Robert Frei

Robert Frei

Professor

ORCID: 0000-0001-7708-9881

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  1. Published

    Molybdenum evidence for expansive sulfidic water masses in similar ∼ 750 Ma oceans

    Dahl, Tais Wittchen, Canfield, D. E., Rosing, Minik Thorleif, Frei, Robert, Gordon, G. W., Knoll, A. H. & Anbar, A. D., 2011, In: Earth and Planetary Science Letters. 311, 3-4, p. 264-274

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

  2. Published

    Molybdenum evidence for expansive sulfidic water masses in ~ 750 Ma oceans

    Dahl, T. W., Canfield, D. E., Rosing, Minik Thorleif, Frei, Robert, Gordon, G. W., Knoll, A. H. & Anbar, A. D., 2011, In: Earth and Planetary Science Letters. 311, 3-4, p. 264-274 11 p.

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

  3. Published

    Molybdenum isotope variations in a redox-stratified lake: Removal mechanism and preservation in euxinic sediments

    Dahl, Tais Wittchen, Anbar, A. D., Gordon, G. W., Rosing, Minik Thorleif, Frei, Robert & Canfield, D. E., 2008, Geochim. Cosmochim. Acta,. Vol. 72/12S. p. A194

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

  4. 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

  5. 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

  6. Published

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

    Frei, Robert & Pettke, T., 1 Jan 1996, In: Geology. 24, 9, p. 823-826 4 p.

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

  7. 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

  8. Published

    Multi-isotope proveniencing of human remains from a Bronze Age battlefield in the Tollense Valley in northeast Germany

    Price, T. D., Frei, Robert, Brinker, U., Lidke, G., Terberger, T., Frei, K. M. & Jantzen, D., 2019, In: Archaeological and Anthropological Sciences. 11, 1, p. 33-49 17 p.

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

  9. Published

    Multiproxy geochemical and isotope stratigraphy records of a Neoproterozoic Oxygenation Event in the Ediacaran Sete Lagoas cap carbonate, Bambui Group, Brazil

    Caxito, F. A., Frei, Robert, Uhlein, G. J., Dias, T. G., Árting, T. B. & Uhlein, A., 2018, In: Chemical Geology. 481, p. 119-132 14 p.

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

  10. Published

    Multiproxy isotope constraints on ocean compositional changes across the late Neoproterozoic Ghaub glaciation, Otavi Group, Namibia

    Rodler, A., Frei, Robert, Gaucher, C., Korte, Christoph, Rosing, Salik Anders & Germs, G. J. B., 2017, In: Precambrian Research. 298, p. 306-324 19 p.

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

  11. Published

    Nd and Pb isotopes of Mn/Fe precipitates of the Baltic Sea: climate change versus pollution

    Bock, B., Liebetrau, V., Eisenhauer, A., Frei, Robert, Kronz, A. & Leipe, T., 2004, In: Geochimica et Cosmochimica Acta. 11S, p. A480

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

  12. Published

    Nd isotope signature of Holocene Baltic Mn/Fe precipitates as monitor of climate change during the Little Ice Age

    Bock, B., Liebetrau, V., Eisenhauer, A., Frei, Robert & Leipe, T., 2005, In: Geochimica et Cosmochimica Acta. Vol. 69, p. 2253-2263

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

  13. Published

    Nd-Sr-Pb isotopic constraints on metal and fluid sources in W-Sb-Au mineralization at Woxi and Liaojiaping (Western Hunan, China)

    Peng, B. & Frei, Robert, 2004, In: Mineralium Deposita. Vol. 39, p. 313-327

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

  14. Published

    Nd-Sr-Pb isotopic geochemistry of scheelite from the Woxi W-Sb-Au deposit, Eastern Hunan: implicarions for sources and evolution of ore-forming fluids

    Peng, B., Frei, Robert & Xianglin, T. T., 2006, In: Acta Geologica Sinica - English Edition. 80, p. 561-570

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

  15. Published

    Neoproterozoic to Early Palaeozoic events in the Sierra de San Luis: implications for the Famatinian geodynamics in the Eastern Sierras Pampeanas (Argentina)

    Steenken, A., Siegesmund, S., Lopez de Luchi, M., Frei, Robert & Wemmer, K., 2006, In: Geological Society of London Special Publications. 163, p. 965-982

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

  16. Published

    New 207Pb-206Pb and 40Ar-39Ar ages from SW Montana, USA: constraints on the Proterozoic and Archean tectonic and depositional history of the Wyoming Province

    Roberts, H., Dahl, P., Kelly, S. & Frei, Robert, 2002, In: Precambrian Research. 117, p. 119-143

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

  17. Published

    New Lu-Hf and Pb-Pb age constraints on the earliest animal fossils

    Barfod, G. H., Albarède, F., Knoll, A. H., Xiao, S., Télouk, P., Frei, Robert & Baker, J., 13 Aug 2002, In: Earth and Planetary Science Letters. 201, 1, p. 203-212 10 p.

