Robert Frei
Professor
Geology
Øster Voldgade 10
1350 København K
- Published
"U-rich Archaean sea-floor sediments from Greenland-indications of >3700 Ma Oxygenic photosynthesis"
Rosing, Minik Thorleif & Frei, Robert, 2004, In: Earth and Planetary Science Letters. 217, p. 237-244 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
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207Pb-206Pb dating of magnetite, monazite and allanite in the central and northern Nagssugtoqidian orogen, West Greenland
Stendal, H., Secher, K. & Frei, Robert, 2006, In: GEOLOGICAL SURVEY OF DENMARK AND GREENLAND BULLETIN. 11, p. 101-114Research output: Contribution to journal › Journal article › Research › peer-review
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2480 Ma mafic magmatism in the northern Black Hills, South Dakota: a new link connecting the Wyoming and Superior cratons
Dahl, P. S., Hamilton, M. A., Wooden, J. L., Foland, K. A. & Frei, Robert, 2006, In: Candian Journal of Earth Sciences. 43, p. 1579-1600Research output: Contribution to journal › Journal article › Research › peer-review
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3.9 Ga pillow basalts from Isua, Greenland: Pb isotopic evidence.
Storey, Michael, Krogstad, E. J., Frei, Robert, Albarede, F. & Rosing, Minik Thorleif, 1998, publisher. American Geophysical Union, 932 p.Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research
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40Ar/39Ar dating of exceptional concentration of metals by weathering of Precambrian rocks at the Precambrian–Cambrian boundary
Parnell, J., Mark, D. F., Frei, Robert, Fallick, A. E. & Ellam, R. M., Jun 2014, In: Precambrian Research. 246, p. 54-63 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
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A back-arc origin for the Neoarchean megacrystic anorthosite-bearing Bird River Sill and the associated greenstone belt, Bird River subprovince, Western Superior Province, Manitoba, Canada
Sotiriou, P., Polat, A., Frei, Robert, Yang, X. M. & van Vessem, J., 2019, In: International Journal of Earth Sciences. 108, 7, p. 2177-2207 31 p.Research output: Contribution to journal › Journal article › Research › peer-review
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A combined U-Pb-zircon, Pb-Pb-Nd isotope investigation on the Masirah ophiolite, Oman: indications for generation of acidic rocks by pure differentiation of a depleted mantle source
Nägler, T. F. & Frei, Robert, 1994, In: Mineralogical Magazine. p. 647-648Research output: Contribution to journal › Conference abstract in journal › Research
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A complete history of atmospheric lead deposition from 12,370 14C yr BP to the present recorded in a peat bog profile, Jura Mountains, Switzerland
Shotyk, W., Weiss, D., Appleby, P. G., Cheburkin, A. K., Frei, Robert, Gloor, M., Kramers, J. D., Reese, S. & von der Knaap, W. O., 1998, In: Science. 281/5389, p. 1635-1640Research output: Contribution to journal › Journal article › Research › peer-review
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A lead isotope study of an Archaean gold prospect in the Attu region, Nagssugtoqidian orogen, West Greenland
Stendal, H., Frei, Robert & Stensgaard, B. M., 2006, In: GEOLOGICAL SURVEY OF DENMARK AND GREENLAND BULLETIN. 11, p. 53-60Research output: Contribution to journal › Journal article › Research › peer-review
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A matter of months: high precision migration chronology of a Bronze Age female
Frei, K. M., Villa, Chiara, Jørkov, M L S, Allentoft, Morten Erik, Kaul, F., Ethelberg, P., Reiter, S. S., Wilson, A. S., Taube, M., Olsen, J., Lynnerup, Niels, Willerslev, Eske, Kristiansen, K. & Frei, Robert, 5 Jun 2017, In: PLoS ONE. 12, 6, 20 p., e0178834.Research output: Contribution to journal › Journal article › Research › peer-review
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A metamorphosed, early Archean chromitite from West Greenland: implications for the genesis of Archean anothositic chromitites
Rollinson, H., Appel, P. & Frei, Robert, 2002, In: Journal of Petrology. 43, p. 2143-2170Research output: Contribution to journal › Journal article › Research › peer-review
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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. 691-708Research output: Contribution to journal › Journal article › Research › peer-review
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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
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A new Pb-dating technique for gold deposits: examples from Zimbabwe
Frei, Robert, 1995.Research output: Contribution to conference › Conference abstract for conference › Research
