltic Sea

    Frederiksen, J. A. & Frei, Robert, 2021. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research

  8. Published

    Uranium isotope cycling on the highly productive Peruvian margin

    Bruggmann, S., Gilleaudeau, G. J., Romaniello, S. J., Severmann, S., Canfield, D. E., Anbar, A. D., Scholz, F. & Frei, Robert, 20 Feb 2022, In: Chemical Geology. 590, 12 p., 120705.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Unraveling the tectono-metamorphic history in the Isua supracrustals (West Greenland): Mineral stepwise leaching evidence for early Archean metasomatic-metamorphic events.

    Frei, Robert, Rosing, Minik Thorleif, Krogstad, E. J., Storey, M. & Albarede, F., 1999, publisher. p. 91

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  10. Published

    Unraveling the record of successive high grade events in the Central Zone of the Limpopo Belt using Pb single phase dating of metamorphic minerals

    Holzer, L., Frei, Robert, Barton jr., J. M. & Kramers, J. D., 1998, In: Precambrian Research. 87, p. 87-115

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    U-Pb geochronologic study of magmatic zircon in Paleoproterozoic granitic pegmatite and associated metapelites, Black Hills, South Dakota: Implications for gold petrogenesis and sedimentary provenance

    Ghosh, A., Frei, Robert, Whitehouse, M. J. & Dahl, P. S., 2008, Geological Society of America Abstracts with Programs,. Vol. 40(6). p. 145-160

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  12. Published

    U-Pb and Pb-Pb dating of diagenetic processes in black shales: True and false Pb-Pb isochrons

    Liebetrau, V., Frei, Robert, Buchardt, B. & Israelson, C., 1997, In: EOS : Transactions. v.78/46, p. F381

    Research output: Contribution to journal › Journal article › Research

  13. Published

    U-Pb age constraints for the La Tuna Granite and Montevideo Formation (Paleoproterozoic, Uruguay): Unravelling the structure of the Rio de la Plata Craton

    Pamoukaghlian, K., Gaucher, C., Frei, Robert, Poire, D. G., Chemale, F., Frei, D. & Will, T. M., 2017, In: Journal of South American Earth Sciences. 79, p. 443-458 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    U, He and Ar isotope systematics in fluid inclusions of vein gold, quartz and carbonates from Brusson, Val d'Ayas (NW Italy): (U+Th)/He dating of gold and isotope tracing

    Pettke, T., Frei, Robert, Kamensky, I. L., Kramers, J. D., Tolstikhin, I. N. & Villa, I. M., 1995, In: Boletin de la Sociedad Espanola del Mineralogia. 18, p. 181-182

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Tracing the dynamic life story of a Bronze Age Female

    Frei, Karin Margarita, Mannering, U., Kristiansen, K., Allentoft, Morten Erik, Wilson, A. S., Skals, I., Tridico, S., Nosch, Marie Louise Bech, Willerslev, Eske, Clarke, L. & Frei, Robert, 2015, In: Scientific Reports. 10431.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Tracing the Indian Ocean Mantle Domain Through Time: Isotopic Results from Old West Indian, East Tethyan, and South Pacific Seafloor

    Mahoney, J. J., Frei, Robert, Tejada, M. L. G., Mo, X. X., Leat, P. T. & Nägler, T. F., 1998, In: Journal of Petrology. v.39/7, p. 1285-1306

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Tracing redox processes during paleoclimatic changes in the Neoproterozoic: stable chromium isotopic results from the Arroyo del Soldado Group (Ediacaran, Uruguay)

    Frei, Robert & Gaucher, C., 2007.

    Research output: Contribution to conference › Conference abstract for conference › Research

  18. Published

    Trace elements and isotope geochemistry (C, O, Fe, Cr) of the Cauê iron formation, Quadrilátero Ferrífero, Brazil: Evidence for widespread microbial dissimilatory iron reduction at the Archean/Paleoproterozoic transition

    Teixeira, N. L., Caxito, F. A., Rosière, C. A., Pecoits, E., Vieira, L., Frei, Robert, Sial, A. N. & Poitrasson, F., 2017, In: Precambrian Research. 298, p. 39-55 17 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Trace element systematics of the Neoarchean Fiskenæsset anorthosites and associated rocks, SW Greenland: Evidence for a magmatic arc origin.

    Polat, A. B., Appel, P. W. U., Fryer, B., Windley, B., Frei, Robert, Samson, I. M. & Huang, H., 2009, In: Precambrian Research. 175, p. 87-115

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Trace element and isotopic characterization of Neoarchean and Paleoproterozoic iron formations in the Black Hills (South Dakota, USA): assessment of chemical change during 2.9-1.9 Ga deposition bracketing the 2.4-2.2 Ga first rise of atmospheric oxygen

    Frei, Robert, Frei, K. M., Rintza Hansen, T., Munck Frandsson, M. & Apel Jensen, L., 2008, In: Precambrian Research. 162, p. 441-474 33 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Trace element and isotopic characterization of Neoarchean - Paleoproterozoic BIFs (Black Hills, South Dakota, USA) straddling thefirst rise of atmospheric oxygen between 2.4 and 2.0 Ga

    Frei, Robert & Dahl, P. S., 2008, In: Geochim. Cosmochim.. Acta 71, Supplement 1, p. A296

    Research output: Contribution to journal › Conference abstract in journal › Research

  22. Published

    Towards a calibrated astronomical timescale for the Mid Ordovician

    Rasmussen, Christian Mac Ørum, Thibault, Nicolas Rudolph, Stouge, Svend, Siggaard-Andersen, M. L., Costa, M., Schovsbo, N., Calner, M., Dahlqvist, P., Korte, Christoph, Frei, Robert, Storey, M., Connelly, J., Pedersen, G. K., Rasmussen, B. W., Rasmussen, J. A. & Nielsen, A. T., 2016, p. 2812 .

    Research output: Contribution to conference › Conference abstract for conference › Research

  23. Published

    Topography-driven hydrothermal breccia mineralization of Pliocene age at Grimsel Pass, Aar massif, Central Swiss Alps

    Hofmann, B. A., Helfer, M., Diamond, L. W., Villa, I. M., Frei, Robert & Eikenberg, J., 2004, In: Schweizerische Mineralogische und Petrographische Mitteilungen. 84, 3, p. 271-302

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Timing between granitoid emplacement and associated gold mineralization: examples from the ca. 2.7 Ga Harare-Shamva Greenstone Belt, Northern Zimbabwe

    Vinyu, M. L., Frei, Robert, Frei, Robert & Jelsma, H. A., 1996, In: Canadian Journal of Earth Sciences. 33, 7, p. 981-992

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Time constraints on the tectonic evolution of the eastern Sierras Pampeanas (Central Argentina).

    Siegesmund, S., Steenken, A., Martino, R. D., Wemmer, K., Lopez de Luchi, M. G., Frei, Robert, Presnyakov, S. & Guereschi, A., 2010, In: International Journal of Earth Sciences. 99, 6, p. 1199-1226

    Research output: Contribution to journal › Journal article › Research › peer-review

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