Prof. Dr. Michael Bau

Geochemistry - Geosciences: CritMET
School of Science
Campus Ring 1 | 28759 Bremen | Germany
Phone number
+49 421 200-3564
Fax number
+49 421 200-3229
Email Address
Research III, Room 119
Research Interests

Biogeochemistry of the Earth's Surface Environment

  • Trace Element and Isotope Biogeochemistry of Marine and Terrestrial Low-Temperature Systems
  • Critical Metals for Enabling Technologies: Resources and Environmental Impact
  • Biogeochemistry of Rare Earth Elements and other Critical Metals
  • Resource and Environmental Biogeochemistry
  • Evolution of Biogeochemical Element Cycles Throughout Earth's History
  • Ancient and Modern Chemical Sediments and Astrobiology
University Education

1998     Habilitation, venia legendi for Geochemistry; Free University, Berlin, Germany

1991     Dissertation, Dr. rer. nat., Geochemistry; Hahn-Meitner-Institute/
              Free University Berlin

1988     Diploma, Geology; Technical University of Aachen (RWTH), Germany

Fellowships and Awards
Mineralogical Society of Canada: Hawley Medal for Best Paper Published in 2011 in the Canadian Mineralogist for: Göb, S., Wenzel, T., Bau, M., Jacob, D.E., Loges, A., and Markl, G., 2011. The redistribution of rare-earth elements in secondary minerals of hydrothermal veins, Schwarzwald, southwestern Germany. Can. Mineral., 49, 1305-1333
Geochemical Society of Japan: Award for Best Paper Published in 2009 in the Geochemical Journal for: Bau, M., and Koschinsky, A., 2009. Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare arth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts. Geochemical Journal, 43, pp. 37-47.7td>
Award from Jacobs University's Undergraduate Student Parliament "The Great Entertainer: given to the instructor who captures your attention... and holds it for the entire class".
Research and Teaching Positions
since 2003     
Jacobs University Bremen (former International University Bremen), Germany
Professor of Geosciences
The Pennsylvania State University, USA
Penn State Astrobiology Research Center
Senior Research Associate
Free University Berlin, Germany
GeoForschungsZentrum Potsdam, Germany
Research Associate
Hahn-Meitner-Institute Berlin, Germany
PhD Student and Junior Research Associate


Academic Management Positions:

since 2003
Head of the Research Group "Resource and Environmental Studies" at Jacobs University Bremen
Elected Member of the Academic Senate and of the Faculty Council of Jacobs University Bremen
Chair of the President's Committee on Research at Jacobs University Bremen
Elected Faculty Speaker at Jacobs University Bremen
Study Program Chair of the programs
"Integrated Environmental Studies" and
"Earth and Environmental Science"
at Jacobs University Bremen


Selected Publications
Zocher, A.-L., Klimpel, F., Kraemer, D., and Bau, M., (2021) Assessing the bioavailability of dissolved rare earths and other trace elements: digestion experiments with aquatic plant species Lemna minor (“duckweed” reference standard BCR-670), Applied Geochemistry (in press);
Schier, K., Ernst, D.M., Sousa, I., Garbe-Schönberg, D., Kuhn, T., Hein, J.R., and Bau, M., (2021). Gallium-aluminum systematics of marine hydrogenetic ferromanganese crusts: Inter-oceanic differences and fractionation during scavenging. Geochimica Cosmochimica Acta (in press); 
Schulz, T., Viehmann, S., Hezel, D.C., Koeberl, C., and Bau, M., (2021). Highly Siderophile Elements and Coupled Fe-Os Isotope Signatures in the Temagami Iron Formation, Canada: Possible Signatures of Neoarchean Seawater Chemistry and Earth's Oxygenation History. Astrobiology 21, 924-934;
Klimpel, F., Bau, M., and Graupner, T., (2021). Potential of garnet sand as an unconventional resource of the critical high-technology metals scandium and rare earth elements. Scientific Reports 11, 5306 (2021).