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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. 717-720Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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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. 932Research output: Contribution to journal › Journal article › Research
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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. 20-36Research output: Contribution to journal › Journal article › Research › peer-review
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A strontium isotope baseline of Cyprus. Assessing the use of soil leachates, plants, groundwater and surface water as proxies for the local range of bioavailable strontium isotope composition
Ladegaard-Pedersen, P., Achilleos, M., Dörflinger, G., Frei, Robert, Kristiansen, K. & Frei, K. M., 2020, In: Science of the Total Environment. 708, 134714.Research output: Contribution to journal › Journal article › Research › peer-review
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A strontium isotope pilot study using cremated teeth from the Vollmarshausen cemetery, Hesse, Germany
Taylor, N., Frei, K. M. & Frei, Robert, 2020, In: Journal of Archaeological Science: Reports. 31, 102356.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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A transient swing to higher oxygen levels in the atmosphere and oceans at similar to 1.4 Ga
Wei, W., Frei, Robert, Klaebe, R., Tang, D., Wei, G., Li, D., Tian, L., Huang, F. & Ling, H., 2021, In: Precambrian Research. 354, 10 p., 106058.Research output: Contribution to journal › Journal article › Research › peer-review
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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. 235-244Research output: Contribution to journal › Journal article › Research › peer-review
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Algoma-type Neoproterozoic BIFs and related marbles in the Seridó Belt (NE Brazil): REE, C, O, Cr and Sr isotope evidence
Sial, A. N., Campos, M. S., Gaucher, C., Frei, Robert, Ferreira, V. P., Nascimento, R. C., Nascimento, R. C., Pereira, N. S. & Rodler, A., 2015, In: Journal of South American Earth Sciences. 61, p. 33-52 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Alkali picrites formed by melting of old Metasomatized Lithospheric Mantle: Manîtdlat Member, Vaigat Formation, Paleocene of West Greenland
Larsen, L. M., Pedersen, Asger Ken, Sundvoll, B. & Frei, Robert, 2003, In: Journal of Petrology. 44, p. 3-38Research output: Contribution to journal › Journal article › Research › peer-review
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Alkali picrites formed by melting of old metasomatised lithospheric mantle: Manîtdlat Member, Vaigat Formation, Palaeocene of West Greenland
Larsen, L. M., Sundvoll, B. & Frei, Robert, 2003, In: Journal of Petrology. 44, p. 3-38Research output: Contribution to journal › Journal article › Research › peer-review
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Alkaline lithosphere-derived lavas within the Paleocene tholeiitic flood lava succession in West Greenland
Larsen, L. M., Pedersen, Asger Ken, Sundvoll, B. & Frei, Robert, 2002, 25th Nordic Geological Winter Meeting. Reykjavik, Island, p. 122Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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An energy-dispersive Miniprobe Multielement analyzer (EMMA) for direct analysis of trace elements and chemical age dating of single mineral grains
Cheburkin, A. K., Frei, Robert & Shotyk, W., 1997, In: Chemical Geology. 135, p. 75-87Research output: Contribution to journal › Journal article › Research › peer-review
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An overview of anorthosite-bearing layered intrusions in the Archaean craton of southern West Greenland and the Superior Province of Canada: implications for Archaean tectonics and the origin of megacrystic plagioclase
Polat, A., Longstaffe, F. J. & Frei, Robert, 1 Jan 2018, In: Geodinamica Acta. 30, 1, p. 84-99 16 p.Research output: Contribution to journal › Review › Research › peer-review
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An overview of the lithological and geochemical characteristics of the Mesoarchean (ca. 3075) Ivisaartoq greenstone belt, southern West Greenland
Polat, A., Frei, Robert, Appel, P. W. U., Fryer, B., Dilek, Y. & Ordonez-Calderon, J. C., 2008, In: Geological Society of America. Special Papers. 440, p. 51-76Research output: Contribution to journal › Journal article › Research › peer-review
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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
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Anthropogenic contributions to atmospheric Hg, Pb and As deposition recorded by peat cores from southern Greenland and Denmark dated using the 14C "bomb pulse curve"
Shotyk, W., Goodsite, M. E., Roos-Barraclough, F., Frei, Robert, Heinemeier, J., Asmund, G., Lohse, C. & Hansen, T. S., 2003, In: Geochimica et Cosmochimica Acta. 67, p. 3991-4011Research output: Contribution to journal › Journal article › Research › peer-review
