World's Best Scientists 2026 revealed!
Award Badge
Earth Science
Denmark
2026

D-Index & Metrics

Earth Science

D-Index
82
Citations
19647
World Ranking
478
National Ranking
5

Research.com Recognitions

  • 2026 - Research.com Earth Science in Denmark Leader Award
  • 2025 - Research.com Earth Science in Denmark Leader Award
  • 2023 - Research.com Earth Science in Denmark Leader Award
  • 2022 - Research.com Earth Science in Denmark Leader Award

Overview

Robert Frei is affiliated with the University of Copenhagen in Denmark and has focused their research primarily within the Earth and Planetary Sciences, publishing extensively across various subfields. Their work spans paleontology, geochemistry and petrology, geophysics, atmospheric science, and ecology, reflecting a broad engagement with the natural sciences relating to the Earth's physical processes and history.

Their research topics include geochemistry and elemental analysis, paleontology and stratigraphy of fossils, geological and geochemical analysis, geology and paleoclimatology research, isotope analysis in ecology, archaeology, and ancient environmental studies, as well as geochemistry and geologic mapping. These areas highlight an interdisciplinary approach combining geological, chemical, and ecological perspectives to study the Earth's environments and past climates.

Frei has contributed to multiple frequent publication venues, which include:

  • Chemical Geology
  • Precambrian Research
  • SSRN Electronic Journal
  • The Science of The Total Environment
  • Journal of South American Earth Sciences

Notable recent papers authored or co-authored by Robert Frei include:

  • "Enhanced soil quality with reduced tillage and solid manures in organic farming - a synthesis of 15 years" (2020, Scientific Reports)
  • "Biogeochemical cycle of chromium isotopes at the modern Earth's surface and its applications as a paleo-environment proxy" (2020, Chemical Geology)
  • "A transient swing to higher oxygen levels in the atmosphere and oceans at ~1.4 Ga" (2020, Precambrian Research)
  • "Goldilocks at the dawn of complex life: mountains might have damaged Ediacaran-Cambrian ecosystems and prompted an early Cambrian greenhouse world" (2021, Scientific Reports)
  • "The link between surface water and groundwater-based drinking water - strontium isotope spatial distribution patterns and their relationships to Danish sediments" (2020, Applied Geochemistry)

The researcher often collaborates with a range of co-authors, including Karin Margarita Frei, Anja B. Frank, Claudio Gaucher, Jesper Allan Frederiksen, and Robert Klaebe. These frequent collaborations indicate a networked approach to their scientific inquiry, contributing to diverse multi-author studies.

Best Publications

  • History of Atmospheric Lead Deposition Since 12,370 14C yr BP from a Peat Bog, Jura Mountains, Switzerland

    W. Shotyk;D. Weiss;P. G. Appleby;A. K. Cheburkin

  • Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes

    Robert Frei;Claudio Gaucher;Simon W. Poulton;Don E. Canfield

  • Atmospheric oxygenation three billion years ago

    Sean Andrew Crowe;Lasse N. Døssing;Lasse N. Døssing;Nicolas J. Beukes;Michael Bau

  • Geochemistry of the peat bog at Etang de la Gruère, Jura Mountains, Switzerland, and its record of atmospheric Pb and lithogenic trace metals (Sc, Ti, Y, Zr, and REE) since 12,370 14 C yr BP

    W. Shotyk;D. Weiss;J.D. Kramers;R. Frei

  • Tracing the Indian Ocean Mantle Domain Through Time: Isotopic Results from Old West Indian, East Tethyan, and South Pacific Seafloor

    J. J. Mahoney;R. Frei;M. L. G. Tejada;X. X. Mo

  • U-rich Archaean sea-floor sediments from Greenland - indications of >3700 Ma oxygenic photosynthesis