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

  18. Published

    New age (ca. 2970 Ma), mantle source composition and geodynamic constraints on the Archean Fiskenæsset anorthosite complex, SW Greenland.

    Polat, A., Frei, Robert, Scherstén, A. & Appel, P. W. U., 2010, In: Chemical Geology. 277, 1-2, p. 1-20

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

  19. 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

  20. Published

    Noble gases, K, U, Th, and Pb in native gold

    Eugster, O., Niedermann, S., Thalmann, C., Frei, Robert, Kramers, J. D., Krähenbühl, U., Liu, Y. Z., Hofmann, B., Boer, R. H., Reimold, W. U. & Bruno, L., 1995, In: Journal of Geophysical Research: Solid Earth. B12, p. 24’677-24’689

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

  21. Published

    Ocean anoxia and large igneous provinces

    Ruhl, M., Bjerrum, Christian J., Canfield, D. E., Korte, Christoph, Stemmerik, L. & Frei, Robert, 2013, In: Geophysical Research Abstracts. 15, 1 p.

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

  22. 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

  23. Published

    On the formation of peridotite-derived Os-rich PGE alloys

    Brenker, F. E., Meibom, A. & Frei, Robert, 2003, In: American Mineralogist. 88, p. 1731-1740

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

  24. Published

    On the valency state of radiogenic lead in zircon and its consequences

    Kramers, J., Frei, Robert, Newville, M., Kober, B. & Villa, I., 2009, In: Chemical Geology. 261, p. 4-11

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

  25. Published

    Onset of main Phanerozoic marine radiation sparked by emerging Mid Ordovician icehouse

    Rasmussen, Christian Mac Ørum, Ullmann, C. V., Jakobsen, K. G., Lindskog, A., Hansen, J., Hansen, T., Eriksson, M. E., Dronov, A., Frei, Robert, Korte, Christoph, Nielsen, Arne Thorshøj & Harper, D. A. T., 2016, In: Scientific Reports. 6, 9 p., 18884.

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

  26. 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

  27. Published

    Origin of Mesoarchaean arc-related rocks with boninite/komatiite affinities from southern West Greenland

    Szilas, Kristoffer, Næraa, T., Scherstén, A., Stendal, H., Frei, Robert, van Hinsberg, V. J., Kokfelt, T. F. & Rosing, Minik Thorleif, 2012, In: Lithos. 144-145, p. 24-39 16 p.

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

  28. 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

  29. Published

    Origin of the ultrapotassic volcanics within the Late Cretaceous to early Tertiary Ulukisla Basin, Central Anatolia, Turkey. 14th Annual V.M. Goldschmidt Conference, Copenhagen, Denmark, June 7-12

    Alpaslan, M., Frei, Robert, Kurt, M. A., Temel, A. & Boztug, D., 2004, In: Geochimica et Cosmochimica Acta. Vol. 68/11S, p. A605

    Research output: Contribution to journal › Journal article › Research

  30. Published

    Origins of inhabitants from the 16th century Sala (Sweden) silver mine cemetery – a lead isotope perspective

    Price, T. D., Frei, Robert, Bäckström, Y., Frei, K. M. & Ingvarsson-Sundstrom, A., 2017, In: Journal of Archaeological Science. 80, p. 1-13 13 p.

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

  31. 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

  32. 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

  33. Published

    Os isotope systematics of Mesoarchean chromitite - PGE deposits in the Singhbhum Craton (India): implications for the evolution of subcontinental lithospheric mantle

    Mondal, S. K., Frei, Robert & Ripley, E. M., 2007, In: Chemical Geology. 244, p. 391-408

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

  34. Published

    Osmium and helium isotopic evidence against the standard stratification model of Earth's mantle

    Meibom, A., Anderson, D. L., Sleep, N. H., Frei, Robert, Chamberlain, C. P., Hren, M. T. & Wooden, J. L., 2003, In: Earth and Planetary Science Letters. 208, p. 197-204

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

  35. Published

    Osmium and lead isotopes of rare OsIrRu minerals: A core-mantle boundary derivation?