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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. F830Research output: Contribution to journal › Journal article › Research › peer-review
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Application of chromium stable isotopes to the evaluation of Cr(VI) contamination in groundwater and rock leachates from central Euboea and the Assopos basin (Greece)
Economou-Eliopoulos, M., Frei, Robert & Atsarou, C., Nov 2014, In: CATENA. 122, p. 216-228 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Archean and Proterozoic mineralization and tectonics at Renco Mine (Northern Marginal Zone, Limpopo Belt, Zimbabwe)
Blenkinsop, T. G. & Frei, Robert, 1996, In: Economic Geology. 91, p. 1225-1238Research output: Contribution to journal › Journal article › Research › peer-review
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Archean and Proterozoic mineralization and tectonics at Renco Mine (Northern Marginal Zone, Limpopo Belt, Zimbabwe): a reply
Blenkinsop, T. G. & Frei, Robert, 1997, In: Economic Geology. 92, p. 747-748Research output: Contribution to journal › Journal article › Research › peer-review
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Archean and proterozoic mineralization and tectonics at the Renco mine (Northern Marginal Zone, Limpopo Belt, Zimbabwe)
Blenkinsop, T. G. & Frei, Robert, 1 Dec 1996, In: Economic Geology . 91, 7, p. 1225-1238 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Archean and proterozoic mineralization and tectonics at the renco mine (northern marginal zone, limpopo belt, Zimbabwe)-a reply
Blenkinsop, T. G. & Frei, Robert, 1 Dec 1997, In: Economic Geology . 92, 6, p. 747-748 2 p.Research output: Contribution to journal › Comment/debate › Research › peer-review
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Assessing Mass-dependent Isotope Fractionation of Cerium
Weber, T., Frei, Robert & Rosing, Minik Thorleif, 2008, In: EOS : Transactions. 53Research output: Contribution to journal › Conference abstract in journal › Research
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Atmospheric oxygenation three billion years ago
Crowe, S., Døssing, L. N., Beukes, N. J., Bau, M., Kruger, S. J., Frei, Robert & Canfield, D. E., 2013, In: Nature. 501, 7468, p. 535-538 4 p.Research output: Contribution to journal › Letter › Research › peer-review
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Barnacles – recorders of environmental conditions with unique geochemical signatures
Ullmann, C. V., Gale, A., Korte, Christoph, Frei, Robert, Huggett, J. & Wray, D., 2017, In: Geophysical Research Abstracts. 19, 6134.Research output: Contribution to journal › Conference abstract in journal › Research › peer-review
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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. 541-544Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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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, , 2019, In: Science of the Total Environment. 672, p. 1033-1044 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Biogeochemical cycle of chromium isotopes at the modern Earth's surface and its applications as a paleo-environment proxy
Wei, W., Klaebe, R., Ling, H., Huang, F. & Frei, Robert, 20 May 2020, In: Chemical Geology. 541, 119570.Research output: Contribution to journal › Review › Research › peer-review
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Blyisotoper - Eksempler på deres anvendelse
Frei, Robert & Stendal, H., 2003, In: Varv. 1, p. 23-32Research output: Contribution to journal › Journal article › Research
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Blyisotoper og deres anvendelse
Frei, Robert, 2002, In: Varv. 4, p. 17-26Research output: Contribution to journal › Journal article › Research
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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
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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
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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
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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
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Carbon stable isotope record in the coral species Siderastrea stellata: A link to the Suess Effect in the tropical South Atlantic Ocean
Pereira, N. S., Sial, A. N., Kilbourne, K. H., Liu, S., Shen, C. -., Ullmann, C. V., Frei, Robert, Korte, Christoph, Kikuchi, R. K. P., Ferreira, V. P. & Braga, B. L. S. S., 2018, In: Palaeogeography, Palaeoclimatology, Palaeoecology - An International Journal for the Geo-Sciences. 497, p. 82-90 9 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Cerium Isotope Fractionation during Oxidative Precipitation.
