Robert Frei

Robert Frei

Professor

ORCID: 0000-0001-7708-9881

Publication year:
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1 - 25 out of 379Page size: 25
  1. 2024
  2. Published

    Chemostratigraphy of early Ediacaran carbonate rocks of the Cachoeirinha Group (Northeastern Brazil): Implications for paleonvironmental conditions and atmospheric oxygenation

    Usma, C. D., Sial, A. N., Ferreira, V. P., Gaucher, C. & Frei, Robert, 2024, In: Journal of South American Earth Sciences. 134, 17 p., 104744.

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

  3. Published

    Combined cadmium and chromium isotopes record a collapse of bioproductivity across the Cretaceous—Paleogene boundary in the Danish basin

    Frederiksen, Jesper Allan, Thibault, Nicolas Rudolph, Gilleaudeau, G. J., Bjerrum, Christian J., Moreau, J. & Frei, Robert, 2024, In: Chemical Geology. 654, 122058.

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

  4. Published

    Geochemistry of Archean anorthosite-bearing layered intrusions

    Sotiriou, P., Polat, A., Kusky, T., Windley, B. F., Frei, Robert & Yang, X., 2024, In: Earth-Science Reviews. 249, 25 p., 104654.

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

  5. 2023
  6. Published

    Corg, N and Hg-isotopes and Hg chemostratigraphy in the Late Ordovician–early Silurian Transition, Argentine Precordillera

    Sial, A. N., Chen, J., Peralta, S., Gaucher, C., Korte, Christoph, Frei, Robert, Ferreira, V. P., Drude, L., Lacerda, D., Barbosa, J. A., Pereira, N. S., Ricardo, P., Riedel, R. & Gomez, J. C., 2023. 1 p.

    Research output: Contribution to conference › Poster › Research › peer-review

  7. Published

    Chromium isotopes track redox fluctuations in Proterozoic successions of the Chapada Diamantina, São Francisco craton, Brazil

    Caxito, F. A., Frei, Robert, Sial, A. N., Uhlein, G. J., de Moura, W. A. L., Pereira, E. & Rodrigues, R., 2023, In: Geology. 51, 1, p. 69-74

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

  8. Published

    Geological processes defining the formation of plumasite-type corundum in the Paleoproterozoic Isertoq Terrane, South-East Greenland

    Poulsen, Majken Djurhuus, Keulen, N., van Hinsberg, V. J., Kolb, J., Frei, Robert & Thomsen, T. B., 2023, In: Precambrian Research. 385, 23 p., 106940.

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

  9. Published

    Release and mobility of hexavalent chromium in contaminated soil with chemical factory waste: Experiments, Cr isotope analysis and reactive transport modeling

    Ceballos, E., Cama, J., Soler, J. M. & Frei, Robert, 2023, In: Journal of Hazardous Materials. 451, 15 p., 131193.

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

  10. Published

    Strong positive fractionation of chromium isotopes in iron formation of the Jacadigo Group (Brazil) – A link to enhanced atmospheric oxygenation during the Late Neoproterozoic

    Árting, T. B., Boggiani, P. C., Gaucher, C., Fernandes, H. A. & Frei, Robert, 2023, In: Gondwana Research. 124, p. 39-60

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

  11. Published

    Tales from Ginderup Mound in Thisted County, Denmark: Further Investigations of Female Mobility in the Nordic Bronze Age

    Reiter, S. S., Møller, N. A., Jørkov, M L S, Bech, J., Frei, Robert & Frei, Karin Margarita, 2023, In: Danish Journal of Archaeology. 12, 1, p. 1-25

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

  12. 2022
  13. Published

    High-resolution Ge-Si-Fe, Cr isotope and Th-U data for the Neoarchean Temagami BIF, Canada, suggest primary origin of BIF bands and oxidative terrestrial weathering 2.7 Ga ago

    Bau, M., Frei, Robert, Garbe-Schönberg, D. & Viehmann, S., 1 Jul 2022, In: Earth and Planetary Science Letters. 589, 9 p., 117579.

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

  14. Published

    Cadmium isotopes in Late Ediacaran–Early Cambrian Yangtze Platform carbonates – reconstruction of bioproductivity in ambient surface seawater

    Frederiksen, Jesper Allan, Wei, W., Rugen, E. J., Ling, H. & Frei, Robert, 30 May 2022, In: Palaeogeography, Palaeoclimatology, Palaeoecology - An International Journal for the Geo-Sciences. 601, 18 p., 111096.

