Robert Frei

Robert Frei

Professor

ORCID: 0000-0001-7708-9881

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  1. Published

    Mono-sample pb-pb dating of pyrrhotite and tourmaline: Proterozoic vs. Archean intracratonic gold mineralization: reply

    Frei, Robert & Pettke, T., 1 Dec 1997, In: Geology. 25, 7, p. 670-671 2 p.

    Research output: Contribution to journal › Letter › Research › peer-review

  2. Published

    A multi-isotopic and trace element investigation of the Cretaceous-Tertiary boundary layer at Stevns Klint, Denmark - inferences for the origin and nature of siderophile and lithophile element geochemical anomalies

    Frei, Robert & Frei, K. M., 2002, In: Earth and Planetary Science Letters. 203, p. 691-708

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

  3. Published

    Re-Os, Sm-Nd isotope- and REE systematics on komatiites and pilow basalts from the Earth's oldest oceanic crustal fragments (Isua Supracrustal Belt, W Greenland)

    Frei, Robert & Kastbjerg Jensen, B., 2003, In: Chemical Geology. 196, p. 163-191

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

  4. Published

    Chromium isotope fractionation during oxidative weathering - implications from the study of a Paleoproterozoic (ca. 1.9 Ga) paleosol, Schreiber Beach, Ontario, Canada

    Frei, Robert & Polat, A., 2013, In: Precambrian Research. 224, p. 434-453 20 p.

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

  5. Published

    A pre-3.74 Ga old tectono-metamorphic event in the outer Isua (Western Greenland) supracrustal belt: evidence from Pb stepwise leaching of sulfide-bearing quartz-tourmaline veins.

    Frei, Robert, Rosing, Minik Thorleif, Krogstad, E. J., Storey, M., Ulfbeck, D. G. & Albarede, F., 1998, In: EOS : Transactions. 1998 Fall Meeting 79, 45 Suppl., p. 932

    Research output: Contribution to journal › Journal article › Research

  6. Published

    Single mineral Pb-Pb dating

    Frei, Robert & Kamber, B. S., 1995, In: Earth and Planetary Science Letters. 129, p. 261-268

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

  7. Published

    The extent of inter-mineral isotope equilibrium: a systematic bulk U-Pb step leaching (PbSL) isotope study of individual minerals from the Tertiary granite of Jerissos (northern Greece)

    Frei, Robert, 1996, In: European Journal of Mineralogy. 8, p. 1175-1189

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

  8. Published

    Search for traces of the late heavy bombardment on Earth - Results from high precision chromium isotopes.

    Frei, Robert & Rosing, Minik Thorleif, 2005, In: Earth and Planetary Science Letters. 236, p. 28-40

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

  9. Published

    Apparent controversies of Pb-Pb and Sm-Nd isotope systematics in the Archean Isua (West Greenland) BIF's: preservation of primary signatures vs. secondary disturbances

    Frei, Robert, Bridgewater, D. & Rosing, Minik Thorleif, 1997, In: EOS : Transactions. 78, 46, p. F830

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

  10. Published

    Mono-sample Pb-Pb dating of pyrrhotite and tourmaline: Archean vs. Proterozoic gold mineralization in Zimbabwe

    Frei, Robert & Pettke, T., 1996, In: Geology. 24, p. 823-826

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

  11. Published

    Source heterogeneity for the major components of ~3.7 Ga banded iron formations (Isua Greenstone Belt, Western Greenland): tracing the nature of interacting water masses in BIF formation

    Frei, Robert & Polat, A., 2006, In: Earth and Planetary Science Letters. 253, p. 266-281

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

  12. Published

    Sulfur in bulk rock and igneous apatite: tracing mineralized and barren trends in intrusions

    Frei, Robert, 1996, In: Schweizerische Mineralogische und Petrographische Mitteilungen. 127, p. 57-73

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

  13. 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

  14. Published

    Chromium isotopes in the marine environment through time: a suitable paleoredox tracer?

    Frei, Robert, 2008, Geochim. Cosmochim.: Acta. Vol. 72/12S. p. A283

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

  15. Published

    Blyisotoper - Eksempler på deres anvendelse

    Frei, Robert & Stendal, H., 2003, In: Varv. 1, p. 23-32

    Research output: Contribution to journal › Journal article › Research

  16. Published

    Hydrothermal - metasomatic and tectono-metamorphic processes in the Isua Supracrustal Belt (West Greenland): a multi-isotopic investigation of their effects on the Earth's oldest oceanic crustal sequence

    Frei, Robert, Rosing, Minik Thorleif, Waight, Tod & Ulfbeck, D. G., 2002, In: Geochimica et Cosmochimica Acta. 66, p. 467-486

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

  17. Published

    Dating a Variscan pressure-temperature loop with staurolite

    Frei, Robert, Biino, G. G. & Prospert, C., 1995, In: Geology. 23, p. 1095-1098

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

  18. Published

    Blyisotoper og deres anvendelse

    Frei, Robert, 2002, In: Varv. 4, p. 17-26

    Research output: Contribution to journal › Journal article › Research

  19. Published

    Geochronology of the late Archean Razi and Chilimanzi suites of granites in Zimbabwe: implications for the late Archean tectonics of the Limpopo Belt and Zimbabwe Craton