    Bird, J. M., Meibom, A., Frei, Robert & Nägler, T. F., 1999, In: Earth and Planetary Science Letters. 170, p. 83-92

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

  36. Published

    Osmium and lead isotopes of rare OsIrRu minerals: A core-mantle boundary derivation?

    Bird, J. M., Meibom, A., Frei, Robert & Nägler, T. F., 1998, In: EOS : Transactions. v.79/45, p. F966

    Research output: Contribution to journal › Journal article › Research

  37. 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

  38. Published

    Osmium isotopic compositions of Os-rich platinum group element alloys from the Klamath and Siskiyou Mountains

    Meibom, A., Frei, Robert & Sleep, N. H., 10 Feb 2004, In: Journal of Geophysical Research: Solid Earth. 109, 2

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

  39. Published

    Osmium isotopic compositions of Os-rich platinum group element alloys from the Klamath and Siskiyou Mountains, USA

    Meibom, A., Frei, Robert & Sleep, N. H., 2004, In: Journal of Geophysical Research - Oceans. Vol. 109, p. B02203

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

  40. 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

  41. Published

    Oxidative release of chromium from Archean ultramafic rocks, its transport and environmental impact – A Cr isotope perspective on the Sukinda valley ore district (Orissa, India)

    Paulukat, C. S., Døssing, L. N., Mondal, S. K., Vögelin, A. R. & Frei, Robert, 2015, In: Applied Geochemistry. 59, p. 125-138

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

  42. Published

    Oxygen and carbon isotope and Sr/Ca signatures of high-latitude Permian to Jurassic calcite fossils from New Zealand and New Caledonia

    Ullmann, C. V., Campbell, H. J., Frei, Robert & Korte, Christoph, 1 Oct 2016, In: Gondwana Research. 38, p. 60-73

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

  43. 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

  44. Published

    Oxygenation variations in the atmosphere and shallow seawaters of the Yangtze Platform during the Ediacaran Period: Clues from Cr-isotope and Ce-anomaly in carbonates

    Wei, W., Frei, Robert, Gilleaudeau, G. J., Li, D., Wei, G., Chen, X. & Ling, H., 2018, In: Precambrian Research. 313, p. 78-90 13 p.

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

  45. Published

    Paleo- and Neoproterozoic magmatic and tectonometamorphic evolution of the Isla Cristalina de Rivera (Nico Pérez Terrane, Uruguay)

    Oyhantçabal, P., Wagner-Eimer, M., Wemmer, K., Schulz, B., Frei, Robert & Siegesmund, S., 2012, In: International Journal of Earth Sciences. 101, 7, p. 1745-1762 18 p.

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

  46. Published

    Pan-African(?) rutile in the Yaoundé region, Cameroon

    Stendal, H., Toteu, S. F., Frei, Robert, Njel, U. O., Konnerup-Madsen, J., Bassahak, J., Penaye, J. & Nni, J., 2004, 20th Colloquium of African geology, Orleans, France, 2-7 June 2004. Abstract volume. Orleans, p. 385

    Research output: Chapter in Book/Report/Conference proceeding › Preface/postscript › Research

  47. Published

    Partial diagenetic overprint of late jurassic belemnites from New Zealand: implications for the preservation potential of δ7Li values in calcite fossils

    Ullmann, C. V., Campbell, H. J., Frei, Robert, Hesselbo, S. P., Pogge von Strandmann, P. A. E. & Korte, Christoph, 2013, In: Geochimica et Cosmochimica Acta. 120, p. 80-96 17 p.

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

  48. Published

    Pb stepwise leaching (PbSL) dating of garnet: addressing the inclusion problem

    Schaller, M., Steiner, O., Studer, I., Frei, Robert & Kramers, J. D., 1997, In: Schweizerische Mineralogische und Petrographische Mitteilungen. 77, p. 113-121

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

  49. 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

  50. Published

    Petrogenesis and geodynamic setting of the Neoarchaean Haines Gabbroic Complex and Shebandowan greenstone belt, southwestern Superior Province, Ontario, Canada

    Sotiriou, P., Polat, A. & Frei, Robert, 2019, In: Lithos. 324-325, p. 1-19 20 p.

