Robert Frei

Robert Frei

Professor

ORCID: 0000-0001-7708-9881

Publication year:
All
201 - 225 out of 381Page size: 25
  1. 2009
  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. Published

    Tectonomagmatic events during stretching and basin formation in the Labrador Sea and the Davis Strait: evidence from age and composition of Mesozoic to Palaeogene dyke swarms in West Greenland.

    Larsen, L. M., Heaman, L. M., Creaser, R. A., Duncan, R. A., Frei, Robert & Hutchinson, M., 2009, In: Journal of the Geological Society - London. 166, p. 999-1012

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

  8. Published

    The origin of geochemical trends and Eoarchean (ca. 3700 Ma) zircons in Mesoarchean (ca. 3075 Ma) ocelli-hosting pillow basalts, Ivisaartoq greenstone belt, SW Greenland: evidence for crustal contamination versus crustal recycling.

    Polat, A. B., Frei, Robert, Fryer, B. & Appel, P. W. U., 2009, In: Chemical Geology. 268, p. 248-271

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

  9. Published

    Trace element systematics of the Neoarchean Fiskenæsset anorthosites and associated rocks, SW Greenland: Evidence for a magmatic arc origin.

    Polat, A. B., Appel, P. W. U., Fryer, B., Windley, B., Frei, Robert, Samson, I. M. & Huang, H., 2009, In: Precambrian Research. 175, p. 87-115

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

  10. 2008
  11. Published

    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. 51-76

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

  12. Published

    Assessing Mass-dependent Isotope Fractionation of Cerium

    Weber, T., Frei, Robert & Rosing, Minik Thorleif, 2008, In: EOS : Transactions. 53

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

  13. 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

  14. 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

  15. 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

  16. 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

  17. Published

    Mo isotope variations in meromictic Lake Cadagno

    Dahl, Tais Wittchen, Anbar, A. D., Gordon, G. W., Frei, Robert & Canfield, D. E., 2008, In: Geochim. Cosmochim.. Acta 71, Supplement 1, p. p. A196

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

  18. 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

  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

    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

  21. 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

  22. Published

    The origin and compositions of Mesoarchean oceanic crust: evidence from the 3075 Ma Ivisaartoq greenstone belt, southern West Greenland

    Polat, A., Frei, Robert, Appel, P. W. U., Dilek, Y., Fryer, B., Ordonez-Calderon, J. C. & Yang, Z., 2008, In: Lithos. 100, p. 293-321

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

  23. 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

  24. 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

  25. 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

  26. Published

    Was the Black Hills domain (South Dakota) always part of the Archean Wyoming Craton? new evidence from ~3.4-2.7 Ga detrital-zircon populations found in both ~1.9 and ~2.5 Ga strata

    Dahl, P. S., Frei, Robert & Whitehouse, W. M. J., 2008, Geological Society of America Abstracts with Programs. Vol. 40(6). p. 145-15

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

  27. 2007
  28. 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

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