Kraemer, D., Frei, R., Ernst, D.M., Bau, M., and Melchiorre, E., 2021. Serpentinization in the Archean and Early Phanerozoic – Insights from chromium isotope and REY systematics of the Mg—Cr hydroxycarbonate stichtite and associated host serpentinites. Chemical Geology 565 (2021) ; DOI: 10.1016/j.chemgeo.2020.120055 ; scopusEID: 2-s2.0-85101055301
Ernst, D.M. and Bau, M., 2021. Banded iron formation from Antarctica: The 2.5 Ga old Mt. Ruker BIF and the antiquity of lanthanide tetrad effect and super-chondritic Y/Ho ratio in seawater. , Gondwana Research 91, 97-111; DOI: 10.1016/; scopusEID: 2-s2.0-85098210239
Schier K., Himmler T., Lepland A., Kraemer D., Schönenberger J., and Bau M.. 2021. Insights into the REY inventory of seep carbonates from the Northern Norwegian margin using geochemical screening., RChemical Geology 559; DOI: 10.1016/j.chemgeo.2020.119857; scopusEID: 2-s2.0-85097041326
Justo A.P., Dantas E.L., Bau M., Freitas-Silva F.H., Santos R.V., and Schorscher J.H.D. 2020. Paleobasinal to band-scale REE + Y distribution in iron formations from Carajás, Amazon Craton, Brazil. , Ore Geology Reviews 127 (2020); DOI: 10.1016/j.oregeorev.2020.103750; scopusEID: 2-s2.0-85096589551
Schier K., Bau M., Smith A.J.B., Beukes N.J., Coetzee L.L., and Viehmann S. 2020. Chemical evolution of seawater in the Transvaal Ocean between 2426 Ma (Ongeluk Large Igneous Province) and 2413 Ma ago (Kalahari Manganese Field). , Gondwana Research 88, 373-388; DOI: 10.1016/; scopusEID: 2-s2.0-85092933624
Kreitsmann T.; Lepland A.; Bau M.; Prave A.; Paiste K.; Mänd K.; Sepp H.; Martma T.; Romashkin A.E.; and Kirsimäe K. 2020. Oxygenated conditions in the aftermath of the Lomagundi-Jatuli Event: The carbon isotope and rare earth element signatures of the Paleoproterozoic Zaonega Formation, Russia. Precambrian Research 347 (2020) ; DOI: 10.1016/j.precamres.2020.105855 ; scopusEID: 2-s2.0-85088655269 2020 0
Benaouda R.; Kraemer D.; Sitnikova M.; Goldmann S.; Schwarz-Schampera U.; Errami A.; Mouttaqi A.; and Bau M. 2020. Discovery of high-grade REE-Nb-Fe mineralization associated with calciocarbonatite in south Morocco. Ore Geology Reviews 124 (2020) ; DOI: 10.1016/j.oregeorev.2020.103631 ; scopusEID: 2-s2.0-85088092516 2020 0
Hedrich S.; Kraemer D.; Junge M.; Marbler H.; Bau M.; and Schippers A. 2020. Bioprocessing of oxidized platinum group element (PGE) ores as pre-treatment for efficient chemical extraction of PGE. Hydrometallurgy 196 (2020) ; DOI: 10.1016/j.hydromet.2020.105419 ; scopusEID: 2-s2.0-85087932349
Benaouda, R., Kraemer, D., Sitnikov, M., Goldmann, S., Freitag, R., Bouali, A., Mouttaqi, A., El Haloui, R., Essaadaoui, M., and Bau, M., 2020. Thorium-poor monazite and columbite-(Fe) mineralization in the Gleibat Lafhouda carbonatite and its associated iron-oxide-apatite deposit of the Ouled Dlim Massif, South Morocco. Gondwana Research 77, 19-39.
Paul S., Haeckel M., Bau M., Bajracharya R., and Koschinsky A., 2019. Small-scale heterogeneity of trace metals including rare earth elements and yttrium in deep-sea sediments and porewaters of the Peru Basin, southeastern equatorial Pacific. Biogeosciences 16, 4829-4849.
Schmidt, K., Bau, M., Merschel, G., and Tepe, N., 2019. Anthropogenic gadolinium in tap water and in tap water-based beverages from fast-food franchises in six major cities in Germany. Science of the Total Environment 687, 1401-1408.
Kraemer, D., Viehmann, S., Banks, D., Sumoondur, A.D., Koeberl, C., and Bau, M.,2019. Regional variations in fluid formation and metal sources in MVT mineralization in the Pennine Orefield, UK: Implications from rare earth element and yttrium distribution, Sr-Nd isotopes and fluid inclusion compositions of hydrothermal vein fluorites. Ore Geology Reviews 107, 960-972.
Paul, S.A.L., Volz, J.B., Bau, M., Köster, M., Kasten, S., and Koschinsky, A., 2019. Calcium phosphate control of REY patterns of siliceous-ooze-rich deep-sea sediments from the central equatorial Pacific. Geochimica Cosmochimica Acta 251, 56-72.
Kraemer D., Frei R., Viehmann S., and Bau M., 2019. Mobilization and isotope fractionation of chromium during water-rock interaction in presence of siderophores. Applied Geochemistry 102, 44-54.
