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Robert Frei

university of copenhagen

73H-index
444Paper Count
1.7WCitation Count
Published Papers 127
Publication Date
Suppressed upwelling during the Cambrian–Ordovician transition revealed by coupled Cr–Cd isotope systematics
err2026-07-08
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PREAI
errGuoqiang Luan; Karem Azmy; Robert Frei; Chengyan Lin; Jianli Lin; Guangyou Zhu
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Water circulation, redox, and productivity dynamics shaped late Ediacaran ecosystems: Insights from trace elements and combined Sr–Cr–Cd isotopes in the Corumbá Group, Brazil
err2026-02-04
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errOAAI
errHenrique Albuquerque Fernandes; Paulo César Boggiani; Jesper Allan Frederiksen; Thales Pescarini; Vinicius Cardoso-Lucas; Gustavo Paula-Santos; Eric Elias; Marly Babinski; Juliana Leme; Catherine V. Rose; Ricardo Ivan Ferreira Trindade; Robert Frei
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Isotope constraints on nutrient supply, bio-productivity and redox dynamics in the Mesoproterozoic McArthur Basin, Australia: Insights from δ114Cd, δ13C and δ15N proxies
err2025-11-21
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errOAAI
errYaser Noorian; Juraj Farkaš; Alan S. Collins; Robert Frei; Eva E. Stüeken; Samantha R. Walker; Claudio Delle Piane; Wei Wen Wong
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A Late Bronze Age foreign elite? Investigating mobility patterns at Seddin, Germany
err2025-09-10
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errOAAI
errFrank, Anja B.; May, Jens; Sabatini, Serena; Schopper, Franz; Frei, Robert; Kaul, Flemming; Storch, Susanne; Hansen, Svend; Kristiansen, Kristian; Frei, Karin M.
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New scientific evidence for the history and occupants of tomb I (Tomb of Persephone) in the Great Tumulus at Vergina
err2025-07-01
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errOAAI
errManiatis, Yannis; Drosou, Konstantina; Orbegozo, Miren Iraeta; Mylopotamitaki, Dorothea; Brown, Terence A.; Brown, Keri; Frei, Robert; Talamo, Sahra; Antikas, Theodore G.; Wynn-Antikas, Laura
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Rapid bioproductivity recovery following the Marinoan glaciation: Evidence from Sr-Cr-Cd isotopes and trace elements in the Morraria do Sul cap dolostone, Brazil
err2025-02-01
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PREAI
errFernandes, Henrique Albuquerque; Boggiania, Paulo Cesar; Frederiksen, Jesper Allan; Campos, Marcelo Da Roz; Cardoso-Lucas, Vinicius; Freitas, Bernardo Tavares; Frei, Robert
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Controls on Corundum Formation: Metasomatism of Ultramafic Rock, Nattivit, South-East Greenland
err2024-10-23
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PREAI
errPoulsen, Majken D.; Keulen, Nynke; van Hinsberg, Vincent; Kolb, Jochen; Frei, Robert; Thomsen, Tonny B.; Nielsen, Olga; Vennemann, Torsten
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Analytical methodological adaptations for sampling ancient pigments in provenance research
err2024-09-01
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PREAI
errRodler-Rorbo, Alexandra; Brons, Cecilie; Tepe, Nathalie; Van Ham-Meert, Alicia; Artioli, Gilberto; Frei, Robert; Hofmann, Thilo; Koeberl, Christian
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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
err2024-07-01
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errOAAI
errFrei, Robert; Gaucher, Claudio; Boggiani, Paulo Cesar; Frederiksen, Jesper Allan; Walker, Samantha Renee; Fernandes, Henrique Albuquerque; Caxito, Fabricio
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Combined cadmium and chromium isotopes record a collapse of bioproductivity across the Cretaceous-Paleogene boundary in the Danish basin
err2024-06-01
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errOAAI
errFrederiksen, Jesper Allan; Thibault, Nicolas; Gilleaudeau, Geoffrey J.; Bjerrum, Christian J.; Moreau, Julien; Frei, Robert
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Geochemistry of Archean anorthosite-bearing layered intrusions
err2024-02-01
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PREAI
errSotiriou, Paul; Polat, Ali; Kusky, Tim; Windley, Brian F.; Frei, Robert; Yang, Xue-Ming
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Strong positive fractionation of chromium isotopes in iron formation of the Jacadigo Group (Brazil)-A link to enhanced atmospheric oxygenation during the Late Neoproterozoic
err2023-12-01
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errOAAI
errArting, Trygvi Bech; Boggiani, Paulo Cesar; Gaucher, Claudio; Fernandes, Henrique Albuquerque; Frei, Robert
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Geological processes defining the formation of plumasite-type corundum in the Paleoproterozoic Isertoq Terrane, South-East Greenland
err2023-02-01
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errOAAI
errPoulsen, Majken D.; Keulen, Nynke; van Hinsberg, Vincent J.; Kolb, Jochen; Frei, Robert; Thomsen, Tonny B.
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C, Sr, Nd isotope chemostratigraphy and zircon provenance of the Witvlei Group (Namibia): Neoproterozoic glaciations and seawater evolution
err2022-05-01
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errOAAI
errHohl, Simon, V; Rodler, Alexandra S.; Viehmann, Sebastian; Huang, Xiangtong; Xu, Juan; Gaucher, Claudio; Germs, Gerard J. B.; Hegenberger, Wulf; Goderis, Steven; Wei, Haizhen; Frei, Robert
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