Weber, T., Frei, Robert, Rosing, Minik Thorleif, Canfield, D., Dideriksen, K., Nedel, S., Stipp, S. L. S., Telouk, P. & Albarede, F., 2009. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research
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Characterisation of the natural attenuation of chromium contamination in the presence of nitrate using isotopic methods: A case study from the Matanza-Riachuelo River basin, Argentina
Ceballos, E., Margalef-Marti, R., Carrey, R., Frei, Robert, Otero, N., Soler, A. & Ayora, C., 2020, In: Science of the Total Environment. 699, 11 p., 134331.Research output: Contribution to journal › Journal article › Research › peer-review
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Characterization of enriched lithospheric mantle components in ~2.7 Ga banded iron formations: an example from the Tati Greenstone Belt, Northeastern Botswana
Døssing, L. N., Frei, Robert, Stendal, H. & Mapeo, R., 2009, In: Precambrian Research. 172, 3-4, p. 334-356Research output: Contribution to journal › Journal article › Research › peer-review
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Chemical and isotopic architecture of the belemnite rostrum
Ullmann, C. V., Frei, Robert, Korte, Christoph & Hesselbo, S. P., 5 Jun 2015, In: Geochimica et Cosmochimica Acta. 159, p. 231-243 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Chemostratigraphy Across the Cretaceous-Paleogene (K-Pg) Boundary: Testing the Impact and Volcanism Hypotheses
Sial, A. N., Chen, J., Lacerda, L. D., Frei, Robert, Higgins, J. A., Tewari, V. C., Gaucher, C., Ferreira, V. P., Cirilli, S., Korte, Christoph, Barbosa, J. A., Pereira, N. S. & Ramos, D. S., 2019, Chemostratigraphy Across Major Chronological Boundaries. Wiley, Vol. 240. p. 223-257 35 p. (Geophysical Monograph Series, Vol. 240).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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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. 433–449Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
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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
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Chromium Isotope Systematics in Modern and Ancient Microbialites
Bruggmann, S., Rodler, A. S., Klaebe, R. M., Goderis, S. & Frei, Robert, 2020, In: Minerals. 10, 10, 24 p., 928.Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium isotope composition of organic-rich marine sediments and their mineral phases and implications for using black shales as a paleoredox archive
Frank, A. B., Klaebe, R. M., Löhr, S., Xu, L. & Frei, Robert, 2020, In: Geochimica et Cosmochimica Acta. 270, p. 338-359 22 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium isotope cycling in the water column and sediments of the Peruvian continental margin
Bruggmann, S., Scholz, F., Klaebe, R. M., Canfield, D. E. & Frei, Robert, 2019, In: Geochimica et Cosmochimica Acta. 257, p. 224-242 23 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium isotope fractionation between modern seawater and biogenic carbonates from the Great Barrier Reef, Australia: Implications for the paleo-seawater delta δ53 reconstruction
Farkas, J., Fryda, J., Paulukat, C., Hathorne, E. C., Matouskova, S., Rohovec, J., Frydova, B., Francova, M. & Frei, Robert, 2018, In: Earth and Planetary Science Letters. 498, p. 140-151 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium isotope fractionation during coprecipitation with calcium carbonate
Rodler, A., Sánchez-Pastor, N., Fernández-Díaz, L. & Frei, Robert, 2015. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research
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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
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Chromium isotope fractionation during oxidative weathering of a modern basaltic weathering profile.