Viehmann S., Hohl S., Kraemer D., Bau M., Walde D., Galer S., Jiang S., and Meister P., 2019. Metal cycling in Mesoproterozoic microbial habitats: Insights from trace elements and stable Cd isotopes in stromatolites. Gondwana Research 67, 101-114.
Oonk, P.B.H., Mason, P.R.D., Tsikos, H., and Bau, M., 2018. Fraction-specific rare earth elements enable the reconstruction of primary seawater signatures from iron formations. Geochim. Cosmochim. Acta 238, 102-122.
Schier, K., Bau, M., Münker, C., Beukes, N., and Viehmann, S., 2018. Trace element and Nd isotope composition of shallow seawater prior to the Great Oxidation Event: Evidence from stromatolitic bioherms in the Paleoproterozoic Rooinekke and Nelani Formations, South Africa. Precambrian Research 315, 92-102.
Zocher, A.L., Kraemer, D., Merschel, G., and Bau, M., 2018.Distribution of major and trace elements in the bolete mushroom Suillus luteus and the bioavailability of rare earth elements. Chemical Geology, Volume 483, 491-500
Viehmann, S., Bau, M., Hoffmann, J.E., and Münker, C., 2018. Decoupled Hf and Nd isotopes in suspended particles and in the dissolved load of Late Archean seawater. Chemical Geology, Volume 483, 111-118
Bau, M., Schmidt, K., Pack, A., Bendel, V., and Kraemer, D., 2018. The European Shale: An improved data set for normalisation of rare earth element and yttrium concentrations in environmental and biological samples from Europe. Applied Geochemistry 90, 142-149.
Merschel, G., Bau, M., Schmidt, K., Münker, C., and Dantas, E.L., 2017. Hafnium and neodymium isotopes and REY distribution in the truly dissolved, nanoparticulate/colloidal and suspended loads of rivers in the Amazon Basin, Brazil. Geochim. Cosmochim. Acta 213, 383-399.
Kraemer, D., Junge, M., and Bau, M., 2017. Oxidized Ores as Future Resource for Platinum Group Metals: Current State of Research. Chemie-Ingenieur-Technik 89, 53-63.
Merschel, G., Bau, M., and Elton Luiz Dantas, E.L., 2017. Contrasting impact of organic and inorganic nanoparticles and colloids on the behavior of particle-reactive elements in tropical estuaries: An experimental study. Geochim. Cosmochim. Acta 197, 1–13.
Kraemer, D., Tepe, N., Pourret, O. and Bau, M., 2017. Negative cerium anomalies in manganese (hydr)oxide precipitates due to cerium oxidation in the presence of dissolved siderophores. Geochim. Cosmochim. Acta 196, 197–208.
Viehmann, S., Bau, M., Bühn, B., Dantas, E.L., Andrade, F.R.D., Walde, D.H.G., 2016. Geochemical characterisation of Neoproterozoic marine habitats: Evidence from trace elements and Nd isotopes in the Urucum iron and manganese formations, Brazil. Precambrian Research, in press.
Tepe, N. and Bau, M., 2016. Behavior of rare earth elements and yttrium during simulation of arctic estuarine mixing between glacial-fed river waters and seawater and the impact of inorganic (nano-)particles. Chemical Geology 438, 134–145.
Cremiere, A., et al…, 2016. Fluid source and methane-related diagenetic processes recorded in 2 cold seep carbonates from the Alvheim channel, central North Sea. Chemical Geology 432, 16-33.
Frei, R., Crowe, S.A., Bau, M., Polat, A., Fowle, D.A., and Døssing, L.N., 2016. Oxidative elemental cycling under the low O2 Eoarchean atmosphere. Scientific Reports, 6, 21058..
Ponnurangam, A., Bau, M., Brenner, M., and Koschinsky, A., 2016. Mussel shells of Mytilus edulis as bioarchives of the distribution of rare earth elements and yttrium distribution in seawater and the potential impact of pH and temperature on their partitioning behaviour. Biogeosciences, 13, 751-760.
Viehmann, S., Bau, M., Hoffmann, J.E., and Muenker, C., 2015. Geochemistry of the Krivoy Rog Banded Iron Formation, Ukraine, and the impact of peak episodes of increased global magmatic activity on the trace element composition of Precambrian seawater Precambrian Geology 270, 165-180.
Viehmann, S., Bau, M., Smith, A.J.B., Beukes, N.J., Dantas, E.L., and Bühn, B., 2015. The reliability of ~2.9 Ga old Witwatersrand banded iron formations (South Africa) as archives for Mesoarchean seawater: Evidence from REE and Nd isotope systematics. Journal of African Earth Sciences 111, 322-334.
