Robert Frei
Robert Frei
Professor of Geochemistry and Petrology
Geverifieerd e-mailadres voor ign.ku.dk
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History of atmospheric lead deposition since 12,370 14C yr BP from a peat bog, Jura Mountains, Switzerland
W Shotyk, D Weiss, PG Appleby, AK Cheburkin, R Frei, M Gloor, ...
Science 281 (5383), 1635-1640, 1998
7981998
Fluctuations in Precambrian atmospheric oxygenation recorded by chromium isotopes
R Frei, C Gaucher, SW Poulton, DE Canfield
Nature 461 (7261), 250-253, 2009
5232009
Atmospheric oxygenation three billion years ago
SA Crowe, LN Dřssing, NJ Beukes, M Bau, SJ Kruger, R Frei, ...
Nature 501 (7468), 535-538, 2013
4522013
Geochemistry of the peat bog at Etang de la Gručre, Jura Mountains, Switzerland, and its record of atmospheric Pb and lithogenic trace metals (Sc, Ti, Y, Zr, and REE) since 12 …
W Shotyk, D Weiss, JD Kramers, R Frei, AK Cheburkin, M Gloor, S Reese
Geochimica et Cosmochimica Acta 65 (14), 2337-2360, 2001
2982001
Tracing the Indian Ocean mantle domain through time: isotopic results from old West Indian, East Tethyan, and South Pacific seafloor
JJ Mahoney, R Frei, MLG Tejada, XX Mo, PT Leat, TF Nägler
Journal of Petrology 39 (7), 1285-1306, 1998
2781998
U-rich Archaean sea-floor sediments from Greenland–indications of> 3700 Ma oxygenic photosynthesis
MT Rosing, R Frei
Earth and Planetary Science Letters 217 (3-4), 237-244, 2004
2662004
New Lu–Hf and Pb–Pb age constraints on the earliest animal fossils
GH Barfod, F Albarčde, AH Knoll, S Xiao, P Télouk, R Frei, J Baker
Earth and Planetary Science Letters 201 (1), 203-212, 2002
2512002
Lithospheric to asthenospheric transition in low-Ti flood basalts from southern Parana, Brazil
DW Peate, CJ Hawkesworth
Chemical Geology 127 (1-3), 1-24, 1996
2081996
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, ME Goodsite, F Roos-Barraclough, R Frei, J Heinemeier, ...
Geochimica et Cosmochimica Acta 67 (21), 3991-4011, 2003
2022003
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, JM Barton Jr, JD Kramers
Precambrian Research 87 (1-2), 87-115, 1998
1921998
Single mineral PbPb dating
R Frei, BS Kamber
Earth and Planetary Science Letters 129 (1-4), 261-268, 1995
1601995
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 …
R Frei, A Polat
Earth and Planetary Science Letters 253 (1-2), 266-281, 2007
1492007
The geographic distribution of strontium isotopes in Danish surface waters–A base for provenance studies in archaeology, hydrology and agriculture
KM Frei, R Frei
Applied geochemistry 26 (3), 326-340, 2011
1442011
Geochronology of the Hout River shear zone and the metamorphism in the Southern marginal zone of the Limpopo Belt, Southern Africa
K Kreissig, L Holzer, R Frei, IM Villa, JD Kramers, A Kröner, CA Smit, ...
Precambrian Research 109 (1-2), 145-173, 2001
1392001
The Nd and Hf isotopic evolution of the mantle through the Archean. Results from the Isua supracrustals, West Greenland, and from the Birimian terranes of West Africa
J Blichert-Toft, F Albarčde, M Rosing, R Frei, D Bridgwater
Geochimica et Cosmochimica Acta 63 (22), 3901-3914, 1999
1371999
Single mineral dating by the PbPb step-leaching method: Assessing the mechanisms
R Frei, IM Villa, TF Nägler, JD Kramers, WJ Przybylowicz, VM Prozesky, ...
Geochimica et Cosmochimica Acta 61 (2), 393-414, 1997
1291997
Post-collisional transition from calc-alkaline to alkaline magmatism during transcurrent deformation in the southernmost Dom Feliciano Belt (Braziliano–Pan-African, Uruguay)
P Oyhantçabal, S Siegesmund, K Wemmer, R Frei, P Layer
Lithos 98 (1-4), 141-159, 2007
1262007
Distribution of platinum-group elements and Os isotopes in chromite ores from Mayarí-Baracoa Ophiolitic Belt (eastern Cuba)
F Gervilla, JA Proenza, R Frei, JM Gonzalez-Jimenez, CJ Garrido, ...
Contributions to Mineralogy and Petrology 150 (6), 589-607, 2005
1252005
Reduction of hexavalent chromium by ferrous iron: A process of chromium isotope fractionation and its relevance to natural environments
LN Dřssing, K Dideriksen, SLS Stipp, R Frei
Chemical Geology 285 (1-4), 157-166, 2011
1232011
The genesis of Archaean chromitites from the Nuasahi and Sukinda massifs in the Singhbhum Craton, India
SK Mondal, EM Ripley, C Li, R Frei
Precambrian Research 148 (1-2), 45-66, 2006
1222006
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Artikelen 1–20