D'Arcy, J. M., Døssing, L. N. & Frei, Robert, 8 Jun 2014. 1 p.Research output: Contribution to conference › Poster › Research
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Chromium isotope fractionation during oxidative weathering of the Antrim Basalts: An insight into the global Cr geochemical cycle.
D'Arcy, J. M., Døssing, L. N., Frei, Robert & Babechuk, M., 20 Feb 2015. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research
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Chromium isotope heterogeneity on a modern carbonate platform
Klaebe, R., Swart, P. & Frei, Robert, 1 Jul 2021, In: Chemical Geology. 573, 13 p., 120227.Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium isotope record of the Otavi Group, Namibia
Rodler, A., Frei, Robert, Gaucher, C., Vögelin, A. R., Ullmann, C. V. & Korte, Christoph, 2013, In: Mineralogical Magazine. 77, 5, p. 2075 1 p.Research output: Contribution to journal › Conference abstract in journal › Research
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Chromium isotope stratigraphy of Ediacaran cap dolostones, Doushantuo Formation, South China
Rodler, A., Hohl, S. V., Guo, Q. & Frei, Robert, 15 Oct 2016, In: Chemical Geology. 436, p. 24-34Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium isotope, REE and redox-sensitive trace element chemostratigraphy across the late Neoproterozoic Ghaub glaciation, Otavi Group, Namibia
Rodler, A., Frei, Robert, Gaucher, C. & Germs, G. J. B., 2016, In: Precambrian Research. 286, p. 234-249 16 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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
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Chromium isotopes in the marine environment through time: a suitable paleoredox tracer?
Frei, Robert, 2008, Geochim. Cosmochim.: Acta. Vol. 72/12S. p. A283Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research
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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. 69-74Research output: Contribution to journal › Journal article › Research › peer-review
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Chromium-isotope signatures in scleractinian corals from the Rocas Atoll, Tropical South Atlantic
Pereira, N. S., Vögelin, A. R., Paulukat, C. S., Sial, A. N., Ferreira, V. P. & Frei, Robert, 2016, In: Geobiology. 14, 1, p. 54–67 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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. 2107-2122Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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
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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
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Comparative isotopic and chemical geochronometry of monazite, with implications for U-Th-Pb dating by electron microprobe: An example from metamorphic rocks of the eastern Wyoming Craton (U.S.A.)
Dahl, P. S., Hamilton, M. A., Jercinovic, M. L., Terry, M. P., Williams, M. L. & Frei, Robert, 2005, In: American Mineralogist. Vol. 90, p. 619-638Research output: Contribution to journal › Journal article › Research › peer-review
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Complex Sm-Nd and Lu-Hf isotope systematics of metamorphic garnets from the Isua Supracrustal Belt, West Greenland
Blichert-Toft, J. & Frei, Robert, 2001, In: Geochimica et Cosmochimica Acta. 65, p. 3177-3187Research output: Contribution to journal › Journal article › Research › peer-review
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Complex calc-alkaline volcanism recorded in Mesoarchaean supracrustal belts north of Frederikshåb Isblink, southern West Greenland: implications for subduction zone processes in the early earth
Szilas, Kristoffer, Hoffmann, J. E., Scherstén, A., Rosing, Minik Thorleif, Windley, B. F., Kokfelt, T. F., Keulen, N., van Hinsberg, V. J., Næraa, T., Frei, Robert & Münker, C., 2012, In: Precambrian Research. 208-211, p. 90-123 34 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Compositional variations in the Mesoarchean chromites of the Nuggihalli schist belt, Western Dharwar Craton (India): potential parental melts and implications for tectonic setting
Mukherjee, R., Mondal, S. K., Rosing, Minik Thorleif & Frei, Robert, 2010, In: Contributions to Mineralogy and Petrology. 160, 6, p. 865-885 21 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Constraining Shallow Seawater Oxygenation for the Yangtze Platform During the Early Cambrian