Tepe, N. and Bau, M., 2015. Distribution of rare earth elements and other high field strength elements in glacial meltwaters and sediments from the western Greenland ice sheet: Evidence for different sources of particles and nanoparticles. Chemical Geology 412, 59-68.
Kraemer, D., Kopf, S., and Bau, M., 2015. Oxidative mobilization of cerium and uranium and enhanced release of “immobile” high field strength elements from igneous rocks in the presence of the biogenic siderophore desferrioxamine-B. Geochim. Cosmochim. Acta165, 263–279.
Merschel, G.and Bau, M., 2015. Rare earth elements in the aragonitic shell of freshwater mussel Corbicula fluminea and the bioavailability of anthropogenic lanthanum, samarium and gadolinium in river water. Science of the Total Environment 533, 91–101.
Merschel, G., Bau, M., Baldewein, L., Dantas, E.L., Walde, D., and Bühn, B., 2015. Tracing and tracking wastewater-derived substances in freshwater lakes and reservoirs: Anthropogenic gadolinium and geogenic REEs in Lake Paranoá, Brasilia. Comptes Rendus Geosciences 347, 284–293.
Kraemer, D., Junge, M. Oberthuer, T., and Bau, M., 2015. Improving recoveries of platinum and palladium from oxidized platinum-group element ores of the Great Dyke, Zimbabwe, using the biogenic siderophore desferrioxamine B. Hydrometallurgy 152, 169–177.
Göb, S., Bau, M., and Markl, G., 2015. Chemical composition of waters in a former Cu-As mine: water–rock interaction, REE systematics and stability of secondary copper minerals. N. Jb. Miner. Abh. (J. Min. Geochem.) 192/1, 11–32.
Bau, M., Schmidt, K., Koschinsky, A., Hein, J., Kuhn, T., and Usui, A.,2014. Discriminating between different genetic types of marine ferro-manganese crusts and nodules based on rare earth elements and yttrium. Chemical Geology 381, 1–9.
Schmidt, K., Bau, M., Hein, J.R., and Koschinsky, A., 2014. Fractionation of the geochemical twins Zr–Hf and Nb–Ta during scavenging from seawater by hydrogenetic ferromanganese crusts. Geochim. Cosmochim. Acta 140, 468–487.
Tepe, N. and Bau, M., 2014. Importance of nanoparticles and colloids from volcanic ash for riverine transport of trace elements to the ocean: Evidence from glacial-fed rivers after the 2010 eruption of Eyjafjallajökull Volcano, Iceland. Science of The Total Environment 488/489, 243-251.
Tepe, N., Romero, M., and Bau, M., 2014. High-technology metals as emerging contaminants: Strong increase of anthropogenic gadolinium levels in tap water of Berlin, Germany, from 2009 to 2012. Applied Geochemistry 45, 191–197.
Schirmer, T., Koschinsky, A., and Bau, M., 2014. The ratio of tellurium and selenium in geological material as a possible paleo-redox proxy. Chemical Geology 376, 44-51.
Viehmann, S., Hoffmann, J.E., Münker, C., and Bau, M., 2014. Decoupled Hf-Nd isotopes in Neoarchean seawater reveal weathering of emerged continents. Geology 42, 115-118.
Crowe, S.A., Døssing, L.N., Beukes, N.J., Bau, M., Kruger, S.J., Frei, R., and Canfield, D.E., 2013. Atmospheric oxygenation 3 billion years ago. Nature 501, 535-538.
Bau, M., Tepe, N., and Mohwinkel, D., 2013. Siderophore-promoted transfer of rare earth elements and iron from volcanic ash into glacial meltwater, river and ocean water. Earth Planet. Sci. Lett. 364, 30–36.
Kulaksız, S. and Bau, M., 2013. Anthropogenic dissolved and colloid/nanoparticle-bound samarium, lanthanum and gadolinium in the Rhine River and the impending destruction of the natural rare earth element distribution in rivers. Earth Planet. Sci. Lett. 362, 43–50.
Göb, S., Loges, A., Nolde, N., Bau, M., Jacob, D.E., and Markl, G., 2013. Major and trace element compositions (including REE) of mineral, thermal, mine and surface waters in SW Germany and implications for water–rock interaction. Applied Geochem. 33, 127–152.
Göb, S., Gühring, J.-E., Bau, M., and Markl, G., 2013. Remobilization of U and REE and the formation of secondary minerals in oxidized U deposits. American Mineralogist 98, 530-548.