    Frei, Robert, Blenkinsop, T. G. & Schönberg, R., 1999, In: South African Journal of Geology. 102, p. 55-63

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

  20. Published

    Re-Os, Sm-Nd isotope- and REE systematics on ultramafic rocks and pillow basalts from the Earth's oldest oceanic crustal fragments (Isua Supracrustal Belt and Ujaragssuit nunât area, W Greenland)

    Frei, Robert & Jensen, B. K., 15 May 2003, In: Chemical Geology. 196, 1-4, p. 163-191 29 p.

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

  21. Published

    A new Pb-dating technique for gold deposits: examples from Zimbabwe

    Frei, Robert, 1995.

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

  22. 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

  23. Published

    The Hadean upper mantle conundrum: Evidence for source depletion and enrichment from Sm-Nd, Re-Os, and Pb isotopic compositions in 3.71 Gy boninite-like metabasalts from the Isua Supracrustal Belt, Greenland

    Frei, Robert, Polat, A. & Meibom, A., 2004, In: Geochimica et Cosmochimica Acta. Vol. 68, p. 1645-1660

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

  24. 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

  25. Published

    The link between surface water and groundwater-based drinking water – strontium isotope spatial distribution patterns and their relationships to Danish sediments

    Frei, Robert, Frei, K. M., Kristiansen, S. M., Jessen, Søren, Schullehner, J. & Hansen, B., 1 Oct 2020, In: Applied Geochemistry. 121, 11 p., 104698.

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

  26. Published

    Single mineral dating by the Pb-Pb step-leaching method, assessing the mechanism

    Frei, Robert, Villa, I. M., Nägler, T. F., Kramers, J. D., Przybylowicz, W. J., Prozesky, V. M., Hofmann, B. A. & Kamber, B. S., 1997, In: Geochimica et Cosmochimica Acta. 61, p. 393-414

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

  27. Published

    Os isotope heterogeneity of the convecting upper mantle: The Mayari- Btacoa Ophiolitic Belt (eastern cuba)

    Frei, Robert, Gervilla, F., Meibom, A. & Proenza, J. A., 2006, In: Earth and Planetary Science Letters. 241, p. 466-476

    Research output: Contribution to journal › Journal article › Research

  28. Published

    Surface water oxygenation and bioproductivity – A link provided by combined chromium and cadmium isotopes in Early Cambrian metalliferous black shales (Nanhua Basin, South China)

    Frei, Robert, Lehmann, B., Xu, L. & Frederiksen, J. A., 5 Oct 2020, In: Chemical Geology. 552, 16 p., 119785.

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

  29. Published

    Commentary: Strontium Is Released Rapidly From Agricultural Lime–Implications for Provenance and Migration Studies

    Frei, Robert, 2021, In: Frontiers in Ecology and Evolution. 9, 4 p., 681896.

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

  30. Published

    Chromium isotopes in 3.8 Ga metamorphosed sediments: no indications for cosmic components associated with an early meteorite bombardment of the Earth

    Frei, Robert & Rosing, Minik Thorleif, 2003.

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

  31. 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

  32. Published

    Mono-sample Pb-Pb dating of pyrrhotite and tourmaline: Archean vs. Proterozoic gold mineralization in Zimbabwe. A Reply

    Frei, Robert & Pettke, T., 1997, In: Geology. 27, p. 670-671

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

  33. Published

    Controversial Pb-Pb and Sm-Nd isotope results in the early Archean Isua (West Greenland) oxide iron formation: Preservation of primary signatures versus secondary disturbances.

    Frei, Robert, Bridgewater, D., Rosing, Minik Thorleif & Stecher, O., 1999, In: Geochimica et Cosmochimica Acta. 63, p. 473-488

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

  34. Published

    Lead-isotope and trace-element geochemistry of Paleoproterozoic metasedimentary rocks in the Lead and Rochford basins (Black Hills, South Dakota, USA): implications for genetic models, mineralization ages, and sources of ore leads for the Homestake gold deposit

    Frei, Robert, Dahl, P. S., Frandsson, M. M., Jensen, L. A., Hansen, T. R., Terry, M. P. & Frei, Karin Margarita, 2009, In: Precambrian Research. 172, 1-2, p. 1-24

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

  35. Published

    The least radiogenic terrestrial leads: implications for the early Archean crustal evolution and hydrothermal-metasomatic processes in the Isua Supracrustal Belt (West Greenland)

    Frei, Robert & Rosing, Minik Thorleif, 2001, In: Chemical Geology. 181, p. 47-66

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

  36. Published

    A systematic look at chromium isotopes in modern shells - implications for paleo-environmental reconstructions

    Frei, Robert, Paulukat, C., Bruggmann, S. & Klaebe, R. M., 2018, In: Biogeosciences. 15, 16, p. 4905-4922 18 p.