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

  51. Published

    Petrogenesis of Delihalil Quaternary basaltic volcanism, South Anatolia, Turkey

    Temel, A., Frei, Robert, Alpaslan, M. & Kurt, M. A., 2007, In: Geochim. Cosmochim.. Acta 71, Supplement 1, p. A1012

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

  52. 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

  53. Published

    Petrogenetic and geodynamic origin of the Neoarchean Doré Lake Complex, Abitibi subprovince, Superior Province, Canada

    Polat, A., Frei, Robert, Longstaffe, F. J. & Woods, R., 2018, In: International Journal of Earth Sciences. 107, 3, p. 811-843 33 p.

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

  54. Published

    Petrologic, Geochemical and Isotopic Study of 3.1Ga Peridotite-Chromitite Suite from the Western Dharwar Craton, India: Evidence for Recycling of Oceanic Crust in the Mesoarchean

    Mondal, S. K., Mukherjee, R., Rosing, Minik Thorleif, Frei, Robert & Waight, Tod, 2008, In: EOS : Transactions. 5, 1 p.

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

  55. Published

    Petrology and geochemistry of the Tasse mantle xenoliths of the Canadian Cordillera: A record of Archean to Quaternary mantle growth, metasomatism, removal, and melting

    Polat, A., Frei, Robert, Longstaffe, F. J., Thorkelson, D. J. & Friedman, E., 2018, In: Tectonophysics. 737, p. 1-26 26 p.

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

  56. 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

  57. 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

  58. Published

    Plagiogranitic ocelli in the pillowlavas of the Eoarchean (3.7-3.8 Ga) Isua greenstone belt, SW Greenland.

    Polat, A., Appel, P. W. U. & Frei, Robert, 2007, In: Geochim. Cosmochim.. Acta 71, Supplement 1, p. A800

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

  59. 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

  60. Published

    Porphyritic syenite at Lake Mykle, the Oslo rift: a possible derivative of larvikite

    Andersen, T., Frei, Robert, Sørensen, H. & Westphal, N. L., 2004, In: Norges Geologiske Undersøkelse, Bulletin. 442, p. 23-28

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

  61. Published

    Post-collisional transition from calc-alkaline to alkaline magmatism during transcurrent deformation in the southernmost Dom Feliciano Belt (Braziliano-Pan African, Uruguay)

    Oyhantcabal, P., Siegesmund, S., Wemmer, K., Frei, Robert & Layer, P., 2007, In: Lithos. v, 98, p. 141-159

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

  62. Published

    Potential leaching of Cr(VI) from laterite mines and residues of metallurgical products (red mud and slag): an integrated approach

    Economou-Eliopoulos, M., Frei, Robert & Megremi, I., Mar 2016, In: Journal of Geochemical Exploration. 162, p. 40-49 10 p.

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

  63. Published

    Preservation potential of δ7Li values in Mesozoic calcite fossils

    Ullmann, C. V., Campbell, H. J., Frei, Robert, Hesselbo, S. P., Pogge von Strandmann, P. A. E. & Korte, Christoph, 2013, In: Mineralogical Magazine. 77, 5, p. 2376

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  64. Published

    Priscoan (4.00-4.03 Ga) orthogneisses from northwestern Canada - by S.A. Bowring and I.S. Williams (2000): discussion

    Whitehouse, M., Nägler, T. F., Moorbath, S., Kramers, J. D., Kamber, B. S. & Frei, Robert, 2001, In: Contributions to Mineralogy and Petrology. 141, p. 248-250

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

  65. Published

    Priscoan “4.00-4.03 Ga” orthogeneisses from northwestern Canada - by Samuel A. Bowring and Ian S. Williams: Discussion

    Whitehouse, M. J., Nagler, T. F., Moorbath, S., Kramers, J. D., Kambler, B. S. & Frei, Robert, 1 Jan 2001, In: Contributions to Mineralogy and Petrology. 141, 2, p. 248-250 3 p.

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

  66. Published

    Processes controlling the chromium isotopic composition of river water: constraints from basaltic river catchments

    D'Arcy, J. M., Babechuk, M. G., Døssing, L. N., Gaucher, C. & Frei, Robert, 2016, In: Geochimica et Cosmochimica Acta. Supplement. 186, p. 296-315 20 p.

