Robert Frei

Robert Frei

Professor

ORCID: 0000-0001-7708-9881

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  1. Published

    The evolution of the mineralizing fluid in the porphyry copper system of Skouries, NE Chalkidiki, (Greece): evidence from combined Pb-Sr and stable isotope data

    Frei, Robert, 1995, In: Economic Geology . 90, p. 746-762

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

  2. Published

    Surface water oxygenation and low bioproductivity during deposition of iron formation of the Jacadigo Group (Brazil): Insights from combined cadmium – Chromium isotopes

    Frei, Robert, Claudio, G., Boggiani, P. C., Frederiksen, J. A., Walker, Samantha Renee, Albuquerque Fernandes, H. & Caxito, F. A., 2024, In: Chemical Geology. 657, 122101.

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

  3. Published

    Signals of combined chromium–cadmium isotopes in basin waters of the Early Cambrian – Results from the Maoshi and Zhijin sections, Yangtze Platform, South China

    Frei, Robert, Xu, L., Frederiksen, J. A. & Lehmann, B., 1 Mar 2021, In: Chemical Geology. 563, 20 p., 120061.

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

  4. Published

    Mineral occurrences in central East Greenland (70 N-75 N) and their relation to the Caledonian orogeny: a Sr-Nd-Pb isotopic study of scheelite

    Frei, Robert & Stendal, H., 2008, The Greenland Caledonides - evolution of the northeast margin of Laurentia. Smith, M. P., Higgins, A. K. & Gilotti, J. A. (eds.). Boulder, Colo.: The Geological Society of America, p. 293-306 (Memoir / Geological Society of America; No. 202).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  5. Published

    Oxidative elemental cycling under the low O2 Eoarchean atmosphere

    Frei, Robert, Crowe, S. A., Bau, M., Polat, A., Fowle, D. A. & Døssing, L. N., 11 Feb 2016, In: Scientific Reports. 6, 21058.

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

  6. Published

    Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes

    Frei, Robert, Gaucher, C., Canfield, D. E. & Poulton, S. W., 2009, In: Nature. 461, p. 250-253

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

  7. Published

    Isotope (Pb, Rb-Sr, S, O, C, U-Pb) geochemical investigations on Tertiary intrusives and related mineralizations in the Serbomacedonian Pb-Zn, Sb+Cu-Mo metallogenetic province in Northern Greece

    Frei, Robert, 1992, Swiss Federal Institute of Technology (ETH) Zürich, Switzerland. 231 p.

    Research output: Book/Report › Ph.D. thesis › Research

  8. Published

    Studies of progressive leaching in single mineral Pb/Pb dating: Nuclear Microprobe Technology and Applications

    Frei, Robert, Prozesky, V. M. & Przybylowicz, W., 1997, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. B 130, p. 676-681

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

  9. Published

    Lithospheric mantle xenoliths sampled by melts from upwelling asthenosphere: The Quaternary Tasse alkaline basalts of southeastern British Columbia, Canada

    Friedman, E., Polat, A., Thorkelson, D. J. & Frei, Robert, May 2016, In: Gondwana Research. 33, p. 209-230

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

  10. Published

    The role of pH on Cr(VI) partitioning and isotopic fractionation during its incorporation in calcite

    Füger, A., Bruggmann, S., Frei, Robert, Leis, A., Dietzel, M. & Mavromatis, V., 2019, In: Geochimica et Cosmochimica Acta. 265, p. 520-532 13 p.

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

  11. Published

    Pervasive early diagenetic dolomitization, subsequent hydrothermal alteration, and late stage hydrocarbon accumulation in a Middle Triassic carbonate sequence (Szeged Basin, SE Hungary)

    Garaguly, I., Varga, A., Raucsik, B., Schubert, F., Czuppon, G. & Frei, Robert, 2018, In: Marine and Petroleum Geology. 98, p. 270-290 21 p.

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

  12. Published

    Mesoproterozoic evolution of the Rio de la Plata Craton in Uruguay: at the heart of Rodinia?

    Gaucher, C., Frei, Robert, Chemale, F., Frei, D., Bossi, G., Martinez, G., Chiglino, L. & Cernuschi, F., 2011, In: International Journal of Earth Sciences. 100, 2-3, p. 273-288 16 p.

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

  13. Published

    The Archean-Proterozoic Boundary and the Great Oxidation Event

    Gaucher, C. & Frei, Robert, 2019, Chemostratigraphy Across Major Chronological Boundaries. Sial, A. N., Gaucher, C., Ramkumar, M. & Ferreira, V. P. (eds.). Wiley, p. 35-45 11 p. (Geophysical Monograph Series, Vol. 240).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  14. Published

    Comment on: “Chemostratigraphic constraints on early Ediacaran carbonate rampdynamics, Río de la Plata craton, Uruguay” by Aubet et al. Gondwana Research, Volume 22, Issues 3-4, November 2012, Pages 1073-1090

    Gaucher, C., Sial, A. N., Frei, Robert, Sprechmann, P., Bossi, J., Poiré, D. G., Blanco, G. & Sánchez Bettucci, L., 2013, In: Gondwana Research. 23, 3, p. 1183-1185 3 p.