Piper, D.Z. and Bau, M., 2013. Normalized Rare Earth Elements in Water, Sediments, and Wine: Identifying Sources and Environmental Redox Conditions. American Journal of Analytical Chemistry, 2013, 4, 69-83.
Bau, M. 2012. Der Urquell des Lebens. MINT Zirkel, vol. 1/3+4, 1-2.
Loges, A., Wagner, T., Barth, M., Bau, M., Göb, S., and Markl, G. 2012. Negative Ce anomalies in Mn oxides: The role of Ce4+ mobility during water–mineral interaction. Geochimica Cosmochimica Acta, 86, 296-317.
Loges, A., Wagner, T., Kirnbauer, T., Göb, S., Bau, M., Berner, Z., and Markl, G. 2012. Source and origin of active and fossil thermal spring systems, northern Upper Rhine Graben, Germany. Applied Geochem., 27, 1153-1169.
Göb, S., Wenzel, T., Bau, M., Jacob, D.E., Loges, A., and Markl, G., 2011. The redistribution of rare-earth elements in secondary minerals of hydrothermal veins, Schwarzwald, southwestern Germany. Canadian Mineralogist, 49, 1305-1333.
Kulaksiz, S. and Bau, M., 2011. Anthropogenic gadolinium as a microcontaminant in tap water used as drinking water in urban areas and megacities. Applied Geochem., 26, 1877-1885.
Kulaksiz, S, and Bau, M., 2011. Rare earth elements in the Rhine River, Germany: First case of anthropogenic lanthanum as a dissolved microcontaminant in the hydrosphere. Environment International, 37, 973–979.
Bau, M., Balan, S., Schmidt, K., and Koschinsky, A., 2010. Rare earth elements in mussel shells of the Mytilidae family as tracers for hidden and fossil high-temperature hydrothermal systems. Earth and Planet. Sci. Lett. 299, 310–316.
Koschinsky, A., Bau, M., Marbler, H., and Schmidt, K., 2010. Rare valuable metals in marine ferromanganese nodules – contents and accumulation processes. Zeitschrift für Angew. Geologie, 51, 33-39.
Schmidt, K., Garbe-Schönberg, D., Bau, M. and Koschinsky,A., 2010. Rare earth element distribution in >400°C hot hydrothermal fluids from 5°S, MAR: The role of anhydrite in controlling highly variable distribution patterns. Geochim. Cosmochim. Acta, 74, 4058-4077.
Bau, M. and Alexander, B.W., 2009. Distribution of high field strength elements (Y, Zr, REE, Hf, Ta, Th, U) in adjacent magnetite and chert bands and in reference standards FeR-3 and FeR-4 from the Temagami iron-formation, Canada, and the redox level of the Neoarchean ocean. Precambrian Research, 174, 337-346.
Münker, C., Bau, M., Langenhorst, F., Palme, H., Spohn, T., Stöffler, D., 2009. Planetenentstehung und die Entwicklung der frühen Erde. Terra Nostra, 2009/2, 9-16.
Bau, M. 2009 Die Frühgeschichte des Planeten Erde: Ein Beispiel für interdisziplinäre gesellschaftsrelevante Forschung im Bereich der Geowissenschaften. Terra Nostra, 2009/2, 24-26.
Kulaksiz, S. and Bau, M., 2009. Anthropogenic Gadolinium as a micropollutant in drinking water. In: Lentz, D.R. et al. (eds.), Proceed. 24th Intern. Appl. Geochem. Symp. Frederictown, New Brunswick, Canada, Vol. 2, p. 747-750.
Alexander, B.W., Bau M., and Andersson, P., 2009. Neodymium isotopes in Archean seawater and implications for the marine Nd cycle in Earth's early oceans. Earth Planet. Sci. Lett. 283, 144-155.
Bau, M., and Koschinsky, A., 2009. Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare earth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts. Geochemical Journal, 43, pp. 37-47.
Alexander, B. W., Bau, M., Andersson, P., and Dulski, P., 2008. Continentally-derived solutes in shallow Archean seawater: Rare earth element and Nd isotope evidence in iron formation from the 2.9 Ga Pongola Supergroup, South Africa. Geochim. Cosmochim. Acta 72, 378-394.
de Carvalho, L.M., do Nascimento, P.C., Koschinsky, A., Bau, M., Stefanello, R.F., Spengler, C., Bohrer, D., and Jost, C., 2007. Simultaneous Determination of Cadmium, Lead, Copper, and Thallium in Highly Saline Samples by Anodic Stripping Voltammetry (ASV) Using Mercury-Film and Bismuth-Film Electrodes (p NA). Electroanalysis.