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

  67. Published

    Provenance of ancient textiles: a pilot study evaluating the Sr isotope system in wool

    Frei, Karin Margarita, Frei, Robert, Mannering, U., Gleba, M., Nosch, Marie Louise Bech & Lyngstrøm, Henriette Syrach, 2009, In: Archaeometry. 51, 2, p. 252-276 25 p.

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

  68. Published

    Provenance of ancient textiles - a pilot study evaluating the strontium isotope system in wool

    Frei, Karin Margarita, Frei, Robert, Nosch, Marie Louise Bech, Mannering, U., Gleba, M. & Lyngstrøm, Henriette Syrach, 2009, In: Archaeometry. 51, 2, p. 252-276 25 p.

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

  69. Published

    Provenance of rutile from the Yaounde region, Neoproterozoic Pan-African belt in southern Cameroon (Central Africa)

    Stendal, H., Toteu, S. F., Frei, Robert, Penaye, J., Njel, U. O., Bassahak, J., Nni, J., Kankeu, B., Ngako, V. & Hell, J. V., 2006, In: Journal of African Earth Sciences. 44, p. 443-458

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

  70. Published

    Provenance of the Late Ediacaran Rocha Formation, Cuchilla Dionisio Terrane, Uruguay: Tectonic implications on the assembly of Gondwana

    Abre, P., Blanco, G., Gaucher, C., Frei, D. & Frei, Robert, 2020, In: Precambrian Research. 342, 105704.

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

  71. Published

    Provencance of the late Proterozoic to early Cambrian metaclastic sediments ot the Sierra de San Luis (Eastern Sierras Pampeanas) and Cordillera Oriental, Argentina

    Drobe, M., López de Luchi, M., Steenken, A., Frei, Robert, Naumann, R., Siegesmund, S. & Wemmer, K., 2009, In: Journal of South American Earth Sciences. 28, 3, p. 239-262

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

  72. Published

    Pulsed volcanism and rapid oceanic deoxygenation during Oceanic Anoxic Event 1a

    Bauer, K. W., Bottini, C., Frei, Robert, Asael, D., Planavsky, N. J., Francois, R., McKenzie, N. R., Erba, E. & Crowe, S. A., 2021, In: Geology. 49, 12, p. 1452-1456 5 p.

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

  73. Published

    Radiometric growth rate and Pb isotope evolution of Mn/Fe precipitates from the SW-Baltic Sea

    Liebetrau, V., Eisenhauer, T., Frei, Robert, Kronz, A., Bock, B., Hansen, B. T. & Leipe, T., 2004, In: Zeitschrift für Angewandte Geologie. special issue (Sonderheft 2), p. 177-197

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

  74. Published

    Rare earth element mineralogy and geochemistry in a laterite profile from Madagascar

    Berger, A., Janots, E., Gnos, E., Frei, Robert & Bernier, F., Feb 2014, In: Applied Geochemistry. 41, p. 218-228 11 p.

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

  75. Published

    Re-Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle

    Meibom, A., Sleep, N. H., Chamberlain, C. P., Coleman, R. G., Frei, Robert, Hren, M. & Wooden, J. L., 2002, In: Nature. 419, p. 705-708

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

  76. 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

  77. 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

  78. 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

  79. Published

    Reading the record: Understanding heterogeneity in macrofossil geochemistry

    Ullmann, C. V., Frei, Robert, Korte, Christoph & Hesselbo, S. P., 2015, p. p. 375 .

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

  80. Published

    Redox condition in the Nanhua Basin during the waning of the Sturtian glaciation: A chromium-isotope perspective

    Wei, W., Frei, Robert, Klaebe, R., Li, D., Wei, G. & Ling, H., 2018, In: Precambrian Research. 319, p. 198-210 13 p.

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

  81. Published

    Redox effect on the Cr isotope proxy: transitional signal of associated cap-carbonates, BIF and black shale, Chuos Formation (Namibia)

    Rodler, A., Frei, Robert & Gaucher, C., 2013.

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

  82. Published

    Redox fluctuations during the Ediacaran-Cambrian transition, Nanhua Basin, South China: Insights from Cr isotope and REE+Y data

    Frank, A. B., Klaebe, R. M., Xu, L. & Frei, Robert, 2019, In: Chemical Geology. 525, p. 321-333 13 p.

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

  83. Published

    Redox fluctuations in the Early Ordovician oceans: an insight from chromium stable isotopes

    D'Arcy, J. M., Gilleaudeau, G. J., Peralta, S., Gaucher, C. & Frei, Robert, 2017, In: Chemical Geology. 448, p. 1-12 12 p.