    Research output: Contribution to journal › Comment/debate › Research

  15. Published

    Chemostratigraphy of Neoproterozoic Banded Iron Formation (BIF): Types, Age and Origin

    Gaucher, C., Sial, A. N. & Frei, Robert, 2015, Chemostratigraphy: Concepts, Techniques, and Applications. Ramkumar, M. (ed.). Elsevier, p. 433–449

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  16. Published

    The Tapes Complex (Nico Pérez Terrane, Uruguay): Constraining the Mesoproterozoic evolution of the Río de la Plata Craton

    Gaucher, C., Frei, Robert, Samaniego, L., Will, T. M., Chemale, F., Gargiulo, M. F., Poiré, D. G., Ling, X., Li, X. & Li, Q., 1 Jan 2021, In: Journal of South American Earth Sciences. 105, 102906.

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

  17. Published

    Distribution of platinum-group elements and Os isotopes in chromite ores from Mayari-Baracoa Ophiolitic Belt (eastern Cuba)

    Gervilla, F., Proenza, J. A., Frei, Robert, Gonzales-Jimenes, J. M., Garrido, C. J., Melgarejo, J. C., Meibom, A., Diaz-Martinez, R. & Lavaut, W., 2005, In: Contributions to Mineralogy and Petrology. 150, p. 589-607

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

  18. 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

  19. Published

    Discussions: Metamorphism and polygenesis of the madem lakkos polymetallic sulfide deposit, Chalkidiki, Greece-a discussion

    Gilg, H. A., Frei, Robert, Kalogeropoulos, S. I. & Nicolaou, M., 1 Jul 1992, In: Economic Geology . 87, 4, p. 1184-1187 4 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  20. Published

    Isotope geochemistry and origin of illite-smectite and kaolinite from the Seilitz and Kemmlitz kaolin deposits, Saxony, Germany

    Gilg, H. A., Weber, B., Kasbohm, J. & Frei, Robert, 1 Mar 2003, In: Clay Minerals. 38, 1, p. 95-112 18 p.

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

  21. Published

    Isotope dating of residual kaolin deposits in Europe (Tirschenreuth, Germany and St. Yrieix, France)

    Gilg, H. A. & Frei, Robert, 1997, Energy and Mineral Resources for the 21st Century, Geology of Mineral Deposits, Mineral Economics: Proceedings of the 30th International Geological Congress. Rongfu, P. (ed.). Vol. 9. p. 123-133

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  22. Published

    Isotope geochemistry and origin of illite-smectite and kaolinite from the Seilitz and Kemmlitz kaolin deposits, Germany

    Gilg, H. A., Weber, B., Kasbohm, J. & Frei, Robert, 2003, In: Clay Minerals. 38, p. 95-112

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

  23. Published

    A new illite deposit near Le-Puy-en-Velay (France): Genesis and usage for waste encapsulation

    Gilg, H. A., Haus, R. & Frei, Robert, 1997, Mineral Deposits: Research and exploration - where do they meet ? . Papunen, H. (ed.). CRC Press/Balkema, p. 717-720

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  24. Published

    Metamorphism and polygenesis of the Madem Lakkos polymetallic sulfide deposit, Chalkidiki, Greece: a discussion

    Gilg, H. A., Frei, Robert, Kalogeropoulos, S. I. & Nicolaou, M., 1992, In: Economic Geology. 87, p. 1184-1193

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

  25. Published

    Chronology of magmatism and mineralization in the Kassandra mining area, Greece: The potentials and limitations of dating hydrothermal illites

    Gilg, H. A. & Frei, Robert, 1994, In: Geochimica et Cosmochimica Acta. 58, p. 2107-2122

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

  26. Published

    Isotope systematics of kaolinization: Implications for dating of continental weathering

    Gilg, H. A. & Frei, Robert, 1995, In: Berichte der Deutschen Mineralogischen Gesellschaft (Beihefte zum European Journal of Mineralogy). 7

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

  27. Published

    Oxygenation of the mid-Proterozoic atmosphere: clues from chromium isotopes in carbonates

    Gilleaudeau, G. J., Frei, Robert, Kaufman, A. J., Kah, L. C., Azmy, K., Bartley, J. K., Chernyavskiy, P. & Knoll, A. H., 2016, In: Geochemical Perspectives. 2, 2, p. 178-186 9 p.