Kulaksiz, S. and Bau, M., 2007. Contrasting behaviour of anthropogenic gadolinium and natural rare earth elements in estuaries and the gadolinium input into the North Sea. Earth Planet. Sci. Lett., 260, 361-371.
Bau, M. and Alexander, B., 2006. Preservation of primary REE patterns without Ce anomaly during dolomitization of Mid-Paleoproterozoic limestone and the potential re-establishment of marine anoxia immediately after the “Great Oxidation Event”. S. Afr. J. Geol., 109, 81-86.
Bau, M., Knappe, A., and Dulski, P., 2006. Anthropogenic gadolinium as a micropollutant in river waters in Pennsylvania and in Lake Erie, northeastern United States. Chem. Erde – Geochemistry, 66, 143-152.
Bau, M. and Koschinsky, A., 2006. Hafnium and neodymium isotopes in seawater and ferromanganese crusts: the "element perspective”. Earth Planet. Sci. Lett. 241, 952-961.
Bau, M., Alexander, B., Chesley, J.T., Dulski, P., and Brantley, S.L., 2004.Mineral dissolution in the Cape Cod aquifer, Massachusetts, USA: I. Reaction stoichiometry and impact of accessory feldspar and glauconite on strontium isotopes, solute concentrations, and REY distribution. Geochim. Cosmochim. Acta, 68, 1199-1216.
Koschinsky, A., Hein, J., and Bau, M., 2004. The importance of surface oxidation for the enrichment of Te and Se on Mn oxides and Fe oxyhydroxide. In: R.B. Wanty and R.R. Seal (Eds.), Water-Rock Interaction, Vol. 2. Balkema Publ., Leiden, pp. 1323-1326.
Bau, M., Romer, R., Lüders, V., and Dulski, P., 2003. Tracing element sources of hydrothermal mineral deposits: REE and Y distribution and Sr-Nd-Pb isotopes in fluorite from MVT deposits in the Pennine Orefield, England. Mineralium Deposita, 38, 992-1008.
Koschinsky, A., Seifert, R., Halbach, P., Bau, M., Brasse, S., de Carvalho, L.M., and Fonseca, N.M., 2002. Geochemistry of diffuse low-temperature hydrothermal fluids in the North Fidji Basin. Geochim. Cosmochim. Acta, 66, 1409-1427.
Brantley, S.L., Bau, M., Yau, S., Alexander, B., and Chesley, J., 2001. Interpreting kinetics of groundwater-mineral interaction using major element, trace element, and isotopic tracers. in: Cidu, R. (ed.), Water-Rock Interaction 10, Proceed. 10th Int. Symp. Water-Rock Interaction, Balkema, Lisse, pp. 13-18.
Brantley, S.L., Liermann, L., Bau, M., and Wu, S., 2001. Uptake of trace metals and rare earth elements from hornblende by a soil bacterium. Geomicrobiology J., 18: 37-61.
Hein, J.R., Koschinsky, A. Bau, M., Manheim, F.T., Kang, J.-K., and Roberts, L., 2000. Cobalt-rich ferromanganese crusts in the Pacific. in: D.S. Cronman (ed.), Handbook of Marine Mineral Deposits, CRC Press, Boca Raton, pp. 239-279.
Knappe, A., Sommer-von-Jarmersted, C., Bau, M., and Dulski, P., 2000. Gadolinium als Umwelttracer. in: Gesellschaft für UmweltGeowissenschaften (ed.), Umweltgeochemie in Wasser, Boden und Luft, Springer, Berlin, pp. 97-113.
Möller, P., Dulski, P., Bau, M., Knappe, A., Pekdeger, A., and Sommer-von Jarmersted, C., 2000. Anthropogenic gadolinium as a conservative tracer in hydrology. J. Geochem. Expl., 69-70: 409-414.
Bau, M., Romer, R., Lüders, V., and Beukes, N.J., 1999. Pb, O, and C isotopes in silicified Mooidraai dolomite (Transvaal Supergroup, South Africa): Implications for the composition of Paleoproterozoic seawater and dating the increase of oxygen in the Precambrian atmosphere. Earth Planet. Sci. Lett. 174: 43-57.
Bau, M., 1999. Scavenging of dissolved yttrium and rare earths by precipitating iron oxyhydroxide: Experimental evidence for Ce oxidation, Y-Ho fractionation, and lanthanide tetrad effect. Geochim. Cosmochim. Acta, 63: 67-77.
Bau, M. and Dulski, P., 1999. Comparing yttrium and rare earths in hydrothermal fluids from the Mid-Atlantic Ridge: implications for Y and REE behaviour during near-vent mixing and for the Y/Ho ratio of Proterozoic seawater. Chem. Geol., 155: 77-90.