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

  15. Published

    The proper choice of proxies for relevant strontium isotope baselines used for provenance and mobility studies in glaciated terranes – Important messages from Denmark

    Frei, Robert, Frank, A. B. & Frei, K. M., 15 May 2022, In: Science of the Total Environment. 821, 13 p., 153394.

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

  16. Published

    Geochemical signatures of soapstones from the Nuuk area, southern West Greenland – their use for fingerprinting of archaeological artefacts

    Keulen, N., Poulsen, M. D. & Frei, Robert, Apr 2022, In: Journal of Archaeological Science. 140, 15 p., 105552.

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

  17. 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

  18. Published

    Investigating sheep mobility at Montale, Italy, through strontium isotope analyses

    Sabatini, S., Frei, K. M., De Grossi Mazzorin, J., Cardarelli, A., Pellacani, G. & Frei, Robert, Feb 2022, In: Journal of Archaeological Science: Reports. 41, 12 p., 103298.

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

  19. Published

    A multi-proxy, bioavailable strontium isotope baseline for southern Almería, Spain: Using modern environmental samples to constrain the isotopic range of bioavailable strontium

    Frank, A. B., Frei, Robert, Kristiansen, K. & Frei, Karin Margarita, 2022, In: Applied Geochemistry. 144, 14 p., 105405.

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

  20. Published

    Anatomy of a Neoarchean continental arc-backarc system in the Cross Lake-Pipestone Lake region, northwestern Superior Province, Canada

    Polat, A., Frei, Robert, Deng, H., Yang, X. & Sotiriou, P., 2022, In: Precambrian Research. 370, 34 p., 106556.

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

  21. 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

  22. Published

    Cadmium isotopes in Bahamas platform carbonates: A base for reconstruction of past surface water bioproductivity and their link with chromium isotopes

    Frederiksen, Jesper Allan, Klaebe, R. M., Farkas, J., Swart, P. K. & Frei, Robert, 2022, In: Science of the Total Environment. 806, 2, 17 p., 150565.

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

  23. Published

    Constraining a bioavailable strontium isotope baseline for the Lake Garda region, Northern Italy: A multi-proxy approach

    Ladegaard-Pedersen, P., Frei, Robert, Frank, A. B., Saracino, M., Zorzin, R., Martinelli, N., Kaul, F., Kristiansen, K. & Frei, K. M., 2022, In: Journal of Archaeological Science: Reports. 41, 15 p., 103339.

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

  24. Published

    Early Cambrian highly metalliferous black shale in South China: Cu and Zn isotopes and a short review of other non-traditional stable isotopes

    Lehmann, B., Pašava, J., Šebek, O., Andronikov, A., Frei, Robert, Xu, L. & Mao, J., 2022, In: Mineralium Deposita. 57, 7, p. 1167–1187

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

  25. Published

    Low oxygen seawater and major shifts in the paleoenvironment towards the terminal Ediacaran: Insights from the Portfjeld Formation, North Greenland

    Rugen, E. J., Ineson, J. R. & Frei, Robert, 2022, In: Precambrian Research. 379, 19 p., 106781.

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

  26. Published

    Petrogenesis of the late Archean Pillow Basalts from the Chitradurga greenstone belt, Western Dharwar Craton (southern India)

    Rose, R., Mukherjee, R., Frei, Robert, Mondal, S. K. & Lingadevaru, M., 2022, In: Journal of Earth System Science. 131, 2, 26 p., 95.

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

  27. Published

    Strontium isotope ratios from the Swabo-Franconian Basin (Germany) and a new compilation of marine 87Sr/86Sr signatures for the Upper Sinemurian to Toarcian: global uniformity and driving forces for marine 87Sr/86Sr

    Frederiksen, Jesper Allan, Ullmann, C. V., Frei, Robert & Korte, Christoph, 2022, In: Newsletters on Stratigraphy. 55, 3, p. 311–331

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

  28. 2021
  29. Published

    Goldilocks at the dawn of complex life: mountains might have damaged Ediacaran–Cambrian ecosystems and prompted an early Cambrian greenhouse world

    Caxito, F., Lana, C., Frei, Robert, Uhlein, G. J., Sial, A. N., Dantas, E. L., Pinto, A. G., Campos, F. C., Galvão, P., Warren, L. V., Okubo, J. & Ganade, C. E., Dec 2021, In: Scientific Reports. 11, 1, 15 p., 20010.

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

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ID: 11756