Robert Frei
Professor
Geology
Øster Voldgade 10
1350 København K
- 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
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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. 47-66Research 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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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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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
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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. 1925-1936Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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
- 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-L10Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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. L7Research output: Contribution to journal › Journal article › Research › peer-review
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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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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. A744Research output: Contribution to journal › Conference abstract in journal › Research
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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
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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
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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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Surface water oxygenation and low bioproductivity during deposition of iron formation of the Jacadigo Group (Brazil): Insights from combined cadmium – Chromium isotopes
Frei, Robert, Gaucher, C., Boggiani, P. C., Frederiksen, J. A., Walker, Samantha Renee, Fernandes, H. A. & Caxito, F., 5 Jul 2024, In: Chemical Geology. 657, 122101.Research output: Contribution to journal › Journal article › Research › peer-review
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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. 746-762Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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
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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
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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
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Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes
Frei, Robert, Gaucher, C., Canfield, D. E. & Poulton, S. W., 2009, In: Nature. 461, p. 250-253Research output: Contribution to journal › Journal article › Research › peer-review
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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
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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. 676-681Research output: Contribution to journal › Journal article › Research › peer-review
ID: 11756
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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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