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

  37. Published

    Behaviour of Re-Os, Sm-Nd, and U-Pb systematics in hydrothermal ores. WRI-9

    Frei, Robert, Nägler, T. F., Schönberg, R. & Kramers, J. D., 1998, Water-Rock Interaction, Balkema/Rotterdam/Brookfield. Arehart, G. B. & Hulston, J. R. (eds.). p. 541-544

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

  38. 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

  39. Published

    Re-Os, Sm-Nd, U-Pb and stepwise Pb leaching isotope systematics in shear-zone hosted gold mineralization: genetic tracing and age constraints of crustal hydrothermal activity

    Frei, Robert, Nägler, T. F., Schönberg, R. & Kramers, J. D., 1998, In: Geochimica et Cosmochimica Acta. 62, p. 1925-1936

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

  40. Published

    Os isotope heterogeneity of the upper mantle: Evidence from the Mayarí-Baracoa ophiolite belt in eastern Cuba

    Frei, Robert, Gervilla, F., Meibom, A., Proenza, J. A. & Garrido, C. J., 31 Jan 2006, In: Earth and Planetary Science Letters. 241, 3-4, p. 466-476 11 p.

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

  41. Published

    Inherited crustal components in the porphyry copper style mineralization of Skouries, Northern Greece: implications from combined Pb-Sr isotopic results

    Frei, Robert, 1993, In: Schweizerische Mineralogische und Petrographische Mitteilungen.

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

  42. Published

    Efficient N-TIMS Re-isotope measurements on outgassed Ta filaments: very low filament blanks determined by a "standard addition" approach

    Frei, Robert, Nägler, T. F. & Meisel, T., 1996, In: International Journal of Mass Spectrometry. 76, p. L7-L10

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

  43. Published

    The geographic distribution of Sr isotopes from surface waters and soil extracts over the island of Bornholm (Denmark) – A base for provenance studies in archaeology and agriculture

    Frei, Robert & Frei, Karin Margarita, 2013, In: Applied Geochemistry. 38, p. 147-160 14 p.

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

  44. Published

    Efficient N-TIMS rhenium isotope measurements on outgassed tantalum filaments: Very low filament blanks determined by a "standard addition" approach

    Frei, Robert, Nägler, T. F. & Meisel, T., 1 Jan 1996, In: International Journal of Mass Spectrometry and Ion Processes. 153, 2-3, p. L7

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

  45. Published

    Chromium isotopes in carbonates — A tracer for climate change and for reconstructing the redox state of ancient seawater

    Frei, Robert, Gaucher, C., Døssing, L. N. & Sial, A. N., 30 Oct 2011, In: Earth and Planetary Science Letters. 312, p. 114–125 12 p.

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

  46. Published

    The Hadean upper mantle conundrum: Evidence for source depletion and enrichment from Nd and Os isotopic compositions in 3.71 Gy boninite-like metabasalts from the Isua Supracrustal Belt

    Frei, Robert, Polat, A. & Meibom, A., 2004, In: Geochimica et Cosmochimica Acta. 11S, p. A744

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

  47. Published

    Fluctuations in late Neoproterozoic atmospheric oxidation — Cr isotope chemostratigraphy and iron speciation of the late Ediacaran lower Arroyo del Soldado Group (Uruguay)

    Frei, Robert, Gaucher, C., Stolper, D. & Canfield, D. E., 2013, In: Gondwana Research. 23, 2, p. 797-811 15 p.

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

  48. 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

  49. Published

    Earth´s oldest BIFs (Isua, W Greenland): constraints from Ge/Si ratios, REE systematics and Sm-Nd and Pb isotopes for differentinteracting water masses during their formation

    Frei, Robert & Polat, A., 2008, In: Geochim. Cosmochim.. Acta 71, Supplement 1, p. A296

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

  50. 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

  51. 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

  52. 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

  53. 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

  54. 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

  55. 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

  56. 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

  57. 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

  58. 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

  59. 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

  60. 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

  61. 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

  62. 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

  63. 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

  64. 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

  65. 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

  66. 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

  67. 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

  68. 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

  69. 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

  70. 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

  71. 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

  72. 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

  73. 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

  74. 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

  75. 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

  76. 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

  77. 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

  78. 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

  79. 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

  80. 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

  81. 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

  82. 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

  83. 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

  84. 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

  85. 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

  86. 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

  87. 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

  88. 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

  89. 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

  90. 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

  91. 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

  92. 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

  93. 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

  94. 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

  95. 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

  96. 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

  97. 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

  98. 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

  99. 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

  100. Published

    Origin of hexavalent chromium in groundwater: the example of Sarigkiol Basin, Northern Greece

    Kazakis, N., Kantiranis, N., Kalaitzidou, K., Kaprara, M., Mitrakas, M., Frei, Robert, Vargemezis, G., Tsourlos, P., Zouboulis, A. & Filippidis, A., 2017, In: Science of the Total Environment. 593-594, p. 552-566 15 p.

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

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