Bau, M., Usui, A., Pracejus, B., Mita, N., Kanai, Y., Irber, W., and Dulski, P., 1998. Geochemistry of low-temperature water-rock interaction: evidence from natural waters, andesite, and iron-oxyhydroxide precipitates at Nishiki-numa iron-spring, Hokkaido, Japan. Chem. Geol., 151: 293-307.
Janssen, C., Laube, N., Bau, M., and Gray, D.R., 1998. Fluid regime in faulting deformation of the Karatah Fault zone, Australia, as inferred from major and minor element analyses and stable isotope signatures. Tectonophysics, 294: 109-130.
Kuhn, T., Bau, M., Blum, N., and Halbach, P., 1998. Origin of negative Ce anomalies in mixed hydrothermal-hydrogenetic Fe-Mn crusts from the Central Indian Ridge. Earth Planet. Sci. Lett., 163: 207-220.
Möller, P., Bau, M., Dulski, P., and Lüders, V, 1998. REE and yttrium fractionation in fluorite and their bearing on fluorite formation. Proceed. Quadr. IAGOD Symp., vol. 9, pp. 575-592.
Bau, M., 1997. The lanthanide tetrad effect in highly evolved felsic igneous rocks - a reply to a comment by Y. Pan. Contrib. Mineral. Petrol., 128: 409-412.
Bau, M., Höhndorf, A., Dulski, P., and Beukes, N.J., 1997. Sources of rare-earth elements and iron in Paleoproterozoic iron-formations from the Transvaal Supergroup, South Africa: Evidence from neodymium isotopes. J. Geol., 105: 121-129.
Bau, M., Möller, P., and Dulski, P., 1997. Yttrium and lanthanides in eastern Mediterranean seawater and their fractionation during redox-cycling. Mar. Chem., 56: 123-131.
Bankwitz, P. and Bau, M., 1997. Aufbau und Genese der Magnetitlagerstätte Schwarze Crux bei Schmiedefeld am Rennsteig (Zone von Vesser, Thüringer Wald): Teil einer überregiona-len geomagnetischen Anomalie in Mitteleuropa. Z. geol. Wiss., 25: 341-362.
Bankwitz, P., Bau, M., Seltmann, R., Bankwitz E., and Hoernes, S., 1997. Magnetite ore bearing belts of Proterozoic and lower Palaeozoic age in Europe - Comparison between the Vesser arc (Germany) and the Bergslagen province (Sweden): A discussion. Papunen (ed.), Mineral Deposits, Balkema, Rotterdam, 801-804.
Hein, J. R., Koschinsky, A., Halbach, P., Manheim, F.T., Bau, M., Kang, J.-K., and Lubick, N., 1997. Iron and manganese oxide mineralization in the Pacific. In: Nicholson, K., Hein, J.R., Bühn, B., and Dasgupta, S. (eds.), Manganese Mineralization: Geochemi-stry and Mineralogy of Terrestrial and Marine Deposits. Geological Society of London Special Publication, 119: 123-138.
Janssen, C., Michel, G.W., Bau, M., Lüders, V. and Mühle, K., 1997. The internal structure of the North Anatolian Fault Zone and the role of fluids for seismogenic deformation. J. Geol., 105: 387-403.
Knittel U., Hegner, E., Bau, M., and Satir, M., 1997. Enrichment processes in the sub-arc mantle: A Sr-Nd-Pb isotopic and REE study of primitive arc basalts from the Philippines. Can. Mineral., 35: 327-347.
Koschinsky, A., Stascheit, A., Bau, M., and Halbach, P., 1997. Effects of phospha-ti-za-tion on the geochemical and mineralogical composition of marine ferromanganese crusts. Geo-chim. Cosmochim. Acta, 61: 4079-4094.
Nath, B.N., Bau, M., Rao, B.R., and Rao, C.M., 1997. Trace and rare-earth elemental variation in the Arabian Sea sediments through a transect across the oxygen minimum zone. Geochim. Cosmo-chim. Acta, 61: 2375-2388.
Usui, A., Bau, M., and Yamazaki, T., 1997. Manganese microchimneys buried in the Central Pacific pelagic sedi-ments: evidence for intraplate water circulation? Mar. Geol., 141: 269-285.
Bau, M., 1996. Controls on the fractionation of isovalent trace elements in magmatic and aqueous systems: Evidence from Y/Ho, Zr/Hf, and lanthanide tetrad effect. Contrib. Mineral. Petrol., 123: 323-333.