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

  84. Published

    Reduction of hexavalent chromium by ferrous iron: A process of chromium isotope fractionation and its relevance to natural environments

    Døssing, L. N., Dideriksen, K., Stipp, S. L. S. & Frei, Robert, 2011, In: Chemical Geology. 285, 1-4, p. 157-166 10 p.

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

  85. 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

  86. Published

    Remnants of arc-related Mesoarchaean oceanic crust in the Tartoq Group of SW Greenland

    Szilas, Kristoffer, van Hinsberg, V. J., Kisters, A. F. M., Hoffmann, J. E., Windley, B. F., Kokfelt, T. F., Scherstén, A., Frei, Robert, Rosing, Minik Thorleif & Münker, C., Mar 2013, In: Gondwana Research. 23, 2, p. 436-451 16 p.

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

  87. Published

    Removal of natural organic dyes from wool- implications for ancient textile provenance

    Frei, Karin Margarita, Vanden Berghe, I., Frei, Robert, Mannering, U. & Lyngstrøm, Henriette Syrach, 2010, In: Journal of Archaeological Science. 37, 9, p. 2136-2145 10 p.

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

  88. Published

    Reply to comments by Sanjay K. Mukhopadhyay, Sucharita Pal, J. P. Shrivastava on the paper by Sial et al. (2016) Mercury enrichments and Hg isotopes in Cretaceous-Paleogene boundary successions: Links to volcanism and palaeoenvironmental impacts. Cretaceous Research 66, 60-81

    Sial, A. N., Chen, J., Lacerda, L. D., Frei, Robert, Tewari, V. C., Pandit, M. K., Gaucher, C., Ferreira, V. P., Cirilli, S., Peralta, S., Korte, Christoph, Barbosa, J. A. & Pereira, N. S., 2017, In: Cretaceous Research. 76, p. 84-88 5 p.

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

  89. Published

    Response to "Comment on "The Nd and Hf isotopic evolution of the mantle through the Archean. Results from the Isua supracrustals, West Greenland, and from the Birimian terranes of West Africa" by Blichert-Toft et al. (1999)

    Albarede, F., Blichert-Toft, J., Frei, Robert & Rosing, Minik Thorleif, 2001, In: Geochimica et Cosmochimica Acta. 65, p. 2023-2025

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

  90. Published

    Scrambling of isotopic messages from our earliest ancestors: 13C variations in biogenic reduced carbon from the >3700 Ma Isua supracrustals, West Greenland

    Rosing, Minik Thorleif & Frei, Robert, 1999, In: Journal of Conference Abstracts. 4(1), p. 259

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

  91. 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

  92. Published

    Seawater temperature change across the Pliensbachian–Toarcian transition – new isotope data from the Aubach section in SW Germany

    Korte, Christoph, Ullmann, C. V., Frederiksen, J. A., Frei, Robert, Hougård, Iben Winther & Rizzi, Malgorzata, 2018.

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

  93. Published

    Serpentinization in the Archean and Early Phanerozoic - Insights from chromium isotope and REY systematics of the Mg-Cr hydroxycarbonate stichtite and associated host serpentinites

    Kraemer, D., Frei, Robert, Ernst, D. M., Bau, M. & Melchiorre, E., 2021, In: Chemical Geology. 565, 13 p., 120055.

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

  94. Published

    Shallow retardation of the strontium isotope signal of agricultural liming - implications for isoscapes used in provenance studies

    Frei, Robert, Frei, K. M. & Jessen, Søren, 2020, In: Science of the Total Environment. 706, 12 p., 135710.

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

  95. 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

  96. 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

  97. 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

  98. 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

  99. Published

    Sr, Pb and Nd isotope studies and their bearing on the petrogenesis of the Jalor and Siwana complexes, Rajasthan, India

    Dhar, S., Frei, Robert, Kramers, J. D., Nägler, T. F. & Kochhar, N., 1996, In: Journal of the Geological Society of India. 48, 2, p. 151-160

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

  100. Published

    Sr, Pb and Nd isotope studies and their bearing on the petrogenesis of the Jalor and Siwana complexes, Rajasthan, India: A reply

    Dhar, S., Frei, Robert, Kramers, J. D., Nägler, T. F. & Kochhar, N., 1996, In: Journal of the Geological Society of India. 49, 4, p. 466-469

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

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