Frank, A. B., Klaebe, R. M., Xu, L. & Frei, Robert, 1 Jul 2021, In: Paleoceanography and Paleoclimatology. 36, 7, 19 p., e2021PA004282.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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
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Continued study of the origin of the cratonic upper mantle
Bernstein, S., Kelemen, P. B., Hanghøj, K., Kelley, R., Blusztajn, J. & Frei, Robert, 1999, Italien. 10 p.Research output: Book/Report › Report › Research
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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. 473-488Research output: Contribution to journal › Journal article › Research › peer-review
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Coral-based climate records from tropical South Atlantic: 2009/2010 ENSO event in C and O isotopes from Porites corals (Rocas Atoll, Brazil)
Pereira, N. S., Sial, A. N., Kikuchi, R. K. P., Ferreira, V. P., Ullmann, C. V., Frei, Robert & Cunha, A. M. C., 2015, In: Anais da Academia Brasileira de Ciencias.. 87, 4, p. 1939-1957 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Cr(VI)-calcite coprecipitation: implications for the use of Cr isotopes as paleoclimatic proxy
Rodler, A., Dietzel, M. & Frei, Robert, 2013.Research output: Contribution to conference › Conference abstract for conference › Research
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Cr-isotopes and REE variations in a laterite profile: Implication for redox processes and element mobility during weathering
Berger, A. & Frei, Robert, 2011, In: Mineralogical Magazine. 75, 3, p. 516 1 p.Research output: Contribution to journal › Conference abstract in journal › Research
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Dacitic ocelli in mafic lavas, 3.7-3.8 Ga Isua greenstone belt, Western Greenland: geochemical evidence for partial melting of oceanic crust and magma mixing
Appel, P. W. U., Polat, A. & Frei, Robert, 2009, In: Chemical Geology. 258, p. 105-124Research output: Contribution to journal › Journal article › Research › peer-review
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Dating a Variscan pressure-temperature loop with staurolite
Frei, Robert, Biino, G. G. & Prospert, C., 1995, In: Geology. 23, p. 1095-1098Research output: Contribution to journal › Journal article › Research › peer-review
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Dating brittle tectonic movements with cleft monazite: fluid-rock interaction and formation of REE minerals
Berger, A., Gnos, E., Janots, E., Whitehouse, M., Soom, M., Frei, Robert & Waight, Tod, 2013, In: Tectonics. 32, 5, p. 1176–1189 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Diet and mobility among Mesolithic hunter-gatherers in Motala (Sweden) - The isotope perspective
Eriksson, G., Frei, K. M., Howcroft, R., Gummesson, S., Molin, F., Liden, K., Frei, Robert & Hallgren, F., 2018, In: Journal of Archaeological Science: Reports. 17, p. 904-918 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Different degrees of partial melting of the enriched mantle source for Plio-Quaternary basic volcanism, Toprakkale (Osmaniye) Region, Southern Turkey
Bagci, U., Alpaslan, M., Frei, Robert, Kurt, M. A. & Temel, A., Mar 2011, In: Turkish Journal of Earth Sciences. 20, 1, p. 115-135 21 p.Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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. 589-607Research output: Contribution to journal › Journal article › Research › peer-review
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Early Cambrian Black Shale-Hosted Mo-Ni and V Mineralization on the Rifted Margin of the Yangtze Platform, China: Reconnaissance Chromium Isotope Data and a Refined Metallogenic Model
Lehmann, B., Frei, Robert, Xu, L. & Mao, J., 2016, In: Economic Geology . 111, 1, p. 89-103Research output: Contribution to journal › Journal article › Research › peer-review
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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. 1167–1187Research output: Contribution to journal › Journal article › Research › peer-review
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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. A296Research output: Contribution to journal › Conference abstract in journal › Research
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Large Igneous Province volcanism, ocean anoxia and marine mass extinction
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Mapping human mobility during the third and second millennia BC in present-day Denmark
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Tracing the dynamic life story of a Bronze Age Female
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