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

  28. Published

    Stable isotope records across the Cretaceous-Paleogene transition, Stevns Klint, Denmark: New insights from the chromium isotope system

    Gilleaudeau, G. J., Vögelin, A. R., Thibault, Nicolas Rudolph, Moreau, J., Ullmann, C. V., Klaebe, R. M., Korte, Christoph & Frei, Robert, 2018, In: Geochimica et Cosmochimica Acta. 235, p. 305-332 28 p.

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

  29. Published

    Oceanographic Change in the Late Cretaceous Chalk Sea (Denmark): Clues from Chromium Isotopes

    Gilleaudeau, G. J., Vögelin, A. R., Thibault, Nicolas Rudolph, Moreau, J., Korte, Christoph, Ullmann, C. V. & Frei, Robert, 2016, p. p. 944.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  30. Published

    Osmium isotopes in the Wiedemann Fjord mantle xenoliths: A unique record of cratonic mantle formation by melt depletion in the Archaean

    Hanghøj, K., Kelemen, P., Bernstein, S., Blusztajn, J. & Frei, Robert, 2001, In: Geochemistry, Geophysics and Geosystem. 2

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

  31. Published

    The Wiedemann Fjord Mantle Xenoliths, a Unique Record of Cratonic Mantle Formation by Melt Depletion in the Archean

    Hanghøj, K., Keleman, P. B., Bernstein, S., Blusztajn, J. & Frei, Robert, 1999, In: EOS Trans. Am. Geophys. Union. Vol. 81, p. 1078

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

  32. Published

    New evidence for 2.01 Ga rifting of the easternmost Wyoming craton (Black Hills, SD): implications for break-up of a supercraton (Superia)

    Hark, J. S., Frei, Robert, Whitehouse, M. J. & Dahl, P. S., 2008, Geological Society of America Abstracts with Programs. Vol. 40(6). p. 145-170

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

  33. Published

    Petrology and geochemistry of the ~2.9 Ga Itilliarsuk banded iron formation and associated supracrustal rocks, West Greenland: source characteristics and depositional environment

    Haugaard, R., Frei, Robert, Stendal, H. & Konhauser, K., 2013, In: Precambrian Research. 229, p. 150-176 27 p.

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

  34. Published

    Constraints on the origin and evolution of magmas in the Payún Matrú Volcanic Field, Quaternary Andean back-arc of western Argentina

    Hernadno, I. R., Aragón, E., Frei, Robert, Gonzáles, P. D. & Spakman, W., Jan 2014, In: Journal of Petrology. 55, 1, p. 209-239 31 p.

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

  35. 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

  36. Published

    Age constraints of reduction spot formation from Permian red bed sediments, northern Switzerland, inferred from U-Th-Pb systematics

    Hofmann, B. A. & Frei, Robert, 1996, In: Schweizerische Mineralogische und Petrographische Mitteilungen. 76, p. 235-244

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

  37. Published

    C, Sr, Nd isotope chemostratigraphy and zircon provenance of the Witvlei Group (Namibia): Neoproterozoic glaciations and seawater evolution

    Hohl, S. V., Rodler, A. S., Viehmann, S., Huang, X., Xu, J., Gaucher, C., Germs, G. J. B., Hegenberger, W., Goderis, S., Wei, H. & Frei, Robert, 2022, In: Precambrian Research. 372, 20 p., 106600.

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

  38. Published

    The tectono-metamorphic event at 2 Ga in the Limpopo Belt and the resetting behaviour of chronometers at high temperature

    Holzer, L., Kamber, B. S., Kramers, J. D. & Frei, Robert, 1995, Proterozoic Crustal and Metallogenic Evolution: Special Publication of the Geological Survey of  Namibia. McManus, M. N. C. (ed.). Windhoek, p. 127-138

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  39. 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