Bau, M. and Dulski, P., 1996. Anthropogenic origin of positive gadolinium anomalies in river waters. Earth Planet. Sci. Lett., 143: 245-255.
Bau, M. and Dulski, P., 1996. Distribution of yttrium and rare-earth elements in the Penge and Kuruman Iron-Formations, Transvaal Supergroup, South Africa. Precambrian Res., 79: 37-55.
Bau, M., Koschinsky, A., Dulski, P., and Hein, J.R., 1996. Comparison of the partitioning behaviours of yttrium, rare-earth elements, and titanium between hydrogenetic marine ferromanganese crusts and seawater. Geochim.Cosmochim. Acta, 60: 1709-1725.
Bau, M. and Dulski, P., 1995. Comparative study of yttrium and rare-earth element behaviours in fluorine-rich hydrothermal fluids. Contrib. Mineral. Petrol., 119: 213-223.
Bau, M., Dulski, P., and Möller, P., 1995. Yttrium and holmium in South Pacific seawater: Vertical distribution and possible fractionation mechanisms. Chem. d. Erde, 55: 1-15.
Cotten, J., Le Dez, A., Bau, M., Caroff, M., Maury, R.C., Dulski, P., Fourcade, S., Bohn, M., and Brousse, R., 1995. Origin of anomalous rare-earth element and yttrium enrichments in subaerially exposed basalts: Evidence from French Polynesia. Chem. Geol., 119: 115-138.
Bau, M., 1994. Comment on "Modeling of rare-earth element partitioning between particles and solution in aquatic environments" by Y. Erel and E.M. Stolper. Geochim. Cosmochim. Acta, .20: 4521-4523.
Bau, M. and Dulski, P., 1994. Evolution of the yttrium-holmium systematics of seawater through time. Mineral. Mag., 58A: 61-62.
Bau, M. and Möller, P., 1994. Präkambrische chemisch-sedimentäre Mineralisationen: Spiegel der Evolution von Litho-, Hydro- und Atmosphäre. Geowissenschaften, 10/11: 333-336.

Giese, U. and Bau, M., 1994. Trace element accessibility in mid-ocean ridge and ocean island basalt: an experimental approach. Mineral. Mag., 58A: 329-330.

Möller, P., Dulski, P., and Bau, M., 1994. Rare-earth element adsorption in a seawater profile above the East Pacific Rise. Chem. d. Erde, 54: 129-149.
Bau, M., 1993. Effects of syn- and post-depositional processes on the rare-earth element distribution in Precambrian iron-formations. Eur. J. Min., 5: 257-267.
Bau, M. and Knittel, U., 1993. Significance of slab-derived partial melts and aqueous fluids for the genesis of tholeiitic and calc-alkaline island-arc basalts: Evidence from Mt. Arayat, Philippines. Chem. Geol., 105: 233-251.
Bau, M. and Möller, P., 1993. Rare earth element systematics of the chemically precipitated component in Early Precambrian iron formations and the evolution of the terrestrial atmo-sphere-hydrosphere-lithosphere system. Geochim. Cosmochim. Acta, 57: 2239-2249.
Möller, P. and Bau, M., 1993. Rare-earth patterns with positive cerium anomaly in alkaline waters from Lake Van, Turkey. Earth Planet. Sci. Lett., 117: 671-676.
Bau, M. and P. Dulski, 1992. Small-scale variations of the rare-earth element distribution in Precambrian iron-formations. Eur. J. Min., 4: 1429-1433.
Bau, M. and Möller, P., 1992. Rare-earth element fractionation in metamorphogenic hydrothermal calcite, magnesite and siderite. Mineralogy Petrology., 45: 231-246.
Bau, M., 1991. Lanthaniden-Fraktionierung in niedrig- und hochthermalen Lösungen und ihre Bedeutung für die Interpretation früh-präkambrischer chemischer Eisensedimente. Dissertation, Hahn-Meitner-Institut Berlin / Freie Universität Berlin, 305 p.
Bau, M., 1991. Rare earth element mobility during hydrothermal and metamorphic fluid-rock interaction and the significance of the oxidation state of europium. Chem. Geol., 93: 219-230.
Bau, M. and Möller, P., 1991. REE systematics as source of information on minerogenesis. In: Pagel, M. and Leroy, J.L. (eds.), Source, Transport and Deposition of Metals, Balkema, Rotterdam, 17-20.


Other Professional Activities
  • Elected Councillor of the European Association of Geochemistry
  • Invited member of the "Fachkollegium Lagerstättenlehre", Germany
  • Member of European Association of Geochemistry, Deutsche Mineralogische Gesellschaft, Geologische Vereinigung