    Minik T. Rosing;Robert Frei

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

    Gry H Barfod;Francis Albarède;Andrew H Knoll;Shuhai Xiao

  • Tracing the dynamic life story of a Bronze Age Female

    Karin Margarita Frei;Ulla Mannering;Kristian Kristiansen;Morten E. Allentoft

  • Anthropogenic contributions to atmospheric Hg, Pb and As accumulation recorded by peat cores from southern Greenland and Denmark dated using the 14C “bomb pulse curve”

    W. Shotyk;Michael Evan Goodsite;F. Roos-Barraclough;R. Frei

  • The geographic distribution of strontium isotopes in Danish surface waters – A base for provenance studies in archaeology, hydrology and agriculture

    Karin M. Frei;Robert Frei

  • Unraveling the record of successive high grade events in the Central Zone of the Limpopo Belt using Pb single phase dating of metamorphic minerals

    L. Holzer;R. Frei;J.M. Barton;J.D. Kramers

  • 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

    Robert Frei;Ali Polat

  • Oxygenation of the mid-Proterozoic atmosphere: clues from chromium isotopes in carbonates

    G.J. Gilleaudeau;R. Frei;A.J. Kaufman;L.C. Kah

  • Highly fractionated chromium isotopes in Mesoproterozoic-aged shales and atmospheric oxygen.

    Donald E. Canfield;Shuichang Zhang;Anja B. Frank;Xiaomei Wang

  • The genesis of Archaean chromitites from the Nuasahi and Sukinda massifs in the Singhbhum Craton, India

    Sisir K. Mondal;Edward M. Ripley;Chusi Li;Robert Frei

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

    Christian M. Ø. Rasmussen;Clemens V. Ullmann;Kristian G. Jakobsen;Anders Lindskog

  • Distribution of platinum-Group elements and Os isotopes in chromite ores from Mayarí-Baracoa Ophiolitic Belt (eastern Cuba).

    F. Gervilla;J.A. Proenza;R. Frei;J.M. González-Jiménez

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

    Pedro Oyhantçabal;Siegfried Siegesmund;Klaus Wemmer;Robert Frei

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

    L.N. Døssing;K. Dideriksen;S.L.S. Stipp;R. Frei

  • The behavior of molybdenum and its isotopes across the chemocline and in the sediments of sulfidic Lake Cadagno, Switzerland

    Tais Wittchen Dahl;Ariel Anbar;Gwyneth Gordon;Minik Rosing

  • Single mineral PbPb dating

    Robert Frei;Balz S. Kamber

Frequent Co-Authors

Ali Polat
Ali Polat University of Windsor
Clemens V. Ullmann
Clemens V. Ullmann University of Exeter
Minik T. Rosing
Minik T. Rosing University of Copenhagen
Alcides N. Sial
Alcides N. Sial Federal University of Pernambuco
Christoph Korte
Christoph Korte University of Copenhagen
Jan Kramers
Jan Kramers University of Johannesburg
Anders Meibom
Anders Meibom École Polytechnique Fédérale de Lausanne
Valderez P. Ferreira
Valderez P. Ferreira Federal University of Pernambuco
Thomas F. Nägler
Thomas F. Nägler University of Bern
Donald E. Canfield
Donald E. Canfield University of Southern Denmark

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring online degrees related to Earth Science can open diverse career pathways. For veterans interested in creative fields, programs such as online photography degrees for veterans provide flexible, skill-building opportunities that complement scientific observation and documentation.

Language skills are also valuable in Earth Science careers, especially when working internationally. An online Spanish degree offers a cost-effective way to gain proficiency, enhancing communication and research collaboration across Spanish-speaking regions.

Military veterans have unique support options available, like tailored programs in language acquisition. The online Spanish degree for military veterans ensures specialized resources and flexible learning to facilitate smooth transitions into civilian careers related to Earth Science.

For those leaning toward creative and analytical expression within science, considering an mfa online program can enhance skills in communication and media, useful for roles in science education, environmental advocacy, and public outreach.

Best Scientists Citing Robert Frei

Trending Scientists

Recently Published Articles