  40. Published

    Bioavailable 87Sr/86Sr in European soils: A baseline for provenancing studies

    Hoogewerff, J. A., Reimann, C., Ueckermann, E., Frei, R., Frei, K. M., van Aswegen, T., Stirling, C., Reid, M., Clayton, A., Ladenberger, A., Albanese, S., Andersson, M., Baritz, R., Batista, M. J., Bel-Ian, A., Birke, M., Cicchella, D., Demetriades, A., De Vivo, B., De Vos, W. & 74 others, Dinelli, E., Duris, M., Dusza-Dobek, A., Eggen, O. A., Eklund, M., Ernstsen, V., Filzmoser, P., Flight, D. M. A., Forrester, S., Fuchs, M., Fugedi, U., Gilucis, A., Gregorauskiene, V., De Groot, W., Gulan, A., Halamic, J., Haslinger, E., Hayoz, P., Hoffmann, R., Hrvatovic, H., Husnjak, S., Janik, L., Jordan, G., Kaminari, M., Kirby, J., Kivisilla, J., Klos, V., Krone, F., Kwecko, F., Kuti, L., Lima, A., Locutura, J., Lucivjansky, D. P., Mann, A., Mackovych, D., Matschullat, J., McLaughlin, M., Malyuk, B. ,. I., Maquil, R., Meuli, R. G., Mol, G., Negrel, P., Connor, O., Oorts, R. K., Ottesen, R. T., Pasieczna, A., Petersell, W., Ponavic, M., Pramuka, S., Prazeres, C., Rauch, U., Radusinovic, S., Reimann, C., Sadeghi, M., Salpeteur, I., Scanlon, R., Schedl, A., Scheib, A. J., Schoeters, I., Sefcik, P., Sellersjo, E., Skopijak, F., Slaninka, I., Soriano-Disla, J. M., Sorsa, A., Srvkota, R., Stafilov, T., Tarvainen, T., Trendavilov, V., Valera, P., Verougstraete, V., Vidojevic, D., Zissimos, A. & Zomeni, Z., 2019, In: Science of the Total Environment. 672, p. 1033-1044 12 p.

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

  41. Published

    High Precision Ru, Pd, Ir, Pt, Re and REE Determinations in the Stevns Klint Cretaceous-Tertiary Boundary Reference Material (FC-1) by Isotope Dilution Multiple Collector Inductively Coupled Plasma-Mass Spectrometry

    Jensen, K. K., Baker, J. A., Waight, Tod, Frei, Robert & Peate, D. W., 2003, In: Geostandards and Geoanalytical Research. 27, p. 59-66

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

  42. Published

    A shear zone related greenstone belt hosted gold mineralization in the Archean of West Greenland. a petrographic and combined Pb and Rb-Sr isotope geochemical characterization

    Juul-Pedersen, A., Frei, Robert, Appel, P. W. U., Persson, M. & Konnerup-Madsen, J., 2007, In: Ore Geology Reviews. 32, p. 20-36

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

  43. Published

    Origin and metallogenetic significance of the Tertiary Stratoni "Granodiorite", Chalkidiki, N. Greece: isotopic and chemical evidence

    Kalogeropoulos, S. I., Frei, Robert, Nikolaou, M. & Gerouki, F., 1990, In: Bulletin of the Geological Society of Greece. 26, p. 23-38

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

  44. Published

    Granites and granites in the East Greenland Caledonides

    Kalsbeek, F., Higgins, A. K., Jepsen, H. F., Frei, Robert & Nutman, A. P., 2008, The Greenland Caledonides - evolution of the northeast margin of Laurentia. Higgins, A. K., Gilotti, J. A. & Smith, M. P. (eds.). Boulder, Colo.: Geological Society, p. 227-249 (Memoir / Geological Society of America; No. 202).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  45. Published

    Geochemistry of Precambrian sedimentary rocks used to solve stratigraphical problems: An example from the Neoproterozoic Volta basin, Ghana

    Kalsbeek, F. & Frei, Robert, 2010, In: Precambrian Research. 176, 1-4, p. 65-76 12 p.

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

  46. Published

    The Mesoproterozoic Midsommersø dolerites and associated intrusions, North Greenland: crustal melting, contamination and hydrothermal alteration

    Kalsbeek, F. & Frei, Robert, 2006, In: Contributions to Mineralogy and Petrology. 152, p. 89-110

    Research output: Contribution to journal › Journal article › Research

  47. Published

    Polyorogenic history of the East Greenland Caledonides

    Kalsbeek, F., Thrane, K., Higgins, A. K., Jepsen, H. F. & Frei, Robert, 2008, The Greenland Caledonides - evolution of the northeast margin of Laurentia. Higgins, A. K., Smith, M. P. & Gilotti, J. A. (eds.). Boulder, Colo.: The Geological Society of America, p. 55-72 (Memoir / Geological Society of America; No. 202).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  48. Published

    Enigmatic 1146 +/- 4 Ma old granite in the southeastern rim of the West African craton, now part of the Dahomeyan orogenic belt in Ghana

    Kalsbeek, F., Frei, D., Schersten, A., Frei, Robert, Gerdes, A. & Kalvig, P., 2020, In: Journal of African Earth Sciences. 167, 14 p., 103814.

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

  49. Published

    Geochronology of granitoid and metasedimentary rocks from Togo and Benin, West Africa: comparisons with NE Brazil

    Kalsbeek, F., Affaton, P., Ekwueme, B., Frei, Robert & Thrane, K., 2012, In: Precambrian Research. 196-197, p. 218-233 16 p.

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

  50. Published

    Pitfalls and new approaches in granulite chronometry: an example from the Limpopo Belt, Zimbabwe

    Kamber, B. S., Frei, Robert, Gibb, A. J. & O’Nions, R. K., 1998, In: Precambrian Research. 91, 3/4, p. 269-285

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

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